Connect Fastmail

Connect your Fastmail mailbox with an app password over IMAP and SMTP. Mailera tests the login before saving, so you know right away whether the mailbox works.

Connection steps

Mailera also shows these instructions next to the input field when you add a Fastmail mailbox.

Fastmail → Settings → Privacy & Security → Manage app passwords and access.
Click New app password, select “Mail (IMAP/POP/SMTP)” access, and name it “Mailera”.
Paste the password into the field beside this guide.

What you need

Account plan includes IMAP

Note Requires a Fastmail plan with IMAP access.

Provider links

Servers

Servers	Host	Port	Security
Incoming email (IMAP)	imap.fastmail.com	993	SSL/TLS
Outgoing email (SMTP)	smtp.fastmail.com	587	STARTTLS

What Mailera can do with Fastmail

Receive and read email messages in all folders
Send, reply to, and forward email messages
Move email messages between folders
View email messages in Junk Email and move them to Inbox
Monitor continuously and notify you of new email messages via webhook

Published limits

Mailera has no official sending limit figures for Fastmail. Send at a typical user's pace.

Addresses Mailera recognizes

fastmail.com
fastmail.fm
fastmail.net
fastmail.org
fastmail.to
fastmail.us
fastmail.co.uk
sent.com
messagingengine.com

Mailera also recognizes custom domains using Fastmail through their MX records.

Other providers

View all providers

Names and logos belong to their respective owners. Mailera is not affiliated with or certified by these providers.

Connect your first Fastmail mailbox

Create a free workspace, select Fastmail, and follow the steps above — Mailera checks the login before saving.

Create a free workspace Provider table in the API docs