Microsoft 365 Calendar alternatives
24 email MCP servers from other publishers do the same job as Microsoft 365 Calendar. The closest match comes first, then the best rated, with at most two per publisher.
Microsoft Outlook personal accounts: mail, rules, calendar, contacts, to-do, drafts (77 tools).
No reviews yetlocal · pypi371.3k/wkFreeMicrosoft Outlook MCP server — 22 tools for email, calendar, contacts, and mailbox management.
No reviews yetlocal · npm39500/wkFreeEmail MCP server for AI agents: IMAP/SMTP, Gmail, Outlook, calendar, ManageSieve, AI triage, OAuth2.
5.0(1)local · npm1.3k/wkFreeNever-stored live email: read, send and triage Gmail, Outlook / Microsoft 365, or any IMAP mailbox.
No reviews yetgateway-ready1027/wkFreeOutlook & OneDrive MCP: personal & enterprise tools for mail, calendar, contacts, tasks, files
No reviews yetlocal · npm20296/wkFreeOutlook Mail (Microsoft 365) MCP Pack
No reviews yetgateway-ready332/wkFreeOutlook Contacts (Microsoft 365) MCP Pack
No reviews yetgateway-ready317/wkFreeOutlook integration with OAuth, message search, batch operations, and calendar management
No reviews yetlocal · npm2528/wkFreeGoogle Workspace MCP server for Gmail, Drive, Calendar, Docs, Sheets, Slides, Forms, Tasks, Chat.
No reviews yetlocal · pypi3.5k96k/wkFreeSearch Gmail and Outlook, save drafts, manage email rules, and view email stats.
No reviews yetgateway-ready13kFreeMac & Windows: let ChatGPT, Claude & Cursor use your email, calendar, iMessage, Teams, files.
No reviews yetgateway-ready712.0k/wkFreeGive AI agents access to Gmail, Calendar, Drive, and more — multi-account, manifest-driven
No reviews yetlocal · npm1921.8k/wkFreeUnified email MCP server for Gmail, Outlook, iCloud, and IMAP with batch operations
No reviews yetlocal · npm26305/wkFreeRead, search, draft, send, and organize email through Gmail, Outlook, and IMAP/SMTP mailboxes.
No reviews yetlocal · npm7635/wkFreeModern email for your business. Inboxes, calendars, newsletters and an API for your agents.
No reviews yetgateway-ready1647/wkFreeGive AI agents a real email address, vault, calendar, and task delegation via MCP.
No reviews yetgateway-ready591/wkFreeLocal email connectivity for AI agents — read, draft, send, and organize Outlook mail via MCP
No reviews yetlocal · npm6335/wkFree67 curated MCP tools for Google Workspace: Gmail, Calendar, Drive, Sheets, Docs, Slides, Tasks.
No reviews yetlocal · npm13356/wkFreeEmail MCP server for Gmail, Outlook and any IMAP mailbox, hardened against prompt injection
No reviews yetlocal · npm4143/wkFreeTeaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 21 rules, 6 comps.
No reviews yetgateway-ready114/wkFreeSearch the Entra.news newsletter archive — a weekly digest of Microsoft Entra news
No reviews yetlocal · npm759/wkFreeMCP server for Google Workspace — Sheets, Drive, Docs (HTML or Markdown), Calendar, and Gmail.
No reviews yetlocal · pypi4.5k/wkFreeZeroDB agent-memory MCP — 18 tools: memory + write-back to Slack, Gmail, Calendar, GitHub.
No reviews yetlocal · npm1550/wkFreeGoogle Workspace MCP — Docs, Drive, Calendar, Gmail, Sheets, Slides, Tasks, Chat, People, Forms
No reviews yetlocal · mixed1669/wkFree
Microsoft 365 Calendar alternatives by what you need
Open source Microsoft 365 Calendar alternatives (21)
Published under an open licence such as MIT or Apache-2.0.
Outlook MCP, Outlook Assistant, Mailoo - Email MCP Server, MCPEmails, Outlook, Outlook Mail, Outlook Contacts, Outlook and 13 more below.
Hosted Microsoft 365 Calendar alternatives (8)
Nothing to install: a remote endpoint you add by URL. Also callable through the mcp.market gateway.
MCPEmails, Outlook Mail, Outlook Contacts, Inbox Zero, LMCP, Shipmail, AgentLair, HTML Email Playbook.
Local Microsoft 365 Calendar alternatives (16)
A package you install and run on your own machine, so your data stays on your computer.
Outlook MCP, Outlook Assistant, Mailoo - Email MCP Server, Outlook, Outlook, Workspace, Google Workspace, Email and 8 more below.
Safest Microsoft 365 Calendar alternatives (16)
Graded A: passed every check the scanner runs on the latest release.
Outlook MCP, Outlook Assistant, Mailoo - Email MCP Server, MCPEmails, Outlook, Workspace, Inbox Zero, Google Workspace and 8 more below.
Microsoft 365 Calendar and its alternatives compared
| Server | Grade | Rating | Licence | Runs | Stars |
|---|---|---|---|---|---|
| Microsoft 365 Calendar(this one) | A94 | No reviews yet | NOASSERTION | Local | 14 |
| Outlook MCP | A89 | No reviews yet | MIT | Local | 37 |
| Outlook Assistant | A85 | No reviews yet | MIT | Local | 39 |
| Mailoo - Email MCP Server | A85 | 5.0 (1) | LGPL-3.0 | Local | 0 |
| MCPEmails | A98 | No reviews yet | AGPL-3.0 | Hosted | 10 |
| Outlook | A89 | No reviews yet | MIT | Local | 20 |
| Outlook Mail | B83 | No reviews yet | MIT | Hosted | 0 |
| Outlook Contacts | B83 | No reviews yet | MIT | Hosted | 0 |
| Outlook | C66 | No reviews yet | MIT | Local | 2 |
| Workspace | A92 | No reviews yet | MIT | Local | 3.5k |
| Inbox Zero | A97 | No reviews yet | NOASSERTION | Hosted | 13k |
| LMCP | B72 | No reviews yet | NOASSERTION | Hosted | 71 |
| Google Workspace | A92 | No reviews yet | Apache-2.0 | Local | 192 |
| A85 | No reviews yet | MIT | Local | 26 | |
| Fluxmail | B82 | No reviews yet | NOASSERTION | Local | 7 |
| Shipmail | A96 | No reviews yet | MIT | Hosted | 1 |
| AgentLair | A89 | No reviews yet | MIT | Hosted | 5 |
| Agent Email | A94 | No reviews yet | Apache-2.0 | Local | 6 |
| Google Workspace MCP Server | A92 | No reviews yet | MIT | Local | 13 |
| pylos-mcp | B83 | No reviews yet | MIT | Local | 4 |
| HTML Email Playbook | A93 | No reviews yet | MIT | Hosted | 0 |
| Entra News | A92 | No reviews yet | MIT | Local | 7 |
| Gee Sweet | B83 | No reviews yet | MIT | Local | 0 |
| Ainative Zerodb Memory | A94 | No reviews yet | MIT | Local | 1 |
| Better Workspace | B83 | No reviews yet | Apache-2.0 | Local | 1 |