Function to mail an issue to an arbitrary user

We'd like an action on each issue to mail the issue to a user, without reassigning the issue, with a note attached to the issue. It would be great if there was an option to append this note as a comment on the issue, as in:

"Mailed to <user> on <date>

<note>"

Frequently we just want to alert someone to the pressence of an issue or gently remind them to look at it again, without requiring them to watch or assign the issue.