Hello,
I'm curently working as email campaign expert for the worlds 3rd wholsaler, and I'm able to help you setup your targeted campaign.
My work is with Optivo email system, which is similar to any other mass email system, so it won;t be any problem for me to do this job for you.
Tergeted communication is base of my work, and I'm also doing some light template modifications for my company, so if you are interested I can help you set up campaign and do this job.
Click tracking is also easily done, so you will have history for later usage, like contacting customers that clicked only on certain section of email, customers that never opened email and so on.
Also just to give you idea, 2000 customers is our test base :)
Best regards,
Dusan