An email provider change affects identity and years of correspondence. For Proton Mail alternatives, trial a secondary address before moving the main domain.
- Import a representative mailbox with folders, labels, attachments, and contacts.
- Test sending, receiving, spam handling, aliases, filters, calendar invitations, and mobile access.
- Review encryption model, recovery options, metadata exposure, and account export.
- For a custom domain, plan MX, SPF, DKIM, and DMARC changes and observe delivery during cutover.
- Keep the old mailbox accessible until important messages and contacts reconcile.
Do not assume two providers' privacy claims imply the same key management or interoperability. Read their documented threat models and recovery paths.
Akousa