Do you know any way that won't let Gmail mark any of my mail spam?

Thanks for the article. Do you know any way that won't let Gmail mark any of my mail spam?

Unfortunately, it looks like you need to manually add the email to your whitelist so it doesn't go to your SPAM folder.

You can check out this article on why emails go to SPAM folders sometimes: https://optinmonster.com/11-reasons-why-your-emails-go-in-the-spam-box-and-how-to-make-sure-they-dont/