Even though I have "paperless" enabled, Charles Schwab sends me a paper letter for every stock transaction I do in one of my accounts. Especially in conjunction with fractional shares, this leads to a lot of wasted paper and effort.
I've been tempted to do a bunch of 0.01 share transactions to see if I could overwhelm them into giving up on paper transaction confirmations.
I sent a GDPR request to Barclays a year or so ago. It took them a while (not within the 30 day deadline), but eventually they got back me. One day a heavy overnight shipped package arrived, and inside were A5 print outs of all previous communications they had ever sent me. Around 500 pages in total.
It didn't actually have information about what data they store in the databases, so they didn't actually fulfil my request. I figured it's not worth the trees to try and chase it up more....
I've been tempted to do a bunch of 0.01 share transactions to see if I could overwhelm them into giving up on paper transaction confirmations.