BACKUP BEFORE MIGRATION
Bring your mail.
Keep a safe copy.
Prepare exported messages without changing a mailbox.
Development tool: test exports only until independently qualified. Files are processed in this browser, never uploaded. This does not yet migrate into a server or back up your existing destination mailbox.
Create an encrypted backup
Choose exported .eml files. Original message bytes—including attachments—are preserved without rendering their contents.
Up to 100 files · 2 MiB each · 10 MiB total. PST and MBOX are not supported in this first slice.
Use a unique passphrase, not your mailbox password. Keep it separately: Alien Tech Services cannot recover a lost passphrase.
Reopen and verify
Select the backup you saved. We decrypt it and check every message checksum before offering recovery or migration preparation.
Verification confirms the selected exported files—not completeness of your original mailbox, folder mapping, flags, contacts or calendar.
No files loaded. No mail server is connected.
Verified export recovery
Downloaded .eml files are unencrypted. Save them in a private location; messages and attachments remain untrusted.
Migration preflight
Clearing or closing this page releases its working data. Browser/OS memory is not guaranteed to be securely erased. Keep the original exports and at least one separate backup copy.