• First, you may have the options to remove duplicates and/or ignore deleted mail checked which would result in fewer messages in the target mailbox. Your source email client may have duplicate messages in its mailboxes causing the mismatch of the email message count.
• Secondly, some mailboxes get corrupted at the place which marks the start of the next message (the email delimiter) in the mailbox. If that line is corrupt, the next message in the mailbox may be considered part of the previous message, resulting in fewer total messages.
• Thirdly, the index file (such as *.idx, *.toc) may be corrupt causing the mismatch of email messages.
• Lastly, Aid4Mail attempts to correct some corrupted mailboxes which often also causes an email message count difference.

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.