Email, calendar and chat tools with official MCP servers
5 email, calendar and chat tools have an official MCP server listed here: Calendly, Gmail, Google Calendar, Microsoft 365 (Work IQ) and Slack. 4 of them work in Claude or ChatGPT without code, according to the vendors' own docs.
Which email, calendar and chat tools have an official MCP server?
Sorted by confirmed chat-app support, then by name. Categories: Email & Calendar, Scheduling & Booking, Team Messaging. Open the matrix to filter further.
| Tool | Works in | Access · credits |
|---|---|---|
| Calendly Scheduling & Booking |
ClaudeChatGPT |
Read + writeCredits not confirmed |
| Gmail Email & Calendar |
ClaudeNeeds admin or IT |
Read + writeCredits not confirmed |
| Google Calendar Email & Calendar |
ClaudeNeeds admin or IT |
Read + writeCredits not confirmed |
| Slack Team Messaging |
ClaudeClaude CodeCursorNeeds admin or IT |
Read + writeCredits not confirmed |
| Microsoft 365 (Work IQ) Email & Calendar |
CopilotNeeds admin or IT |
Read + writeEvery call uses credits |
What can each one do?
The tools each server exposes, as its vendor's docs describe them.
- Calendly (Scheduling & Booking): event types, availability, book/cancel events, scheduling links.
- Gmail (Email & Calendar): search_threads, get_thread, list_drafts, create_draft.
- Google Calendar (Email & Calendar): list_calendars, list_events, get_event, suggest_time.
- Microsoft 365 (Work IQ) (Email & Calendar): fetch / fetch_blob (read mail, calendar, Teams, files), create_entity / update_entity / delete_entity, do_action / call_function (e.g. send mail, calendar view), ask / retrieve / list_agents (Microsoft 365 Copilot).
- Slack (Team Messaging): search messages/files/users/channels, send/schedule messages, canvases, lists.
Which recipes use email, calendar and chat tools?
- Book meetings from replies (Instantly + Calendly + HubSpot)
- Weekly pipeline digest to Slack (HubSpot + Slack)
- CRM hygiene sweep: send each rep their own fix-it list in Slack (HubSpot + Slack)
- Post-call follow-up: recap email, next steps and a CRM update (Granola + HubSpot + Gmail)
- Warm-visitor alert: tell the owning rep in Slack who was on the site (Warmly + HubSpot + Slack)
- Weekly partner co-sell digest to Slack (Crossbeam + PartnerStack + Slack)
- Quarterly attribution readout: pipeline by channel, checked against the CRM (HockeyStack + HubSpot + Slack)
- Forecast reality check: flag Commit and Best Case deals with no recent activity (Salesforce + Gong + Slack)
- Morning plan: today's meetings, overdue follow-ups and emails waiting on you (Google Calendar + Gmail + HubSpot)
- Inbox triage: prospect emails waiting on you, matched to open deals with nudge drafts (Gmail + HubSpot)
- Onboarding kickoff pack: Notion page, kickoff link and intro email when a deal closes (HubSpot + Gong + Notion + Calendly)
- Failed payment save play: alert CS with account context before a missed payment turns into churn (Stripe + HubSpot + Slack)
Other categories: CRM · Outreach and sales engagement · Prospecting and data · Intent and signals · Research and scraping · Call recording and support · Automation and workflow · Marketing and content · Attribution, partners and billing