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Breaking News: Full-featured Aid4Mail 5 now available!

Rewritten from the ground up with a new UI and up to 6x faster. Adds support for OST, OLM and Mimecast files. Offers powerful filtering with Gmail/O365 search operators, custom processing with Python scripts, simplified licensing, and lots more.

Click on the download button to get the free trial version of Aid4Mail 4.7.

Don’t worry, this isn’t a dumbed-down version. In trial mode, you get to test all Aid4Mail’s features, with just a few limitations, which are removed once a license is purchased and the product is activated:

  1. A trial mode screen is displayed for 8 seconds each time you start the wizard.
  2. Processing is limited to a maximum of 50 messages per mailbox.
  3. A numbered trial tag is added to the subject line of exported messages.

Aid4Mail offers an option to run performance tests on an unlimited number of emails during trial mode. For instructions, see the “How can I run performance tests?” FAQ on the right.

And there’s absolutely no risk.

  • Aid4Mail is delivered in a quality installer that doesn’t make any irreversible changes to your system.
  • All its files are copied together under the folder of your choice.
  • You can easily uninstall Aid4Mail at any time by using “Add/Remove Programs” in the Windows control panel.
  • Aid4Mail makes no changes to your source messages unless you specifically instruct it to delete them after conversion (only possible through a command-line switch).
  • Operating System : Aid4Mail runs under Windows 10, 8, 7, Vista, XP, Server 2019, 2016, 2012, 2008 and 2003 or Linux in conjunction with Wine. Both Windows 32-bit and 64-bit are supported.
    Windows 2000 / NT4 / ME / 98 / 95 should work but are not officially supported.
  • Internet : Online license activation, validation, and re-activation require an internet connection (offline activation option available with Aid4Mail eDiscovery editions).
  • Hardware Requirements : 64 MB of RAM, 12 MB disk space. Pentium (or compatible) processor.


Latest Aid4Mail Update – v4.7

February 6, 2020

• Updates EULA to include FAR clause for U.S. Government end users.

• Updates root folder search feature for latest versions of Mozilla Thunderbird.

• Fixes issue when loading Exchange Public folders.

• Fixes issue when appending email to a PST file under the 64-bit edition of Outlook.

Update 4.64

May 21, 2019

• Adds workaround to several errors sometimes produced by IMAP servers, notably Yahoo! Mail.

• Updates OpenSSL to version 1.0.2r

• Using the plain text Export Format with conversion to ANSI unchecked now produces all email in UTF-8 encoding. This makes it possible to correctly render all email characters when viewing in a text editor.

• Fixes issue when exporting to PDF using an Export Format based on rich contents and plain text.

• Fixes several command-line switches failing in Aid4Mail Console under specific conditions.

Update 4.63

May 28, 2018

• GDPR update for license management system.

Update 4.62

February 22, 2018

• Adds workaround when converting HTML emails in Eudora mailboxes have an invalid charset value (like unicode or utf-16).

• Missing emails on source IMAP servers are now counted as skipped "missing" messages instead of "unpurged" messages.

• The Aid4Mail Migrator GUI (wizard) can now run from a USB key. Please contact our Help desk if you need assistance.

• Fixes issue causing failure to extract attachments from Outlook 64-bit source mail (PST, MSG, profile) during conversion.

• Fixes rare issue skipping files with just an extension and no name (e.g.: "C:\Temp\.msg").

Update 4.61

January 23, 2018

• Adds workaround when converting HTML emails in Eudora mailboxes have an invalid charset value (like unicode or utf-16).

• Missing emails on source IMAP servers are now counted as skipped "missing" messages instead of "unpurged" messages.

• The Aid4Mail Migrator GUI (wizard) can now run from a USB key. Please contact our Help desk if you need assistance.

• Fixes issue causing failure to extract attachments from Outlook 64-bit source mail (PST, MSG, profile) during conversion.

• Fixes rare issue skipping files with just an extension and no name (e.g.: "C:\Temp\.msg").

Update 4.6

November 15, 2017

• Fixes issues with character encoding when converting mail to recent Outlook 2016 updates.

• When activated, now shows activation code in the Aid4Mail About box.

Update 4.51

September 6, 2017

• Aid4Mail 32-bit edition: Includes a work-around for a Microsoft Office bug that appeared after the release of Outlook 2016 build 7967.2161. This bug causes Aid4Mail to crash when converting email to Outlook with the “Use MAPI RFC 1521 Converter” option set. As of this writing, Microsoft still hasn't fixed the bug (Outlook version 16.0.8326.2096). The work-around will ignore the “Use MAPI RFC 1521 Converter” feature if it detects an Outlook build with the bug.

• Aid4Mail 64-bit edition: If you are using the Outlook 64-bit edition of Aid4Mail with Outlook 2016, it may crash when you convert to an Outlook target format (PST, MSG, profile). In this case, please visit this knowledge-base page for a solution.

• Fixes an issue in the final count details. Under certain circumstances, the “messages analyzed” count is doubled and the excess is added to the “filtered” count.

Update 4.5

June 14, 2017

• New license management system for Aid4Mail Migrator. To activate this type of license, select the Aid4Mail Migrator option on the start-up trial screen and then click the Activate button. Fill-in your license details in the dialog box that pops up.

• New Aid4Mail Console command-line parameters for the Aid4Mail Migrator license:
Use the /LicenseCode switch to specify the Aid4Mail Migrator order number, which serves as the license activation code. If a security key has been defined in the license control panel, use the /LicenseSK switch to provide its value. Use /LicenseStatus to check if the specified license is valid or not.

• Introduces two add-on products for Aid4Mail Migrator to top-up number of sessions and duration of maintenance.

• Improves performance and significantly reduces memory requirements of Aid4Mail Console Launcher.

• Fixes a scaling issue when running Aid4Mail Console Launcher under high DPI resolution.

• Fixes an issue in Aid4Mail Console with the /m switch failing to register under certain circumstances.

• Fixes an issue in Aid4Mail Console with the /MD5name switch causing parameter misreading under certain circumstances.

• Several other minor improvements and fixes.

Update 4.3

February 6, 2017

• Adds following HTTP Request Methods (GET, POST, …) to scripting language:

URL.delete(URL[; Data])
URL.get(URL[; Data])
URL.patch(URL[; Data])[; Data])
URL.put(URL[; Data])

Use this feature to communicate with Webhooks (Zapier, IFTTT, Slack, …). The URL format supported by these commands is as follows:

• Updates Regular Expressions engine (based on PCRE 8.40).

• Updates OpenSSL to version 1.0.2j.

• Fixes an issue creating PST files with a size limit when using Outlook 64-bit.

• Several other minor improvements and fixes.

Update 4.2

December 28, 2016

• Sets the Aid4Mail interface to French when it’s installed on a system using Windows in French.

• Adds an option to process a message store connected to an Outlook profile that is different from the default store. This can be an online archive, a public mailbox, a delegated email account, or other type of mail store.

• Adds in Aid4Mail Console and Launcher an option to process multiple message stores connected to a source Outlook profile.

• Improves conversion of mailbox files created by German editions of Qualcomm Eudora.

• This update includes several minor bug fixes.

Update 4.1

November 28, 2016

• Adds compatibility for latest Apple Mail mailbox format (EMLX files).

• Fixes issues affecting recent Outlook 2016 updates.

Update 4.0

October 21, 2016

• Adds an Aid4Mail edition that is compatible with Outlook 64-bit.

• Aid4Mail Migrator, Forensic, and Service offer email notifications to keep you informed of progress while offsite.

• Aid4Mail Console adds support for migration/conversion settings stored in a CSV file.

• Bundles “Aid4Mail Console Launcher” with “Aid4Mail Console”. This new tool lets you migrate accounts concurrently and can cut down processing time by a factor of 5 or more.

• Restores folder structure from Gmail Takeout files.

• Adds an option to receive timely license renewal reminders by email.

Update 3.9

March 10, 2016

• This update includes several minor bug fixes.

Update 3.8

October 30, 2015

• This update adds support for Outlook 2016 (32-bit edition).

Update 3.75

September 15, 2015

• This update adds full support for Google Takeout and Google Vault mbox files, including recovery of email status information (unread, deleted, etc.). It also improves the processing speed of Backupify mbox files. See WhatsNew.txt (installed with Aid4Mail) for more details.

Update 3.7

July 14, 2015

• This update includes the latest Regular Expressions engine (based on PCRE 8.38). It also fixes a recent mbox parsing issue (regression) that could result in two emails merging into a single target email. A number of other improvements and fixes are listed in the WhatsNew.txt file installed with Aid4Mail.

Update 3.6

February 24, 2015

• This update fixes several issues related to Outlook 2013 and improves the conversion of Mac folder names.

Update 3.5

November 18, 2014

• This update improves finding the location of Outlook 2013 PST files. It also handles folder structures better on Lotus Domino servers.

Update 3.4

September 4, 2014

• This update includes a fix for the OpenSSL Heartbleed bug. Additional improvements include 1) better detection of invalid message delimiters sometimes present in Thunderbird mbox files and 2) better conversion of Draft messages from other programs to Office Outlook.

• Earlier updates add options to locally save emails and attachments that fail to upload to an IMAP server. As a result, you preserve all the data that is rejected by the IMAP server. For example, if an email exceeds IMAP’s size limits, Aid4Mail can remove its attachments, save them locally, and then try uploading again.

• Note that Yahoo! Mail now requires secure access using the SSL protocol. The server port should be set to 993. Also, does not support folder names longer than 30 characters.