Integration · Marketing

Connect Claude & ChatGPT to thanks.io

Ask your AI to send a thank-you postcard to new customers, add someone to a mailing list, or check where an order is in thanks.io. It can manage mailing lists and recipients, send postcards, notecards and letters in a handwriting style, and list, track and cancel orders. Each send can be previewed before real mail goes out.

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Try asking

“Send a thank-you postcard to everyone on the New customers list.”
The AI finds the list, prepares the postcard with your message and handwriting style, and previews it before sending. Sending orders real mail and charges your account.
“Preview a notecard to recipient 5521 with the message 'Thanks for your order'.”
It builds the notecard with preview turned on, so you can check it without sending anything.
“Add Lars Nielsen, Strandvejen 12, 8000 Aarhus, Denmark to the VIP list.”
It adds the recipient to the mailing list with name and full address.

What your AI can do

Handwritten-style mail

Send postcards in 4x6, 6x9 or 6x11, notecards and letters with your message, front image and handwriting style.

Mailing lists and recipients

Create mailing lists, and add, update or remove recipients with address and custom fields.

Orders and tracking

List past and scheduled orders, track delivery, see each mail piece's status and cancel orders before printing.

“Where is order 7781?”
It reads the delivery tracking status of the order.
“Which handwriting styles can I choose from?”
It lists the available handwriting styles with their IDs.
“Cancel yesterday's letter order before it is printed.”
It finds the order and cancels it. A cancel cannot be undone.

50 tools for thanks.io

These tools are switched on when you connect. You can switch any of them off, or require your approval before it runs.

cancel_orderDeletesCancel a mail order by `order_id` before it is printed. This cannot be undone.
create_accountChanges dataCreate a new account. Required: title. API summary: Create Sub Account.
create_buy_radius_searchChanges dataCreate a new buy radius search. Required: address, postal code or record count.
create_giftcardVisible to othersCreate a new giftcard. Has effects visible outside this system. API summary: Send Giftcard.
create_giftcard_postChanges dataCreate a new giftcard. API summary: Estimate Giftcard.
create_magnacardVisible to othersCreate a new magnacard. Has effects visible outside this system. API summary: Send Magnacard.
create_magnacard_postChanges dataCreate a new magnacard. API summary: Estimate Magnacard.
create_mailing_listChanges dataCreate a mailing list with a `description` that identifies it, optionally for a sub-account.
create_messageVisible to othersCreate a new message. Has effects visible outside this system. API summary: Create Message Template.
create_notecard_postChanges dataCreate a new notecard. API summary: Estimate Notecard.
create_order_replayChanges dataCreate a new replay for a order. API summary: Replay Order.
create_postcard_postChanges dataCreate a new postcard. API summary: Estimate Postcard.
create_recipientChanges dataAdd a recipient to a mailing list: mailing_list_id, name, address, address2, city, province, postal_code, country, plus optional email, phone, company, dob, anniversary and custom1-4.
create_recipients_util_multipleChanges dataCreate a new recipients util. API summary: Create Multiple Recipients.
create_webhookDeletesCreate a new webhook. Required: url, type or verb. Destructive action; may require approval. API summary: Create Webhook.
create_windowedletterVisible to othersCreate a new windowedletter. Has effects visible outside this system. API summary: Send Windowed Letter.
create_windowedletter_postChanges dataCreate a new windowedletter. API summary: Estimate Windowed Letter.
create_windowlessletter_postChanges dataCreate a new windowlessletter. API summary: Estimate Windowless Letter.
delete_accountDeletesPermanently delete a account by account id. Destructive action; may require approval. API summary: Delete Sub Account. All sub account orders and mailing lists are moved to the main account.
delete_mailing_listDeletesPermanently delete a mailing list by mailing list id. Destructive action; may require approval. API summary: Delete Mailing List.
delete_messageDeletesPermanently delete a message by message id. Destructive action; may require approval. API summary: Delete Message Template.
delete_recipientDeletesPermanently remove a recipient by `recipient_id`.
delete_recipients_utils_by_addressDeletesPermanently delete a recipients util. Destructive action; may require approval. API summary: Delete Recipient By Address.
delete_webhookDeletesPermanently delete a webhook by webhook id. Destructive action; may require approval. API summary: Delete Webhook.
get_accountGet one account by account id. API summary: Get Details.
get_mailing_listGet one mailing list by `mailing_list_id`.
get_messageGet one message by message id. API summary: Get Message Template.
get_recipientGet one recipient by `recipient_id`, with name, address and custom fields.
list_accountsList accounts. API summary: List All.
list_giftcard_brandsList giftcard brands. API summary: List Brands.
list_giftcard_brands_listsList giftcard brands lists. API summary: List Brands Flat.
list_handwriting_stylesList the available handwriting styles and their IDs.
list_image_templatesList your saved image templates for the front of postcards and notecards.
list_image_templates_2List image templates. Optional filters: id, background url, header, subheader, redirect url or logo url. API summary: Create.
list_mailing_list_recipientsList the recipients on a mailing list by `mailing_list_id`, optionally only those updated since a date.
list_mailing_listsList your mailing lists with their IDs and descriptions.
list_message_templatesList saved message templates (the handwritten text used on mail pieces).
list_order_itemsList the individual mail pieces in an order by `order_id`, with each recipient's status.
list_ordersList your past and scheduled mail orders with their IDs and status.
list_webhooksList webhooks. Optional filters: items per page.
send_letterVisible to othersSend a handwritten-style letter in a windowless envelope with a `message`, handwriting style and recipients or mailing_list_ids. This orders real mail and charges your account; set preview=true to check it first.
send_notecardVisible to othersSend handwritten-style notecards with a `message`, front image, handwriting style and recipients or mailing_list_ids. This orders real mail and charges your account; set preview=true to check it first.
send_postcardVisible to othersSend handwritten-style postcards (4x6, 6x9 or 6x11) with a `message`, front_image_url or image template, handwriting style, and recipients, mailing_list_ids or a radius_search. This orders real mail and charges your thanks.io account; set preview=true to check it first without sending.
submit_mailing_lists_util_radius_searchVisible to othersCount a mailing lists util. Has effects visible outside this system. API summary: Radius Search Count.
track_orderGet the delivery tracking status of a mail order by `order_id`.
update_accountChanges dataUpdate an existing account identified by account id. API summary: Update Sub Account.
update_messageVisible to othersUpdate an existing message identified by message id. Only the fields you pass are changed. Has effects visible outside this system. API summary: Update Message Template.
update_order_item_invalidate_giftcardsVisible to othersUpdate an existing invalidate giftcard identified by order item id. Has effects visible outside this system. API summary: Invalidate Gift Card.
update_recipientChanges dataUpdate a recipient's name, address or custom fields by `recipient_id`. Only the fields you pass change.
update_webhookDeletesUpdate an existing webhook identified by webhook id. Destructive action; may require approval. API summary: Update Webhook.

Set up in three steps

1
Pick the app
Create a free HeyMyApps account and choose thanks.io from the app list.
2
Paste your key
Paste a thanks.io personal access token. In the thanks.io dashboard, open API Settings (dashboard.thanks.io/profile/api) and create a token. Turn on API Test Mode there while you try things out, so orders are cancelled instead of mailed.
3
Add the link to your AI
You get a personal MCP link. Add it to Claude, ChatGPT or Cursor:
1. Click your name, then Settings › Connectors › Add custom connector.
2. Paste your link as the Remote MCP server URL.
3. Switch it on from the + menu in a chat.

Questions

What can the AI do in thanks.io?

The AI can read mailing lists, recipients, message templates, handwriting styles, image templates, orders, order items and tracking. It can create mailing lists, add, update and remove recipients, send postcards, notecards and letters, and cancel orders before they are printed.

Does the AI see my thanks.io access token?

No. You enter your thanks.io access token in HeyMyApps once. It is encrypted at rest, never shown to the AI and never shown again after you save it, not even to you. The AI only gets the results of the tools you have switched on.

Can I control what the AI is allowed to do?

Yes. You choose which tools are switched on, so you can start read-only. Sending postcards, notecards and letters orders real mail and charges your thanks.io account, and removing recipients or cancelling orders cannot be undone. All of these can require your approval before they run. Every tool call is logged.

Does it work with ChatGPT?

Yes. In ChatGPT, open Settings › Apps & Connectors › Advanced, turn on Developer mode and add your HeyMyApps link. Developer mode needs a paid ChatGPT plan: Plus, Pro, Business or Enterprise. The same link also works in Claude (Settings › Connectors › Add custom connector), Cursor and other MCP clients.

What does it cost?

HeyMyApps has a free plan, and you do not need a credit card to start. Paid plans are billed per completed task. You also need your own thanks.io account. The mail itself is charged by thanks.io to your own account.

Can I try it without sending real mail?

Yes, in two ways. The send tools take preview=true, which checks a mail piece without sending it. You can also turn on API Test Mode in thanks.io API Settings, so orders are cancelled instead of mailed.