# Lettr

> Use this tool when you need to streamline transactional email operations with programmable capabilities, such as sending templated emails and managing email templates through a drag-and-drop editor API. It solves problems like DNS verification and webhook delivery monitoring, making it ideal for developers who require automated email services. With template support and merge tags, Lettr provides a flexible interface for customizing and sending emails.

Canonical page: https://skillsregistry.net/skills/lettr  
JSON: https://api.skillsregistry.net/v1/skills/lettr

## Description

Official Lettr integration for transactional email operations. Send emails with template support and merge tags, manage email templates through the drag-and-drop editor API, configure sending domains with DNS verification, and monitor webhook deliveries. Built for developers who need programmatic email capabilities.

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** communication
- **Updated:** 2026-04-25

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/lettr)
- **Repository:** <https://github.com/lettr-com/lettr-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "lettr"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/lettr` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/lettr/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt