I have several "largish" email lists in the niche I am in. I acquired them all through double opt in ...or they are customer email lists who bought products from me in the past.
I have been developing a product for the past 2 years and haven't emailed them or kept a relationship really (stupid, I know!). Some may have totally forgotten who I am (most probably have actually).
The thing is, I will be launching this new product pretty soon and the lists I have were interested in related products 0-3 years ago and were extremely targeted to my new offer (so I'm sure at least some will still be interested in my new product).
I know no matter what I initially email this list, a lot will just think - who the heck is this and unsubscribe... BUT how would you recommend I reengage as many subscribers as possible ...and then get them to buy my new product?
I appreciate any helpful advice, links to resources/templates, or past experience with this sort of thing that anyone may have?