Always use professional email rather than free email for sending mass emails/newsletters. Free email providers like Gmail, Yahoo etc will mark your email as spam by default. My delivery rate jumped from 20% to 80% just by making a switch in email sender.

By professional, do you mean Mailchimp or Sendgrid?

That's a service provider for sending emails. I am talking about the email that will show up as sender. A custom domain based email.

@millions-ice-83302 Can you clarify? So earlier you sent emails via: john@gmail.com and now you are sending it via: john@somedomain.com ?

Yeah. If you use Gmail as sender email. It gets marked by default as spam for large numbers. Recently learned this. @loud-glass-33663

Gotcha. Thanks 👍