Reminder to mark as solution

Sometimes people forget or simply give up on getting an answer for something asked a while back. Maybe I got the answer by myself and forgot to provide it to the community.

X days after the last answer received in a post I started that has not a "Mark as Solution", I should receive a reminder to:

• pick a solution;
• give more information;
• mark as no longer needed.

It's not a big deal. Support sends very frequent mails asking for inputs.

My suggestion is one 1 month after and a second 3 months after. They can even be grouped in a single email (on the 1st of March a summary of January pending questions).

(And a date filter so you don't bomb everyone with 300 emails related  to 10-year-old posts)