[alecsmart1]

This may not work very well for out of organization contacts. But for inside organization contacts it works beautifully. They know youre spamming them but its like a reminder service for them (which they unfortunately wont do on their own).

[Ntrails]

We use Lync (msn messenger) internally and if someone hasn't responded to an email I ping them on that, ring them up, or even wander over and chat depending on our relationship.

There are plenty of folks I know with 100+ unread emails this week and a bunch of them will never get seen. So imo another email isn't the most effective way to resolve it.