Remove Duplicate Messages

Z 4 z 5 gwězdkow pógódnośony

wót Warren Dodge dnja Junij 12, 2016 · trajny wótkaz

I used this addon to sort through years of backups to reduce them to a set of email without duplicates. Worked great except: It would hang and I finally found the one message that caused it. I need to submit a file to be checked as to why.