Reletter MCP server
{
"mcpServers": {
"reletter": {
"type": "http",
"url": "https://mcp.reletter.com"
}
}
}{
"mcpServers": {
"reletter": {
"type": "http",
"url": "https://mcp.reletter.com"
}
}
}{
"mcpServers": {
"reletter": {
"type": "http",
"url": "https://mcp.reletter.com"
}
}
}{
"servers": {
"reletter": {
"type": "http",
"url": "https://mcp.reletter.com"
}
}
}{
"mcpServers": {
"reletter": {
"type": "http",
"url": "https://mcp.reletter.com"
}
}
}file .mcp.json (in your project root)file claude_desktop_config.jsonfile ~/.cursor/mcp.jsonfile .vscode/mcp.jsonfile ~/.codeium/windsurf/mcp_config.jsonversion 0.1.0
What it does
Reletter exposes search and analysis of 7M+ newsletters across Substack, LinkedIn, Ghost, Beehiiv, and Kit platforms. It lets you find newsletters, read issue content, get contact information, and track chart rankings. This is for developers, marketers, and AI agents who need to research, discover, or target newsletters.
- Search newsletters by topic, audience size, or platform, then extract verified contact emails for outreach campaigns.
- Analyze newsletter issue text to monitor brand mentions, track competitor coverage, or find pitch opportunities.
- Pull daily chart rankings and newsletter metadata to build sponsorship or cross-promotion target lists.
Tools this server exposes
| Tool | Does |
|---|---|
| search_publications | Search for newsletters by topic, title, or author with filtering options. |
| search_issues | Full-text search across newsletter issue bodies. |
| autocomplete | Get suggested keywords and matching newsletters for a partial query. |
| get_publication | Retrieve full metadata for a newsletter including subscribers, engagement, social, rankings, and SEO reach. |
| list_issues | Fetch recent issues for a specific publication. |
| get_issue | Retrieve a single issue with full body text. |
| contacts | Get email contacts, contact pages, and social accounts for a newsletter. |
| chart_categories | List available chart platforms and categories. |
| chart_rankings | Fetch latest chart rankings for a platform or category. |
| list_languages | Reference list of supported languages. |
| api_quota | Check your API request quota and monthly usage. |
Before you enable it
An MCP server runs with whatever access you give it. Start with a development account rather than production, and check which tools the server exposes before you let an agent call them unattended.