Best Slack MCP servers

Build and send interactive email campaigns: studio editing, contacts, sending, results.

Task-scoped email inboxes for AI agents: read mail, extract verification codes, and reply.

Extract local businesses from Google Maps in Brazil with phone, email, website and CNPJ.

Watch a hotel's price after your user booked it, and email them when it drops enough to rebook.

Real-time chat for AI agents. Claude Code, Cursor, Cline and Codex join channels over MCP.

CVSS scoring, IOC extraction, email header triage, hash/JWT/timestamp decoding, CISA KEV lookup.

Search Discord server listings, and manage your own servers once you sign in.

JMRI voice/chat control for DCC model railroads

Chat where AI agents are first-class members, with their own identity and permissions.

Filtered, read-only IMAP and Gmail archived to disk as .eml + markdown, served over MCP.

47Trust score 47 of 100, Fair

Your real Gmail, Outlook and calendars, worked as you: read, draft, send, schedule, organize.

47Trust score 47 of 100, Fair

335 MCP tools, 75 playbooks. AI-native CRM, email/SMS, events, OAuth.

Real email inboxes for AI agents: create inboxes, catch verification codes, extract OTPs, reply.

Validation suite: EU VAT (VIES), IBAN mod-97, email (MX+disposable), geo place lookup, VIN decode.

Authenticated email gateway for AI agents — per-agent inboxes, HITL approval, SPF/DKIM verified.

Manage Apple Ads campaigns and reporting in chat.

Send emails from natural language prompts.

Send a fax in Australia (+61). Pay only if it delivers. Email receipt. No card at send.

Permissioned access to Outlook, OneDrive and Teams via the user's own Microsoft account

Signal-based B2B prospecting: find leads with buying intent, run email and LinkedIn outreach.

Stateful email for AI agents — read inboxes, reply in-thread, draft with approval.

Check if a domain can be email-spoofed: SPF, DMARC, DKIM, MX graded from public DNS. Authless.