Forum Discussion
Outlook Classic freezes mid sending
One of my users keeps getting this bug whenever he's sending his flow of mails (aprox 114), where outlook would just freeze and won't send them. First time it happened, it also gave the "memory full"...
Run Outlook in Safe Mode (outlook.exe /safe) and test sending the same batch. If it works normally, an add-in is likely causing the problem.
Check the size and health of the OST/PST file. Large or corrupted data files can cause Outlook to freeze during send/receive operations. Microsoft lists damaged data files and oversized mailboxes as common causes of Outlook hangs.
Some e-mail provide, limit the amount by day os send.
Check whether the messages contain large attachments. Processing many emails or large attachments at once can significantly increase Outlook resource usage.