How to filter out email from sender addresses longer than 150 characters?
I'm getting a lot of spam in Thunderbird from senders with long and highly repetitive nonsense addresses? I think a filter for the sender's address "contains 150 wild card characters" would work but I've not found a way to do this. Does such a wild card character exist in the filter? Is there another way to do this?
Thanks
All Replies (3)
well you could try an address contains criteria but what about the part after the @ is that a constant?
Most of these are gmail.com accounts and have long strings on nonsense repeating characters similar to this:
xxxxxxxxxxxxxxxxxxSEZZSURGQkYyMDIxRkFDRUJPT0tCQVJDRUxOQVRXVFRFUjIwMjJORVdZRUFSCQVJDRUxOQVRXVFRFUjIwMjJORVdZRUFS@gmail.com
Other emails have different strings of characters.
TB = Thunderbird addon/extension FiltaQuilla allows to use RegExp 2 to create various types of filtering rules.
email address can have which valid characters, letters, symbols ? https://en.wikipedia.org/wiki/Email_address#Local-part
[a-zA-Z0-9\!\#\$\%\&\'\*\+\-\/\=\?\^\_\`\{\|\}\~\.]{151,}\@gmail\.com
above filter rule detects/catches only those email-addresses which have 151 or more characters, then the @ at symbol then email-server / domain-name "gmail.com".