I realized today that I'm still getting email from twitter. So I had to log back in and change my preferences then deactivate the account once again. so now it will take another 30 days to get rid of that account.
You would think, in a normal universe, without dark patterns, that an account deactivation and prelim to deletion would automatically sever all communication ties with a service. This also prompted me to run through my mailbox, and while taking care to do it on legitimate sites, I used the unsubscribe link in a lot of email today to get rid of some of the clutter coming at one of my accounts that is solely used for that purpose.
It's a cathartic feeling, cutting the cord on digital junk mail. I can only hope it works to some extent.