Don't forget to add your REAL photo in the footer along with links to your social properties, Facebook page(s), Instagram, YouTube channel, website/blog URL, it builds trust.
People love stories and a followup sequence is no exception. Tell a story, how your product HELPED solve this PROBLEM which you were facing before you HAD that product. Progress the story with each followup.
Start emails with a BAD NEWS so people can relate to it, slowly transition that to a GOOD NEWS as your product HELPED in doing just that!
Always press the pain points of your audience, for that you need to know what their problems really are. I do this in one of my followup emails, I conduct a survey asking them the problems/hurdles they're facing.
Take note of their responses, you need to know what's holding them back from succeeding, HELP them by recommending a product/service you PERSONALLY use and love. Never recommend garbage products/services, yeah you can close a sale out of the blue but there are refunds too, if you recommend a product which doesn't provide value, your image also tarnishes in front of your subscribers.
Be honest and money will follow.
Don't SELL, Solve a PROBLEM