Microsoft Outlook application crashing when sending email. The Windows Event is displayed below and reads, "Add-in execution error. Outlook crashed during the 'ItemSend' callback of the 'ApplicationEvents' interface while calling into the 'Outlook Addin' add-in."
Release : 15.8
One of the Exchange accounts in Outlook has become corrupted causing the Outlook plugin to crash.
Remove the corrupted account from Outlook and attempt to send email again. The crash should no longer occur.