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Fastmail Email Settings

Last updated: February 21, 2026

How to connect your Fastmail email account (fastmail.com, fastmail.fm) to InflowMail.

Server Settings

Incoming Mail (IMAP)

Server
imap.fastmail.com
Port
993
Security
SSL/TLS

Outgoing Mail (SMTP)

Server
smtp.fastmail.com
Port
587
Security
SSL/TLS

App Password Required

Fastmail requires an app-specific password instead of your regular account password. This is a security feature that lets you grant limited access to third-party apps.

Generate App Password

Supported Domains

These email domains use Fastmail's servers and will be automatically detected by InflowMail:

@fastmail.com@fastmail.fm

Notes

Create an app password in Fastmail settings.

How to Connect Fastmail to InflowMail

  1. 1 Create an InflowMail account or sign in to your existing account.
  2. 2 Go to Settings > Connected Accounts and click Add Account.
  3. 3 Select IMAP and enter your fastmail.com email address. InflowMail will auto-detect the server settings.
  4. 4 Enter the app password you generated (not your regular password).
  5. 5 Your emails will start syncing immediately. The initial sync may take a few minutes for large mailboxes.

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