I like to archive important emails offline. Is there a way to export the data from ProtonMail?
You could use the Bridge to sync your emails with a client like Thunderbird, or even Outlook.
Also it exists an import-export tool. I used it to import my mails from GMail, you may check if it still works: https://protonmail.com/blog/import-export-beta/
Place to discuss and share information about Protonmail.