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mailbox.org IMAP and SMTP settings

The servers, ports and password you need to add mailbox.org to any mail app, checked against mailbox.org's own help pages.

Updated October 18, 2026

mailbox.org works in any mail app with these servers. With two-factor authentication on, use a Mail app password.

mailbox.org IMAP and SMTP settings

Settingmailbox.org
IMAP (incoming) serverimap.mailbox.org
IMAP (incoming) port993
IMAP (incoming) encryptionSSL/TLS
SMTP (outgoing) serversmtp.mailbox.org
SMTP (outgoing) port465
or 587 with STARTTLS
SMTP (outgoing) encryptionSSL/TLS
UsernameYour full mailbox.org address
PasswordYour password, or a Mail app password with two-factor authentication on
AuthenticationNormal password

Make a Mail app password

  1. Open security settings. In mailbox.org, go to All settings, then Security, then Mail app passwords.
  2. Create one for IMAP and SMTP. Allow IMAP and SMTP, then copy the password into your mail app.

Use mailbox.org in GotEmail

In GotEmail, choose Add Account, then Other (IMAP), and type the settings from the table: the IMAP and SMTP servers, their ports and encryption, your username and password. GotEmail checks them as you sign in and tells you what to fix if a server says no.

Good to know

  • You only need a Mail app password when two-factor authentication is on.

Checked against mailbox.org's own help pages: mailbox.org email configuration.

Questions

What is the IMAP server for mailbox.org?

mailbox.org's IMAP server is imap.mailbox.org, port 993, with SSL/TLS encryption.

What is the SMTP server for mailbox.org?

mailbox.org's SMTP server is smtp.mailbox.org, port 465 with SSL/TLS, or 587 with STARTTLS.

Which SMTP port does mailbox.org use?

465 with SSL/TLS, or 587 with STARTTLS.

Do I need an app password for mailbox.org?

Only with two-factor authentication on. Then create a Mail app password with IMAP and SMTP allowed.

Skip the settings.

GotEmail fills in mailbox.org's servers for you, and keeps every account in one fast, private Mac app.