several times recently my eMail Contacts list has corrupted and takes ages to sort it out. Shame I love this programme also want to copy contacts to a new phone and spent 5 hours trying to do it to no avail!!
Which version of eM Client are you using?
How would you like to synchronize your contacts (via hotmail, Google or iCloud)?
What kind of error messages do you get?
Can you show a screen shot of how the ‘corrupted contacts’ look like?
Hi Peter, are you using IMAP with your account? What exactly is the issue, as Hans suggested could you maybe provide a screenshot of this issue?
What mail service are you using?