The best feature I like about cert hat are its automatic renewal reminders that notify me when my certs need renewed, this really helps cut down the amount of time I have to spend in renewing them manually every year. Sometimes it might take an odd amount of days before I receive email notifications from cert hats when renewal dates are approaching. So if anyone's hoping to avoid manual certificate renewal then maybe consider using cert hats as their auto-renewal tool (or even better yet let's say use both so you don't miss out). Automating certificates expiration date maintenance has saved us hours of work each month! Great way to maintain our public keys and prevent loss.