It's weird, but watching those email alerts actually got me reading more fanfic, not less. Before I set them up, I'd just lurk and maybe check a tag once a week if I remembered. Now, when a notification for my favorite rarepair pops up, it's like a little jolt of excitement right in my inbox. I click through immediately, which means I'm reading stories when they're fresh and the comment sections are buzzing. That's led to me actually talking to authors and other readers in the comments more often, because everyone's there at the same time.
I've noticed I feel more connected to the fandom's daily rhythm this way. You see which tropes are trending in real-time, who's posting a lot, and you can jump into discussions while they're hot. It's turned my reading from a passive, solitary thing into something a bit more social. The downside is I check my email way too much now, obviously. But seeing that 'You have 1 new subscription update' never fails to give me a little hit of dopamine.