Getting started

Connect.
Check. Use.

Start with your account portal and a separate app password.

Thunderbird and mobile clients

Sign in to the account portal and confirm your second factor.
In the email application section, check your available protocols and create an app password.
Your username is your full email address. Use the app password you created.

Protocol	Server	Port / security
IMAP	mail.sec-mail.top	993 / SSL-TLS
SMTP	mail.sec-mail.top	465 / SSL-TLS or 587 / STARTTLS
POP3, if enabled	mail.sec-mail.top	995 / SSL-TLS

SMTP requires authentication with the same full address and app password. If automatic discovery fails, enter the server manually. These ports are usable only when the corresponding protocol is enabled for your account.

Free up space

Delete unwanted messages, then empty Trash and Junk. After syncing, check the timestamp of the usage measurement in your portal. Deleting only a local copy does not necessarily remove the message from the server.

Keep access to your account

Save your portal password, TOTP recovery codes or private PGP key and its passphrase. A public PGP key cannot decrypt a verification code. If initial setup is incomplete, it can be reset so you can choose another method.

Enter an encrypted recovery code from support ↗