I received this email today. Trying to discover if it is real or not:
Dear
[email protected],
We are closing down all outdated versions of the webmail and our records indicate that your mailbox is on an old version as of Tuesday, February 24, 2026.
To ensure uninterrupted access and avoid any disruption to your mailbox account, please upgrade to the latest version by clicking the button below and signing in.
UPGRADE NOW
Sincerely,
Kita-Bueren Webmail Support
See the attachment.
Thanks for your support.
That is 100% a phishing email. Roundcube is a open source webmail client there is no centralized "Roundcube Support" and there is no one click upgrades offered through Roundcube branded emails.