You can use Gogole Bard or ChatGPT4 to get your emails written. I use this prompt:
Write me an email that will never fall to a spam box, promoting a product about "YOUR NICHE"
Use {{ firstname }} for her name.
Don't use spam words. Use similar words.
Make them wonder about it and click the link.
You won't use the products name.
How's it going? Any success?