Area: The synchronization works without errors, but...
Problem: I’m polling the e-mails from two computers and they appear again.
This happens when you are using the option “Leave Messages on Server.” Easy2Sync for Outlook correctly synchronizes the e-mails, but the second Outlook does not recognize that it already has the e-mails and downloads them a second time.
Simply turn the mentioned option off. You will not need it anyway since you are now transferring e-mails by synchronizing them.