MailShift

Convert email archives between formats. MBOX to EML, batch processing, preserves attachments and metadata.

MailShift converts email archive files between formats on your Mac. Import MBOX files from Apple Mail, Thunderbird, or Gmail Takeout and convert them to individual EML messages. All attachments, headers, and metadata are preserved. Processing happens entirely on your device — no emails are uploaded anywhere.

Available on theApp Store

Features

MBOX to EML Conversion

Convert MBOX archive files into individual EML messages. Each email becomes a separate file you can open in any email client.

Batch Processing

Drop multiple MBOX files at once. MailShift processes them all and organizes the output by source file. Handles archives with thousands of messages.

Preserves Everything

Attachments, inline images, headers, timestamps, sender info — nothing is lost in conversion. Forensically accurate output.

Private and Offline

All processing happens locally on your Mac. Your emails never leave your device. No cloud, no account, no tracking.

Frequently Asked Questions

What formats does MailShift support?

MailShift converts MBOX archives (Apple Mail, Thunderbird, Gmail Takeout) into individual EML files that can be opened by any modern email client.

Can it handle large archives?

Yes. MailShift processes archives with thousands of messages efficiently. It runs natively on Apple Silicon for maximum speed.

Are my emails uploaded anywhere?

No. All conversion happens locally on your Mac. Your email data never leaves your device.

Is this a one-time purchase?

Yes. Pay once, use forever. No subscriptions or recurring fees.

Download MailShift

Convert email archives between formats. MBOX to EML, batch processing, preserves attachments and metadata.

Available on theApp Store