To export data from Mailfence, you can follow these steps:
2. Account -> Back-up:
3. Click on Export after choosing an element that you want
- For exporting a specific email: Right-click on the message in the message list panel -> Archive -> Download.
- For exporting a specific document: Right-click on the document -> Download.
- For exporting a specific calendar event: Right-click on the calendar event -> Export.
- For exporting a specific contact: Right-click on the contact -> Export (vCard).
For exporting your OpenPGP keypair(s)/other public keys, please check this article.