How to NOT end up in Gmail promo folder?

Promo tab is there for a reason. Promotions.

If you are sending email promotions, marketing material it's ok to be there.

Don't be selfish. That is useful for mail users. When I see an email not ending up in their own tab, I explicitly move them there.

Primary tab is for direct communication, not for marketing or newsletters. If your direct mails drop on others' promotions, that means you failed on seperating your marketing and personal mail account. Keep your marketing material seperated and use your personal mail for its purpose. Direct communication.

How do you know they're ending up there? It's supposed to be a combination of a bunch of stuff, that can include:

• subject line + email body (avoiding spammy words)
• how warmed up your domain/inbox ends up being
• bunch of other stuff

I feel like an existing article from an authoritative source can better explain: https://snov.io/blog/how-to-avoid-gmail-promotions-tab/

Are you sending from a gmail address or your own domain? Need to send from your own domain using paid google workspace or zoho or other similar email hosting etc with spf dkim and dmarc setup correctly

Use more texts and avoid common templates. Helped me.

Ask them to reply back to your email...then you'll always end up in primary.
That's the best trick but also complicated cause you gotta think about a way to do it!