SendLetter
Sendletter v3.0.0
Send physical letters
From the developer
Declared capabilities
- Check sending setup
- Manage return addresses
- Quote and preview a letter
Cost & access
The paid purchase is the printing and postal delivery of one physical letter. The user reviews and approves that letter before sending. Existing account balance may fund it, or an eligible personal letter can use merchant-hosted checkout for that specific physical letter. The app does not sell credits, subscriptions or digital goods in ChatGPT. Sandbox review never charges or posts.
Declared limitations
- Email is outside the physical-letter service.
- Unrelated parcel tracking is outside scope.
- Do not sell credits or subscriptions in ChatGPT.
Onboarding example
How much would a two-page letter to Germany cost?
Sources & dates
Developer declarations; not independently tested. Listing last checked Nov 6, 2026. Package observed Nov 6, 2026.
Description
From the marketplace listing
SendLetter helps you prepare and send physical letters from your connected account. Check your sending setup, manage return addresses, validate address formats, calculate a price and preview your letter before deciding to send. You review the recipient, document, mailing options and total before approving a physical mailing. Sending uses your existing account balance; an eligible individual letter can instead be paid for through SendLetter’s website checkout. Follow letter status and cancel only while cancellation is still available. Supported destinations and options depend on the current service. A sandbox account simulates the workflow without charging, printing or posting. SendLetter is operated by Twilper.
Language: English · Automatically detected from descriptions.
Changes
No changes recorded yet. Follow this plugin to keep track of future changes.
First seen Nov 5, 2026. Last seen Nov 6, 2026.
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Keywords
Files & skills
File archives
Release notes
Update the public package with the remote MCP endpoint, OAuth registration settings, current SendLetter branding, Dutch listing text and five positive/three negative review cases. Approval and publication remain separate portal steps.
Declared in the saved package. Remote tools may change independently.
Package details
Publisher declarations from the archived package. These are separate from our research and the live service's terms.
- Package author
- Twilper.com
- Keywords
- See keywords
- Listing translations
- nl-NL
- Commerce declaration
- Supports commerceThis does not establish whether access is free or paid.
- Review scenarios
- 5 positive · 3 negativeScenario counts, not test results.
Declared capabilities
- Check sending setup
- Manage return addresses
- Quote and preview a letter
- Confirm physical mailing
- Check status and eligible cancellation
Package observed Nov 6, 2026.
Technical details
- First seen
- Nov 5, 2026 · 00:00 UTC
- Last seen
- Nov 6, 2026 · 18:00 UTC
- Collection status
- Collected
plugin_asdk_app_6ad92e9c7aac8191b5bb7d81fbef9b1b
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