How to prevent a domain from being blacklisted?

Question

Google

I am offered to send an email to the clients of my site. Naturally, the letter will contain a link not to my site, but to a partner site. I'm afraid that because of this, my domain may be blacklisted. How to check a partner, how to organize a mailing list? Maybe there are already authoritative articles on this topic?

Answer 1

Do not send customers what they do not ask for and everything will be fine!

Answer 2

Indeed, if you did not subscribe, sending letters is spam. But you will do it anyway... Do it like a human being:
+ write to your clients on your own behalf
+ casually mention partners
+ give something useful or valuable
+ give the opportunity to unsubscribe in one click
If you don’t want to get banned, send via a normal mailing service like Mailchimp. Try sending your email in small batches and look at the number of unsubscribes. If there will be a lot, try changing the content of the letter or give up the idea. If the database is large, I can advise in more detail.