In case anyone's interested - it was the me@ filter. I noticed a batch of spammers/scammers whose bulk messages were addressed to me@variousdomains.com Unfortunately google was not able to recognize it as spam and all this garbage was showing up in my Inbox. I added a filter and several days later (not right away!), google started to delete ALL messages individually sent to my e-mail addresses. I removed the filter, will have to keep manually deleting the spammers from my inbox. I think this is a gmail bug.