I don't know if this exists (as someone who uses Mint but doesn't know the space well), but I would kill for a service that aggregates and simply reports my monthly bills for me. I don't need Mint's level of granularity and feature parity: I need a service that reminds me about the $5/mo I'm paying on a subscription that I haven't used in two years.
We do this rather well at MergePay (thanks for the mention twofishies) We give you a broad overview of you income, bills, and expenses daily/weekly/monthly and aggregate all your recurring bills and remind you either via email, SMS, or push if you use the mobile app, before they are due. I built it because I had the same issue.