Are there file size limits that need to be taken into account when exporting mail?

Yes, there are file size limits to take into account when exporting mail. If you have a large amount of mail or many large attachments, the target file receiving your messages can end up being very large.

Outlook 2003 and 2007 can store up to 20 GB of data in a single file using the Unicode PST format, and Outlook 2010 up to 50 GB. Older versions of Microsoft Outlook create ANSI PST files that are limited to 2 GB in size. Note that the PST size limit may be set smaller through registry settings (see the Microsoft Knowledge Base). Some email clients cannot read generic mailbox files that are larger than 4 GB. An Aid4Mail ZIP archive can easily exceed 20 GB; in fact the maximum file size is limited only by your system’s resources.

Please check with the email provider you are migrating to in order to ensure your file will not be too large to transfer. If your email provider does have a file size limit, you can set a threshold value in the "Limit File Size" field on the "Target Settings" screen.


If you experience any issues, please don't hesitate to contact us.

If you would like to buy an Aid4Mail license, please visit the Aid4Mail website.

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