I use Stripe to manage payments for a subscription site with both monthly and annual options. I have renewal reminders turned off, because it seems like overkill for a monthly renewal – no option to only have it on for yearly plans. I worried about issues with yearly renewals, so I set up my own service to send a renewal reminder for yearly subscribers. I would rather have more customers not renew on friendly terms than deal with surprise charges. And I figure it may prompt some to check and update payment methods or spur them back into actively using the service more.