Agent
Discoverability

Lettermint

Ask about your email delivery

View in the Claude registry
Integration details

Description

Lettermint is a European email service for transactional email and broadcast email. This plugin connects your Lettermint account to your AI assistant. Instead of clicking through projects and logs in the dashboard, you just ask. Why you'll use it A customer says their confirmation never arrived. You ask, and within seconds you know if it was delivered, bounced or is still on its way. Your marketer wants to know how the latest campaign did. You get the delivery numbers next to last month's. Not sure which route to use for a newsletter, or whether your domain is set up correctly? You ask for that too. What you can do - Look up a message and see if it was delivered, bounced or is still on its way - See which emails a project sent in a certain period - Check the health and DNS setup of a sending domain - View delivery statistics and plan usage, and compare periods - Manage projects, routes, sending domains, webhooks and suppressions - Send a test email or resend an existing message Privacy Transactional email often contains password resets, invoices and order details. That is why personal data in your emails is hidden from the assistant by default. It sees whether and how a message was delivered, but not what was in it or who it went to. Because sending needs a recipient address, sending email only works when this filtering is switched off. If your emails contain no personal data, for example newsletters, you can switch it off in your team settings. The assistant can then also see the content and send email for you. How access works You need a Lettermint account. You sign in with your own account, so there is no API key to paste. The assistant only reaches the teams and projects you already have access to, and your team can switch off access at any time.

Integration type
Connector
Verification status
Community connector
Platform
Claude
Category
Developer Tools

The broad Category that contains the Primary Subcategory.

Primary Subcategory
Email APIs & Programmable Inboxes

The Primary Subcategory used for this profile’s headline score.

Secondary Subcategories
None listed

Other Subcategories where the Integration is listed.

Access
Account required
First tracked
2026-10-09
Tool count
50
Market
US
Agent DiscoverabilityClaude Discoverability Score

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Primary Subcategory
12 scoredVerified connectors by score · Community connectors A–Z
Primary Subcategory
1Resend57/100
2Bird52/100
3AgentMail46/100
4Inkbox31/100
5Gmail25/100
—AgentiSendPending VerificationGet notified
—AgentMailerPending VerificationGet notified
—AI Mail MCPPending VerificationGet notified
—AllStackdPending VerificationGet notified
—api.replylayer.aiPending VerificationGet notified
—api.temp-mail.ioPending VerificationGet notified
—CheramiPending VerificationGet notified
—Cooper EmailPending VerificationGet notified
—CyberpigeonPending VerificationGet notified
—eusendPending VerificationGet notified
—LettermintPending VerificationGet notified
—MachineMailPending VerificationGet notified
—MailerooPending VerificationGet notified
—MailLogicPending VerificationGet notified
—OwnmailserverPending VerificationGet notified
—PidgeonPending VerificationGet notified
—PoofboxPending VerificationGet notified
—ProntunoPending VerificationGet notified
—RobotomailPending VerificationGet notified
—SecureSMTPPending VerificationGet notified
—SendHQPending VerificationGet notified
—Tmailor Temp MailPending VerificationGet notified
Tools

50 tools agents can invoke

Recommended guideHow to get your Claude Connector organically discoveredFollow the practical steps agents use to find, shortlist, and choose your Connector.Read guide
FAQs

Lettermint Claude Connector FAQ

How the directory, categories and Discoverability Score work.

Read the methodology
How do I improve Lettermint's Claude Connector discoverability?

The levers are the listing surface agents actually read: names, descriptions, keywords, tool metadata, and registry health. Which lever matters depends on where discovery breaks, which is what continuous measurement shows.

What are Lettermint alternatives on Claude?

As of 2026-11-02, Lettermint competes with Resend, Bird, AgentMail, Inkbox, Gmail, Superhuman Mail, Loops, Braze and 25 more in Claude Email APIs & Programmable Inboxes, ranked by public Discoverability Score.

Where is this profile measured?

This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.