Kanary is a grant recipient from YC and does data deletion as well. Main difference from Optery is simplicity of the tiers (there is only 1 premium tier that covers all sites + hands on support). While Optery's b2b tooling is more built out than ours.

We have a 'downgrade to a free tier' option if you are paying and want to take a break from the service. We delete all data if you decide to cancel, but you can join back any time. If it's not clear from the username, I'm on the team.