Diabolos is pretty terrible
I've completely turned off tells cause I was sick of having to constantly wipe and repopulate my blist

From the instant I login I'll get a tell like every 3 minutes from upwards of 4 different companies, and they'll go on for literally hours if you don't blist them. The automation in place to catch spammers is either non-existant or so terrible that it may as well be.