To work with a mailbox from a browser (without a mail program), you can use the link:
https://your-domain/webmail or
https://your-domain:2096
When prompted for a login, enter the full name of the mailbox (name@your-domain) to which you want to access, and when asked for a password, enter the password for this mailbox.
In case of successful authorization, you will be able to access the desired mailbox through one of three programs: - - - Horde,
- SquirrelMail,
- Roundcube.
You can choose any one that seems most convenient to you. Please note that the size of attachments in emails sent from the web interface.