Webmail
Panelica ships Roundcube as its webmail, reachable two ways: through the panel itself, and through a webmail.<domain> address on each mail-hosting domain. Users log in with their full email address and mailbox password; there is no separate webmail account to manage.
Email → Webmailhttps://YOUR-SERVER-IP:8443/email/webmailTwo front doors
Through the panel: the Webmail page's Open Webmail button launches Roundcube at the panel's own HTTPS port, by default at /email/webmail (the path is configurable in Email Settings, and the panel picks up a changed path immediately). This works out of the box with the panel's certificate.
Through the domain: every domain that hosts mail also gets a webmail.<domain> vhost on the customer web server, served over HTTPS with the domain's own mail certificate. That address is what you give end customers: it looks like theirs, and the certificate matches.
webmail.<domain> vhost only appears once the domain's mail SSL certificate exists, because the certificate is issued with multiple names in one certificate: mail., webmail., autoconfig. and autodiscover.. The vhost serves Roundcube through PHP-FPM 8.3 from the panel's isolated services tree, redirects HTTP to HTTPS (keeping the ACME challenge path open for renewals), sends the usual security headers, and denies access to Roundcube's config, temp, logs and vendor directories. Every write is atomic and tested with nginx -t first; a failing config is rolled back rather than deployed. On Cloudflare-managed domains, the webmail, autoconfig and autodiscover DNS records are created automatically, DNS-only so mail protocols are not proxied.What users get
Standard Roundcube: mail, folders (the Sent, Drafts, Trash and Junk folders the panel pre-creates for every mailbox), an address book, and message search. Roundcube sends outgoing mail through the local Postfix submission port with the user's own credentials, so webmail mail is authenticated and DKIM-signed exactly like mail from a desktop client; if you switch the server to an SMTP relay, webmail follows automatically.