--- title: Lob API Integration on Truto slug: lob category: Marketing Automation canonical: "https://truto.one/integrations/detail/lob/" --- # Lob API Integration on Truto **Category:** Marketing Automation **Status:** Generally available ## MCP-ready AI tools Truto exposes 104 tools for Lob that AI agents can call directly. - **get_single_lob_postcard_by_id** — Get a specific Lob postcard by id. Returns the full postcard object including id, to and from address details, carrier, url, tracking_events, thumbnails, send_date, and expected_delivery_date. Required: id. - **delete_a_lob_postcard_by_id** — Cancel a scheduled Lob postcard and remove it from production. Can only be done before the send_date has passed. Returns: id. Scheduling and cancellation is a premium feature. Required: id. - **list_all_lob_postcards** — List Lob postcards ordered by creation date with the most recently created appearing first. Returns each postcard with id, to, from, url, carrier, front_template_id, back_template_id, size, mail_type, date_created, date_modified, send_date, expected_delivery_date, use_type, and object. - **create_a_lob_postcard** — Create a new Lob postcard with front and back artwork, recipient and sender addresses, and optional merge variables, QR codes, and scheduling. Returns the created postcard object including id, to, from, url, carrier, front_template_id, back_template_id, size, mail_type, date_created, date_modified, send_date, expected_delivery_date, use_type, and object. Required: to, front, back, use_type. - **get_single_lob_letter_by_id** — Retrieve a single Lob letter by id. Returns the full letter object including id, to and from addresses, url, carrier, color, double_sided, address_placement, extra_service, return_envelope, perforated_page, cards, buckslips, tracking_number, tracking_events, thumbnails, expected_delivery_date, send_date, date_created, and status. Required: id. - **delete_a_lob_letter_by_id** — Cancel a Lob letter and remove it from production. Can only be done before the send_date has passed. Returns: id, deleted. Scheduling and cancellation is a premium feature. Required: id. - **list_all_lob_letters** — List Lob letters sorted by creation date, most recently created first. Returns each letter with its id, description, to/from address objects, url, carrier, color, double_sided, mail_type, send_date, expected_delivery_date, date_created, tracking_number, thumbnails, and status. Optional filters include color, scheduled, mail_type, send_date, date_created, metadata, campaign_id, status, and sort_by. - **create_a_lob_letter** — Create a new Lob letter from an HTML string, a PDF URL, or an existing template id, with recipient and sender addresses and optional merge variables, return envelope, cards, and scheduling. Returns the created letter object including id, to, from, url, carrier, color, double_sided, address_placement, expected_delivery_date, date_created, and status. Required: to, from, file, color, use_type. - **get_single_lob_self_mailer_by_id** — Retrieve a single Lob self mailer by id. Returns the full self mailer object including id, description, to/from addresses, carrier, tracking events, thumbnails, size, mail type, expected delivery date, and send date. Required: id. - **delete_a_lob_self_mailer_by_id** — Cancel a Lob self mailer and remove it from production before its send_date has passed. Returns: id, deleted, object. Exclusive to certain Print & Mail Edition customers. Required: id. - **list_all_lob_self_mailers** — List Lob self mailers sorted by creation date, most recent first. Returns each self mailer with its id, description, to/from address objects, size, mail_type, carrier, expected_delivery_date, date_created, send_date, and thumbnails. Optional filters include size, mail_type, scheduled, send_date, date_created, metadata, campaign_id, and status. - **create_a_lob_self_mailer** — Create a new Lob self mailer with inside and outside artwork, recipient and sender addresses, and optional merge variables. Returns the created self mailer object including id, url, carrier, tracking_events, thumbnails, expected_delivery_date, date_created, and date_modified. Required: to, inside, outside, use_type. - **list_all_lob_addresses** — List Lob addresses sorted by creation date, with the most recently created appearing first. Returns: id, description, name, company, phone, email, address_line1, address_line2, address_city, address_state, address_zip, address_country, metadata, date_created, date_modified, object, recipient_moved. - **create_a_lob_address** — Create a new address in Lob. Returns the created address object including id, description, name, company, phone, email, address_line1, address_line2, address_city, address_state, address_zip, address_country, metadata, date_created, date_modified, object, and recipient_moved. - **get_single_lob_address_by_id** — Retrieve. Required: id. - **delete_a_lob_address_by_id** — Delete an existing Lob address by id. Returns: id. Required: id. - **lob_bank_accounts_verify** — Verify a Lob bank account via microdeposits to enable check creation. Submit amounts (two deposit amounts in cents) or descriptor_code (a 6-character SM-prefixed code) depending on the account's microdeposit_type; submitting the wrong parameter type returns an error. Returns: id, description, routing_number, account_number, signatory, account_type, metadata. Required: bank_id. - **get_single_lob_bank_account_by_id** — Get a Lob bank account by id. Returns: id, description. Required: id. - **delete_a_lob_bank_account_by_id** — Permanently delete a Lob bank account by id. This action cannot be undone. Returns: id. Required: id. - **list_all_lob_bank_accounts** — List Lob bank accounts sorted by creation date with the most recently created first. Returns: id, description, routing_number, account_number, signatory, account_type, metadata. - **create_a_lob_bank_account** — Create a new Lob bank account. Live-mode accounts must be verified via micro deposits before sending checks. Returns: id, description, routing_number, account_number, signatory, account_type, metadata. Required: routing_number, account_number, account_type, signatory. - **get_single_lob_billing_group_by_id** — Get a Lob billing group by id. Returns: id, description, object. Required: id. - **update_a_lob_billing_group_by_id** — Update editable attributes of a Lob billing group by id. Returns: id, name, description, date_created, date_modified, object. Required: id. - **list_all_lob_billing_groups** — List Lob billing groups sorted by creation date with the most recently created appearing first. Returns: id, name, description, date_created, date_modified, object. When using sort_by, specify either date_created or date_modified, not both. - **create_a_lob_billing_group** — Create a new billing group in Lob with a name and optional description. Returns: id, name, description, date_created, date_modified, object. Required: name. - **get_single_lob_booklet_by_id** — Get a Lob booklet by id. Returns the booklet object including id, description, to, from, mail_type, size, send_date, url, carrier, tracking_events, thumbnails, expected_delivery_date, date_created, date_modified, and object. Required: id. - **delete_a_lob_booklet_by_id** — Delete a Lob booklet by id, completely removing it from production. Can only be done before the booklet's send_date has passed; successfully canceled booklets are not charged. Returns the deleted booklet including id, description, to, from, mail_type, size, date_created, and date_modified. Required: id. - **list_all_lob_booklets** — List Lob booklets sorted by creation date (most recent first). Returns each booklet's id, description, to, from, mail_type, size, send_date, date_created, date_modified, and qr_code. Optional filters: include, date_created, metadata, send_date, mail_type, sort_by, campaign_id, status. - **create_a_lob_booklet** — Create a new Lob booklet for print and mail. Returns the created booklet object including id, description, to, from, mail_type, size, send_date, date_created, and date_modified. Required: to, from, file, use_type, size, pages. - **list_all_lob_buckslips** — List Lob buckslips sorted by creation date with the most recently created appearing first. Returns: id, account_id, description, auto_reorder, reorder_quantity, url, raw_url, front_original_url, back_original_url, thumbnails, available_quantity, pending_quantity, countries, status, mode, threshold_amount, date_created, date_modified, deleted, object. - **create_a_lob_buckslip** — Create a new Lob buckslip with front and back artwork PDFs. Returns: id, description, auto_reorder, url, object. Required: front. - **get_single_lob_buckslip_by_id** — Get a single Lob buckslip by id. Returns: id, description, url, object. Required: id. - **update_a_lob_buckslip_by_id** — Update the details of an existing Lob buckslip such as description and auto_reorder settings. Returns: id, description, auto_reorder, url, object. Required: id. - **delete_a_lob_buckslip_by_id** — Delete an existing Lob buckslip by id. Returns the deleted buckslip object including id, deleted, date_created, date_modified, and object. Required: id. - **list_all_lob_buckslip_orders** — List buckslip orders associated with a specific buckslip in Lob. Returns: id, quantity, date_created, date_modified, object. Required: buckslip_id. - **create_a_lob_buckslip_order** — Create a new buckslip order in Lob by specifying the print quantity. Returns: id, quantity, date_created, date_modified, object. Required: buckslip_id, quantity. - **create_a_lob_bulk_us_verification** — Verify a list of US or US territory addresses in bulk with Lob. Returns: addresses. Required: addresses. - **create_a_lob_bulk_intl_verification** — Bulk verify a list of international (non-US) addresses with a live Lob API key. Returns an array of verification results including id, recipient, primary_line, deliverable, and country for each address. Test API keys return dummy responses based on the primary line input. Required: addresses. - **list_all_lob_campaigns** — List Lob campaigns sorted by creation date, with the most recently created campaigns appearing first. Returns: id, name, description, schedule_type, print_speed, send_date, metadata, date_created, date_modified, is_deleted, object. - **create_a_lob_campaign** — Create a new Lob campaign with the provided properties. Returns the created campaign object including id, name, description, schedule_type, and print_speed. Required: name, schedule_type, use_type. - **get_single_lob_campaign_by_id** — Get a single Lob campaign by id. Returns the campaign object including its id, name, description, schedule_type, print_speed, send_date, and date_created. Required: id. - **update_a_lob_campaign_by_id** — Update the details of an existing Lob campaign by id. Returns the updated campaign object including id, name, description, schedule_type, and print_speed. Required: id. - **delete_a_lob_campaign_by_id** — Delete an existing Lob campaign by id. Deleting a campaign also deletes any associated mail pieces that have been created but not sent. Returns the deleted campaign object including id, name, description, schedule_type, and print_speed. Required: id. - **lob_campaigns_send** — Send a Lob campaign by supplying the unique campaign identifier returned upon campaign creation. Returns the campaign object including id, name, description, schedule_type, and print_speed. Required: cmp_id. - **list_all_lob_cards** — List Lob cards sorted by creation date, most recently created first. Returns: id, account_id, description, url, size, auto_reorder, reorder_quantity, raw_url, front_original_url, back_original_url, thumbnails, available_quantity, pending_quantity, countries, status, mode, orientation, threshold_amount, date_created, date_modified, object. The include parameter can request additional metadata such… - **create_a_lob_card** — Create a new Lob card with front and back artwork and a specified size. Returns: id, description, url, size, auto_reorder, object. Required: front. - **get_single_lob_card_by_id** — Get a single Lob card by id. Returns: id, description, url, object. Required: id. - **update_a_lob_card_by_id** — Update an existing Lob card's description and auto_reorder settings. Returns: id, description, url, size, auto_reorder, object. Required: id. - **delete_a_lob_card_by_id** — Delete an existing Lob card by id. Returns: id, object. Required: id. - **list_all_lob_card_orders** — List card orders associated with a specific Lob card. Returns: id, card_id, quantity, date_created, date_modified, object. Required: card_id. - **create_a_lob_card_order** — Create a new card order for a specific Lob card. Returns: id, quantity, object. Required: card_id, quantity. - **list_all_lob_checks** — List Lob checks sorted by creation date, with the most recently created checks appearing first. Returns: id, description, metadata, to, from, bank_account, amount, memo, logo, check_bottom, check_number, merge_variables, url, carrier, tracking_events, thumbnails, mail_type, print_speed, date_created, date_modified, send_date, use_type, object. Optional filters include scheduled, mail_type,… - **create_a_lob_check** — Create a new check in Lob with the provided bank account, amount, and mailing details. Returns the created check object including id, bank_account, amount, check_number, url, carrier, date_created, and object. - **get_single_lob_check_by_id** — Get a single Lob check by id. Returns the full check object including id, description, bank_account, amount, memo, check_number, mail_type, date_created, date_modified, url, to, from, and thumbnails. Required: id. - **delete_a_lob_check_by_id** — Cancel a scheduled Lob check by id, removing it from production before the send_date has passed. Returns: id, object. Can only be canceled if the check has a send_date that has not yet passed; scheduling and cancellation is a premium feature. Required: id. - **create_a_lob_creative** — Create a new creative in Lob with the provided properties. Returns the created creative object including id, campaign_id, resource_type, description, details, date_created, and date_modified. - **get_single_lob_creative_by_id** — Retrieve a single Lob creative by id. Returns the creative object including id, campaign_id, resource_type, description, details, date_created, and date_modified. Required: id. - **update_a_lob_creative_by_id** — Update the details of an existing Lob creative by id. Returns: id, campaign_id, resource_type, description, details, date_created, date_modified, object. Required: id. - **create_a_lob_identity_validation** — Validate whether a given name is associated with an address in Lob. Returns: recipient, primary_line, secondary_line, city, state, zip_code. - **list_all_lob_informed_delivery_campaigns** — List Informed Delivery campaigns in Lob. Returns: usps_campaign_id, ride_along_url, ride_along_image, quantity, start_date, status. - **create_a_lob_informed_delivery_campaign** — Create a new Informed Delivery campaign in Lob by providing the ride-along image, URL, quantity, start date, and status. Returns: usps_campaign_id, ride_along_url, ride_along_image, quantity, start_date, status. - **get_single_lob_informed_delivery_campaign_by_id** — Get a single Informed Delivery campaign in Lob by id (usps_campaign_id). Returns: usps_campaign_id, ride_along_url, ride_along_image, quantity, start_date, status. Required: id. - **update_a_lob_informed_delivery_campaign_by_id** — Update an existing Informed Delivery campaign in Lob. Only campaigns in the pending_approval status can be updated. Returns: usps_campaign_id, ride_along_url, ride_along_image, quantity, start_date, status. Required: id. - **create_a_lob_intl_verification** — Verify a single international address (excluding US and US territories) with Lob. The address may be supplied as components (primary_line, city, state, postal_code, country) or as a single-line address string, but not both. Returns: id, recipient, primary_line, secondary_line, last_line, country, deliverable, components, object. - **list_all_lob_qr_code_analytics** — List QR code analytics in Lob, sorted by scan date with the most recently scanned QR codes appearing first. Returns: id, resource_id, date_created, date_modified, object. Results can be filtered by scan status or resource IDs. - **get_single_lob_domain_by_id** — Get a single Lob domain by id. Returns the domain object including id, domain, and status. Required: id. - **delete_a_lob_domain_by_id** — Delete a registered Lob domain by id. This operation can only be performed if all associated links with the domain have been deleted. Returns the deleted domain object including id and domain. Required: id. - **list_all_lob_domains** — List all Lob domains, optionally filtered by configuration status. Returns each domain with id, domain, date_created, date_modified, deleted, and status. - **create_a_lob_domain** — Create a new custom domain in Lob for generating custom short links. Returns the created domain object including id, domain, and status. Required: domain. - **get_single_lob_link_by_id** — Get a single Lob shortened link by id. Returns: id, title, domain_id, redirect_link, short_link, metadata, created_at, updated_at, slug, domain, resource_id, dateCreated, dateModified, deleted. Required: id. - **update_a_lob_link_by_id** — Update properties of a shortened Lob link by id. Returns: id, title, domain_id, redirect_link, short_link, metadata, created_at, updated_at, slug, domain, resource_id, dateCreated, dateModified, deleted. Required: id, redirect_link. - **delete_a_lob_link_by_id** — Delete a shortened Lob link by id. Returns: id, deleted, redirect_link, slug, domain, resource_id, dateCreated, dateModified. Required: id. - **list_all_lob_links** — List all Lob shortened links sorted by creation date, most recent first. Returns: id, title, domain_id, redirect_link, short_link, metadata, created_at, updated_at, slug, domain, resource_id, dateCreated, dateModified, deleted. Optional filters: campaign_id, domain_id. - **create_a_lob_link** — Create a shortened Lob link from a long URL, optionally with a custom domain or slug. Returns: id, title, domain_id, redirect_link, short_link, metadata, created_at, updated_at, slug, domain, resource_id, dateCreated, dateModified, deleted. Required: redirect_link. - **get_single_lob_resource_proof_by_id** — Get a Lob resource proof by id. Returns: id, object. Required: id. - **update_a_lob_resource_proof_by_id** — Update a Lob resource proof by id. Returns: id, resource_type, resource_parameters, template_id, object. Required: id. - **create_a_lob_resource_proof** — Create a new Lob resource proof with the provided resource type and parameters. Returns: id, resource_type, resource_parameters, template_id, object. - **get_single_lob_snap_pack_by_id** — Retrieve a single Lob snap pack by id. Returns the full snap pack object including id, to and from addresses, url, carrier, size, color, inside_template_id, outside_template_id, thumbnails, tracking_events, expected_delivery_date, send_date, date_created, and status. Required: id. - **delete_a_lob_snap_pack_by_id** — Cancel a Lob snap pack and remove it from production. Can only be done before the send_date has passed. Returns: id, deleted. Required: id. - **list_all_lob_snap_packs** — List Lob snap packs sorted by creation date, most recently created first. Returns each snap pack with its id, description, to/from address objects, size, mail_type, carrier, url, thumbnails, send_date, expected_delivery_date, date_created, and status. Optional filters include mail_type, send_date, date_created, metadata, campaign_id, status, and sort_by. - **create_a_lob_snap_pack** — Create a new Lob snap pack with inside and outside artwork, recipient and sender addresses, and optional merge variables and scheduling. Returns the created snap pack object including id, to, from, url, carrier, size, inside_template_id, outside_template_id, expected_delivery_date, date_created, and status. Required: to, inside, outside, use_type. - **list_all_lob_template_versions** — List Lob template versions for a given template, sorted by creation date with the most recently created appearing first. Returns: id, description, html, engine, date_created, date_modified, date_deleted, object. Required: tmpl_id. - **update_a_lob_template_version_by_id** — Update a Lob template version's description and/or HTML by template and version id. Returns the updated template version including id, description, html, engine, date_created, date_modified, and object. Required: id, tmpl_id. - **delete_a_lob_template_version_by_id** — Delete a template version in Lob. Returns: id, deleted, object. A template's published_version cannot be deleted. Required: id, tmpl_id. - **create_a_lob_template_version** — Create a new template version attached to a specific Lob template. Returns: id, description, html, date_created, date_modified, object. Required: tmpl_id, html. - **get_single_lob_template_version_by_id** — Get a single Lob template version by its template id and version id. Returns: id, description, html, date_created, date_modified, object. Required: id, tmpl_id. - **get_single_lob_template_by_id** — Get a single Lob template by id. Returns the full template object including id, description, published_version, versions, metadata, html, engine, date_created, and date_modified. Required: id. - **update_a_lob_template_by_id** — Update a Lob template's description and/or published version by id. To update the template's html, create a new version. Returns the updated template object including id, description, published_version, versions, metadata, html, engine, date_created, and date_modified. Required: id. - **delete_a_lob_template_by_id** — Permanently delete a Lob template by id. Deleting a template also deletes its associated versions. Returns: id. Required: id. - **list_all_lob_templates** — List Lob templates sorted by creation date, with the most recently created first. Returns: id, description, published_version, versions, metadata, html, engine, date_created, date_modified. - **create_a_lob_template** — Create a new Lob template for use with the Print & Mail API. Returns the created template object including id, description, published_version, versions, metadata, html, engine, date_created, and date_modified. In Live mode, creating templates past your Print & Mail Edition limit returns a 403 error. Required: html. - **list_all_lob_uploads** — List Lob uploads, optionally filtered by campaign. Returns each upload's id, dateCreated, dateModified, deleted, s3Url, state, type, uploadId. - **create_a_lob_upload** — Create a new upload in Lob to import an audience file for a campaign. Returns: id, dateCreated, dateModified, deleted, s3Url, state, type, uploadId. Required: campaignId. - **get_single_lob_upload_by_id** — Get a single Lob upload by its unique upload identifier. Returns: id, dateCreated, dateModified, deleted, s3Url, state, type, uploadId. Required: id. - **update_a_lob_upload_by_id** — Update the details of an existing Lob upload, supplying only the unique identifier returned at creation and the fields to modify. Returns: id, dateCreated, dateModified, deleted, s3Url, state, type, uploadId. Required: id. - **delete_a_lob_upload_by_id** — Delete an existing upload in Lob by id. You need only supply the unique identifier that was returned upon upload creation. Returns an empty 204 response on success. Required: id. - **create_a_lob_upload_file** — Upload an audience file to Lob and associate it with an existing upload. Returns a 202 Accepted response on success indicating asynchronous processing. Required: upl_id. - **create_a_lob_upload_export** — Create an export file associated with a Lob upload to get row-by-row campaign record errors. Returns the export object including id, dateCreated, dateModified, state, s3Url, type, uploadId, and deleted. Required: upl_id. - **get_single_lob_upload_export_by_id** — Retrieve the details of an existing Lob upload export by id. Returns the export object including id, dateCreated, dateModified, state, s3Url, type, uploadId, and deleted. Required: id, upl_id. - **list_all_lob_upload_reports** — Retrieve the line item report for a Lob upload. Returns per-row CSV line item data including rowNumber, status, errorMessage, mailpieceId, and originalData. This endpoint is currently feature flagged. Required: upl_id. - **create_a_lob_us_autocompletion** — Autocomplete a partial US address in Lob and return up to 10 full address suggestions. Returns: id. Not all suggestions are valid addresses and may need separate verification. Required: address_prefix. - **create_a_lob_us_reverse_geocode_lookup** — Reverse geocode a valid US location in Lob using latitude and longitude coordinates. Returns: id, object. The optional size parameter controls the number of locations returned (1–50, defaults to 5). Required: latitude, longitude. - **create_a_lob_us_verification** — Verify a single US or US territory address in Lob. The address can be supplied as components (primary_line, city, state, zip_code) or as a single-line `address` string, but not as both. Returns: recipient, primary_line, secondary_line, urbanization, last_line. - **create_a_lob_us_zip_lookup** — Look up information about a US ZIP code in Lob. Returns the ZIP code lookup result including zip_code and associated geographic details. Required: zip_code. ## How it works 1. **Link your customer's Lob account.** Use Truto's frontend SDK; we handle every OAuth and API key flow so you don't need to create the OAuth app. 2. **Authentication is automatic.** Truto refreshes tokens, stores credentials securely, and injects them into every API request. 3. **Call Truto's API to reach Lob.** The Proxy API is a 1-to-1 mapping of the Lob API. 4. **Get a unified response format.** Every response uses a single shape, with cursor-based pagination and data in the `result` field. ## Use cases - **Add direct mail as a channel in marketing automation journeys** — CRMs and lifecycle marketing platforms can offer postcards, letters, and self-mailers as drag-and-drop nodes in customer journeys, triggered by digital events like email bounces, churn signals, or cart abandonment. - **Automate dunning and compliance mail for AR/invoicing platforms** — Billing and accounting SaaS can send physical past-due letters, invoices, and vendor checks on behalf of their customers, complete with pre-send address verification and return envelopes. - **Power geo-targeted mailers in PropTech CRMs** — Real estate and property management platforms can let agents mail 'Just Listed' or 'Just Sold' postcards to neighbors around a specific address using reverse geocode lookups and batch campaigns. - **Enable branded inserts and unboxing in e-commerce/3PL platforms** — Fulfillment and loyalty SaaS can offer per-order buckslips, coupons, and VIP mailers tailored to purchase history, printed and shipped without their customers managing a print vendor. - **Offer address validation inside SaaS forms** — Any B2B SaaS that captures customer, patient, or vendor addresses can embed US autocompletion, verification, and ZIP lookup natively to prevent bad data from ever entering the CRM. ## What you can build - **Triggered postcard and letter sends from workflow builders** — Expose postcard, letter, self-mailer, and snap pack creation as actions your users can drop into automation flows with HTML templates and merge variables. - **In-app WYSIWYG proofing with Lob thumbnails** — Render live PDF previews of mailpieces inside your product by creating template versions and pulling thumbnail proofs before the user confirms a send. - **Address autocomplete and verification widgets** — Drop autocompletion, US and international verification, and ZIP lookup into your address forms to block undeliverable addresses at point of entry. - **Batch campaign audience sync with error reporting** — Let users launch large mailings by creating campaigns, pushing audience uploads, and surfacing row-level rejections via upload exports and reports. - **Delivery tracking and QR analytics dashboards** — Poll mailpiece endpoints for tracking events and expected delivery dates, and pull QR code scan analytics to show 'In Transit', 'Delivered', and 'Scanned' states next to digital metrics. - **Automated check issuance for FinTech workflows** — Guide users through bank account creation and verification, then issue and mail checks programmatically for vendor payments, refunds, or payroll. ## FAQs ### How does authentication work when my users connect their Lob account? Lob uses API key authentication. Through Truto, your end users provide their Lob API key once during connection, and Truto securely stores and injects it into every downstream call — you never handle the credential yourself. ### Which Lob resources can I create and manage through this integration? You can create, retrieve, list, and delete postcards, letters, self-mailers, snap packs, booklets, buckslips, cards, checks, and campaigns, plus manage addresses, bank accounts, templates and template versions, creatives, links, QR codes, uploads, domains, billing groups, and informed delivery campaigns. ### Can I verify addresses before sending mail? Yes. The integration supports US autocompletion, US and international single-address verification, bulk US and international verification, US reverse geocode lookup, ZIP lookup, and identity validation, so you can validate addresses at form entry or before dispatching a campaign. ### How do I track delivery status and QR code scans? You can poll individual mailpiece endpoints (postcards, letters, checks, self-mailers, snap packs, booklets) to read tracking events and expected delivery dates, and call the QR code analytics endpoint to attribute scans back to specific mailpieces. ### Does this support batch sends and large audience uploads? Yes. You can create campaigns, attach uploads, trigger campaign sends, and generate upload exports and reports to surface per-row errors back to your users in their own UI. ### How does Truto handle Lob's rate limits and pagination? Truto abstracts Lob's pagination behind consistent list responses and manages retries and backoff against Lob's rate limits, so you can focus on product logic rather than API-specific quirks. ## Related reading - [Connect Lob to Claude: Manage Mail Campaigns & Custom Templates](https://truto.one/blog/connect-lob-to-claude-manage-mail-campaigns-custom-templates/) — Learn how to connect Lob to Claude using Truto's managed MCP server. Automate direct mail, address verification, and custom HTML templates with AI agents. - [Connect Lob to ChatGPT: Automate Direct Mail & Address Verification](https://truto.one/blog/connect-lob-to-chatgpt-automate-direct-mail-address-verification/) — Learn how to connect Lob to ChatGPT using Truto's MCP server. Automate address verification, direct mail, and physical letter workflows with AI agents. - [Connect Lob to AI Agents: Orchestrate Print Mail & Identity Checks](https://truto.one/blog/connect-lob-to-ai-agents-orchestrate-print-mail-identity-checks/) — Learn how to connect Lob to AI Agents using Truto's tools endpoint. Execute print mail workflows, identity checks, and address verifications natively in LangChain.