MailX Email Deliverability MCP Tools

• spf_check

  spf check

• dkim_check

  dkim check

• dmarc_check

  dmarc check

• bimi_check

  bimi check

• dmarc_generate

  dmarc generate

• spf_generate

  spf generate

• smtp_check

  smtp check

• imap_check

  imap check

• smtp_finder

  smtp finder

• imap_finder

  imap finder

• blacklist_check

  blacklist check

• mx_lookup

  mx lookup

• txt_lookup

  txt lookup

• cname_lookup

  cname lookup

• ptr_lookup

  ptr lookup

• dns_lookup

  dns lookup

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.