As part of my (often poor) attempts at marketing, I've built up a database of approximately 2,700 businesses which I email a few times a year with useful info such as tax deadlines, what you need to know, changes to legislation, etc.
Over the years I've gained some clients through these emails so it has definitely been worthwhile. However, with GDPR looming I'm concerned that my database isn't legal because these companies haven't opted in/subscribed to my emails. Am I the only one with this problem?
My question is has anyone ever bought a database from a company and if so who would you recommend?