nsgoyat
Thank you for reply.
Yes, I always use Sendgrid API with Post SMTP Mailer (aka Postman) plugin and working very, or Mailpoet premium
But I thought setup Sendmail tutorial from WordOps docs is for the server/system?
When logged in to the server I see the text "You have new mail" But I didn't receive anything so I think need setup an external SMTP for it?