# Card Mailer Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## Card Mailer

Print and mail 5x7 photo cards to US addresses for holidays and thank-you notes.

- Record: https://musedirectory.ai/connector/card-mailer
- Category: Shopping & Commerce
- Developer: OnMax (https://cards.onmax.me)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 154ms, checked 2026-10-29T20:06:45Z
- Endpoint: https://cards.onmax.me/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-10-29T20:06:45Z)
- Source: Found in the official MCP Registry (me.onmax/card-mailer) https://registry.modelcontextprotocol.io/v0/servers?search=me.onmax%2Fcard-mailer

Prints and mails personalized 5x7 photo cards to a list of US postal addresses. Upload addresses as text or spreadsheet, design your card with a photo and message, get a quote, and pay to send. Cards include First-Class postage. $2.49 per card.

Example request: "Mail holiday photo cards to 50 family and friends at their home addresses."

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Card Mailer to help me. It is a free service with an MCP server at https://cards.onmax.me/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- import_address_list: Use this when the user wants to mail printed cards to people at US postal addresses and gives the addresses as pasted text, a CSV, or an .xlsx spreadsheet. Reads names and addresses, checks each against USPS data, and saves them as a recipient list. Returns a list_id, how many ro
- fix_address: Use this to correct or remove one recipient in a list from import_address_list, by row number. Given fields replace the stored values and omitted fields keep theirs; if the row's problem says it could not be read, pass name, line1, city, state and zip together. Re-checks the addr
- design_card: Use this to create or edit the printed 5x7 postcard: a greeting on the front over or under the photo, and a message and sign-off on the back. Pass the photo the user attached as photo, or a public https image URL as photo_url; the image is downloaded and stored on cards.onmax.me.
- quote_mailing: Use this when the user asks what mailing a card to an imported list costs or when it will arrive. Returns the price per card (First-Class postage included), the total for the ready recipients, the send date and the expected arrival window. If the cards must arrive by a date, pass
- create_mailing: Use this when the user has seen the card and the quote and says they want to order. Creates an unpaid order for the ready recipients in list_id with design_id and returns a link to cards.onmax.me, where the user reviews the recipients and pays. Nothing is printed, mailed or charg
- get_mailing_status: Use this when the user asks whether a Card Mailer order was paid, printed, mailed or delivered. Takes the mailing_id returned by create_mailing (also the last part of the order link). Returns the status, send date, expected arrival and per-recipient counts. Does not change the or

Screening checks:
- MCP handshake: pass (Answered in 154ms)
- Domain against threat feeds (Cloudflare security DNS): pass (cards.onmax.me not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (6 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)