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Calendar and contacts

The webmail comes with the address book and the calendar built in. Both are stored in the mail service and run on the open standards CardDAV and CalDAV, so they can also be used in any other program speaking those standards.

The calendar in regfish MailThe calendar in regfish Mail
The address book in regfish MailThe address book in regfish Mail

Contacts in vCard 4 format, with a photo if you add one; without it the list shows initials. They also feed the recipient autocomplete while composing a message.

The week view of the calendarThe week view of the calendar

Views for month, week, day and agenda, with recurring appointments (RRULE) and time zones.

This is where the real gain over separate programs lies:

  • Invitations in mail are rendered as a card, with a conflict check against your calendar and a direct accept or decline.
  • Appointments in running text are detected, German wording included, and can be taken over.
  • A sender becomes an address book entry through add to contacts.

Because both speak CardDAV and CalDAV, contacts and appointments can be used in Thunderbird, iOS, Android and any other program supporting those standards. The data stays the same; the webmail is one view of it, not its only home.