Would love to see this occur. Given that I see your idea was submitted in 2018, and now it is 2020, there appears to be little traction by Textra to enable. Unfortunately. Currently, I receive several spam text messages a day with a common word in each of the texts. Filtering on this word would cause this text message to be sent to a spam folder for review or deleted (operator setup options). This feature would be most helpful and I know many people would use Textra for this feature alone!