Mail Server
Here you can set your own mail server. If you do not set this, the local standard Postfix setting will be used. All templates of the standard Pocketbase e-mails can also be changed here, e.g. to comply with a corporate design.
Cardfile does not make any default settings here.
Sender name
Sender name, which is displayed in the e-mail client.
Sender address
E-mail address of the sender. Make sure here that the lower account also has the corresponding rights to use this e-mail. Otherwise your e-mails could be blocked or end up in spam.
Use SMTP mail server
Here you can set up your own mail server.