Your Opalstack email service includes webmail service available at:
The webmail service is running the Roundcube open source webmail system.
To use the webmail service:
Go to the webmail URL in your browser.
Select your regional webmail server (US or Germany).
Enter your mail user's username and password into the spaces provided.
Click the Login button.
The first time you log in you'll be prompted to set your sender identity by providing your name and email address. The information you enter here will be used on your outgoing mail.
The email address that you provide must meet the criteria outlined in our Email Topic Guide at Outgoing Mail Domains.