DateReminder

Most people miss birthdays not because they don't care, but because a single calendar notification is too easy to dismiss. DateReminder fixes this with persistent hourly email reminders that run from 8am to 10pm on the day of each event.

Add your recurring dates once — birthdays, anniversaries, any day that matters — and get reminded until you've actually done something about it. No app to install, no calendar sync needed. Just add your dates, confirm your email, and DateReminder handles the rest.

Also includes a weekly Sunday digest of upcoming dates for the next seven days, so you're never caught off guard.

Free to use. Works on any device with email or Telegram.