Fastmail has built a loyal following among power users and privacy-conscious professionals for good reason. It's fast, reliable, has excellent IMAP support, and doesn't run ads or mine your data. If you're already using Fastmail, you've made a thoughtful choice about your email.
Now AI assistants are becoming genuinely useful for email — reading threads, drafting replies, searching your inbox by meaning rather than keyword. The question is: how do you connect Fastmail to AI without compromising the privacy-first setup you chose Fastmail for in the first place?
This guide covers exactly that: how to connect Fastmail to an AI assistant using IMAP and MCP, what you can do with it, and how to keep the connection secure.
Why Fastmail Works Well for AI Integration
Not all email providers are equally AI-friendly. Some make app password setup cumbersome. Some have rate limits that make IMAP polling impractical. Some only expose limited IMAP folder structures.
Fastmail is one of the better options for AI integration because:
Robust IMAP support. Fastmail's IMAP implementation is full-featured and reliable. It supports IMAP IDLE for near-instant new-message detection, full folder access, and all the standard message operations.
First-class app password support. Fastmail has a clean app password management interface. You can create a named app password for your AI assistant connector, assign it specific permissions, and revoke it instantly if needed. No 2FA bypass risk.
No artificial rate limiting for legitimate clients. Fastmail doesn't aggressively throttle IMAP connections from well-behaved clients, which matters for AI workflows that may read many messages in a session.
Privacy-aligned. Fastmail's business model is subscriptions, not data. Connecting your Fastmail account to an AI tool that also handles your data responsibly is consistent with why you chose Fastmail.
Setting Up a Fastmail App Password
Before you connect Fastmail to any AI integration, you'll create a dedicated app password. This is separate from your main Fastmail login and can be revoked without changing your actual password.
Step 1: Open Fastmail Security Settings
Log in to Fastmail, go to Settings → Privacy & Security → Integrations, then scroll to the Passwords section and click New App Password.
Step 2: Name and Configure the Password
Give it a descriptive name — "AI Email Connector" or "Your AI IMAP Access" — so you know what it's for later. Fastmail lets you scope the password to specific access types. For read/write email access, you'll want to enable mail.
Step 3: Copy the Generated Password
Fastmail shows the app password once. Copy it immediately and save it somewhere secure (a password manager). You'll use this when setting up your AI assistant connector.
Connecting Fastmail to AI via Connect My Email
Connect My Email is an MCP (Model Context Protocol) server that gives AI assistants like your AI assistant live access to your Fastmail inbox via IMAP and SMTP. Once connected, your AI assistant can read, search, and send email directly.
IMAP Settings for Fastmail
When setting up Connect My Email with Fastmail, use these server details:
- IMAP server:
imap.fastmail.com - IMAP port:
993(SSL/TLS) - SMTP server:
smtp.fastmail.com - SMTP port:
465(SSL/TLS) or587(STARTTLS) - Username: Your full Fastmail email address
- Password: The app password you generated above (not your Fastmail login password)
These are standard Fastmail IMAP settings — the same ones you'd use to configure any desktop email client.
Connecting to Your AI Assistant
Connect My Email implements the Model Context Protocol, which your AI assistant and other compatible AI assistants support natively. Once configured, your AI assistant gains a set of email tools it can call:
- Search your inbox by sender, subject, date, or content
- Read individual messages and full threads
- List folders and their contents
- Draft and send replies or new messages
What You Can Do With Fastmail + AI
Once your Fastmail account is connected to your AI assistant, here are some workflows that become available:
Inbox Triage and Summarization
"Give me a summary of everything that came in from my top 5 senders this week."
The AI reads recent messages, groups them by sender or topic, and gives you a prioritized briefing. Useful after time away from your inbox.
Context-Aware Reply Drafting
"Draft a reply to the latest email from Jordan about the Q3 report. Keep it concise and say we'll have numbers ready by end of week."
The AI finds the thread, reads it fully, and drafts a reply in context. No copy-pasting required.
Search by Meaning, Not Just Keywords
"Find any emails where someone asked me about pricing or a quote in the last 30 days."
Traditional email search matches keywords. AI search understands intent — it'll catch "what does it cost," "do you have a rate card," and "can you send a proposal" alongside the literal word "pricing."
Automated Follow-Up Reminders
"Check if anyone I emailed last week hasn't replied yet and draft follow-ups for any that look like they're waiting on me."
The AI scans your sent folder, cross-references replies, identifies gaps, and drafts follow-ups for your review.
Email-Triggered Workflows
When new email arrives matching criteria you specify, your AI assistant can take action: draft a response, extract structured data, forward with a summary, or notify you through another channel. Fastmail's reliable IMAP IDLE support makes these near-real-time.
Security Considerations for Fastmail AI Integration
Connecting Fastmail to AI doesn't have to compromise your privacy posture. Here's how to keep the integration clean:
Use a dedicated app password. Never use your main Fastmail login password with any third-party integration. App passwords are isolated and revocable.
Review what access the connector requests. A read-only integration (IMAP only, no SMTP) is sufficient if you only want AI to read and search. Add SMTP access only if you want the AI to draft and send.
Check whether email content is stored. Connect My Email acts as a live bridge — it fetches emails on demand but doesn't persist a copy of your messages on its own servers. This is consistent with the privacy expectations of a Fastmail user.
Revoke access when not needed. If you only use the AI integration occasionally, you can delete the app password and recreate it when you need it again. Fastmail makes this easy.
Fastmail vs. Other Providers for AI Integration
Fastmail stands out in a few ways compared to the more common options:
| Feature | Fastmail | Gmail | Outlook |
|---|---|---|---|
| App password support | Yes, full | Yes (requires 2FA) | Yes (via account settings) |
| IMAP IDLE support | Yes | Yes (limited) | Yes |
| Privacy-first business model | Yes | No | No |
| IMAP rate limits | Permissive | Moderate | Varies |
| Setup complexity | Low | Low-medium | Medium |
For AI integration specifically, Fastmail's combination of solid IMAP support and first-class app passwords makes it one of the smoothest setups available.
Getting Started
Connect My Email offers a free plan for getting started, Pro at $9/month for regular use, and Power at $25/month for high-volume or multi-account workflows. There's also a one-time $19 sweep for processing a backlog without a subscription commitment.
Fastmail + AI is a natural pairing: a privacy-respecting email provider and a connector that doesn't compromise that trust. If you've already invested in a quality email setup, it makes sense to give your AI assistant proper access to it.
Connect your Fastmail account to your AI assistant or your preferred AI assistant in minutes. Connect My Email supports Fastmail, Gmail, Outlook, iCloud, Yahoo, and generic IMAP. Full inbox access, no email storage, revocable app passwords.