I'm trying to send a Bulk Mail Merge - is there a way to route this through an email other than my own? This is intended to be a mass communication to our contacts, but it's coming from my individual email..

there is no way to control the sender email address with that tool. You could go to Home / Set Preferences and temporarily change your email address there. Alternately, you could use a workflow to send the emails. From there you can define the sender.

you could send it as a Marketing Campaign.