You switched away from IncrediMail years ago, but your old messages are still locked in its IMM files, and your new email program can't open them. IncrediMail Converter Pro is a stand-alone Windows utility built to get those messages out and into formats other programs understand.
Quick facts
- Platform: Windows (the vendor lists Windows 7, 2003, XP, 98, Vista, 95 and 2000)
- Output formats: EML, PST, MBOX
- Price: $49 for the full Pro license
- Trial: a free demo is available. The previous listing text says it converts 10 emails.

Key features
Convert IMM files to EML, PST or MBOX
The vendor says it is the only utility that exports IncrediMail messages to all three formats. That covers most destination clients.
Convert many IMM files in one pass
The bulk conversion option processes a group of IMM files together, so you don't have to run them one at a time.
Keep attachments with their messages
Attachments are saved along with the emails. You need the attachment files or folders to sit alongside the IMM files.
Keep formatting, headers and read status
The tool retains the original email formatting and header details such as To, Cc, time and date. It also restores the read and unread status of each message.
Who it's for
It suits you if you have an old IncrediMail mailbox and want to move it to Outlook, Thunderbird or another client. It also suits you if you simply want an archive in a standard format like EML or MBOX.
Pros and cons
- Pro: three output formats from one tool.
- Pro: a free demo lets you test before you pay.
- Pro: keeps headers, formatting and read status.
- Con: the demo converts only a limited number of emails.
- Con: it is Windows-only.
- Con: attachments only come across if the attachment files are kept with the IMM files.
FAQs
Which formats can I export to?
EML, PST and MBOX.
Can I try it first?
Yes. A free demo is available, and the full Pro license is $49.
Will my attachments come along?
Yes, as long as the attachment files or folders are kept with the IMM email files.
Does it keep read and unread status?
Yes, the vendor says it restores the read and unread status of emails.
System requirements
The vendor lists compatibility with Windows 7, 2003, XP, 98, Vista, 95 and 2000. Older listing details mention a Pentium II 400 MHz, 64 MB of RAM and 10 MB of disk space.