[jsalh]

Is there a way to flag an email by using an extension or third-party app?
It's difficult to keep track of important emails that I'd like to follow up on later without flag function.
What I do is make important mails "unread" again, but it's not a perfect solution because you have to later distinguish between "unread" important mails and unread unread mails.

When I go into the inbox (where all the emails are listed) and keep my finger on a particular email - a pop up menu will appear that includes the "Set Flag", "Complete Flag", and "Clear Flag" options.

I am currently on Mightyrom with 6.5, and I am pretty sure this feature was also on the stock TP2 rom.