10 tagged deliverability, measured the same way as everything else here.
optipub/gmail-postmaster-tools-mcp
MCP server Claude CodeCodexCursor +2
MCP server "gmail-postmaster-tools" as configured in optipub/gmail-postmaster-tools-mcp. Launched with https://github.com/optipub/gmail-postmaster-tools-mcp/releases/download/v1.0.1/g.
MCP server Claude CodeCodexCursor +2
MCP server "outlook-snds" as configured in optipub/outlook-snds-mcp. Launched with https://github.com/optipub/outlook-snds-mcp/releases/download/v1.0.4/outlook-snd.
live-direct-marketing/ldm-inbox-check-mcp
MCP server Claude CodeCodexCursor +2
Email inbox placement tests across Gmail, Outlook, Yahoo, Mail.ru, Yandex (SPF/DKIM/DMARC). Runs locally from the ldm-inbox-check-mcp npm package. Needs 2 environment variables to run.
MCP server Claude CodeCodexCursor +2
Deterministic pre-send lint for SMS/iMessage: silent carrier filtering and segment blowups. Runs locally from the willitsend npm package. Needs 1 environment variable to run.
helbertparanhos/resend-email-mcp
MCP server Claude CodeCodexCursor +2
Complete Resend email MCP: full API coverage + debug layer (deliverability, DNS, bounces). Runs locally from the resend-email-mcp npm package. Needs 5 environment variables to run.
justinwilliames/orbit-for-claude
MCP server Claude CodeCodexCursor +2
One of 3 in server.json
MCP server "braze-lifecycle-mcp" as configured in justinwilliames/orbit-for-claude. Launched with https://github.com/justinwilliames/orbit-for-claude/releases/download/v0.31.0/or.
MCP server Claude CodeCodexCursor +2
MCP server "mailx-mcp" as configured in Mailwarm/mailx-mcp. Runs locally from the @mailwarm/mailx-mcp npm package.
MCP server Claude CodeCodexCursor +2
Runs a deep mailbox existence check to verify catch-all, accept-all, and SEG protected emails. Remote server at mcp.giggal.ai.