Send grid is sharing emails very slowly

If you're new to sendgrid, you'll see a delay in sending of mails as the company analyses your traffic. It's a policy. About mails going to spam folder, I can help you look into the problem there. It can be because of Reverse DNS setup, SPF or DKIM configuration. Let's chat to discuss more.

i can optimize the mail server to make sure that mail is properly delivered, and can implement ssl or other services so that the mail wont go in to spam i can complete code in one day