Think about it. e621 uses a private message system called dmail (stylized as DMail). In the hit 2011 anime steins;gate the main characters are able to send text messages back in time using something called a D-mail. This puts an image in my head that DMail is actually a super high tech futuristic system that magically transports my private messages across cyber space and isn't a totally normal dm-ing feature. Now everytime i see someone say DMail I can hear the steins;gate music inside my head. I can't believe e621 copied steins;gate smh.
I made this post because I've had this thought for like 2 years and I've literally never seen someone make this comparison before and I thought it was kinda funny.