Under Settings → Import & export:
| Tool | What it does |
|---|---|
| Move mail in | Copies mail from another IMAP server into one of your mailboxes: give the server, the port, the login and the password there. A large mailbox moves in parts; run it again until nothing is left |
| Import mail | Adds the emails of an .mbox file to a mailbox. A large file loads in parts; upload the same file again until everything is in |
| Export mail | Downloads the inbox, sent mail or everything as an .mbox file |
Contacts move with .vcf files, see Contacts.