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Setting up Fastmail

To use Fastmail with Postbox you must either have a paid account, or if you are on trial, an account verified by phone number. For additional information, please see Fastmail support.

Here are the settings to use:

Incoming Server

Account Type: IMAP
Incoming Server: mail.messagingengine.com
Port: 993  (we believe 992 will work as well)
User Name: [your account]@fastmail.com
Connection Security: SSL/TLS
Authentication: Password

Outgoing Server

Server Name: mail.messagingengine.com
Port: 465
User Name: [your account]@fastmail.com
Connection Security: SSL/TLS
Authentication: Password