How To Mark Sendgrid Mails As Not Spam

Sendgrid is a third party application which allows sending bulk emails with flexible send rate unlike Gmail which only allows 10 emails per second, now sendgrid uses its own SMTP so due to that it marks mail as send via sendgrid and for that, all inbox mark them as spam as it looks like its promotional emails.

There are many ways to mark mail as not spam:-

There are some parameters on which your mailing system works like DNS, DKIM, SPF, CNAME.

1) DNS stands for domain name system, this defines your naming by which your application is identified on the network, Flipkart's application server IP is mapped with flipkart.com now any IP mapped with any name is DNS.

2) DKIM stands for Domain Keys Identified Mail, its main working is to help inbox providers to prevent malicious emails, senders, it is done by verifying and validating domains, it works by adding a digital signature to mail header, this is used by receiver email provider to validate the signature by decrypting it and validating it.

3) SPF 

SPF stands for Sender Policy Framework, and it is an email authentication standard which authenticates email by tally actual email IP address of sender with the list registered in DNS records.

4) CNAME

It is a mapping parameter used to map your sender subdomain to the mailing tool domain so that mailing tool uses that subdomain as alias to your domain for sending emails on your behalf, else it will send it on its own behalf, so to mark email as yours you have to mask mailing tool as your your actual mailing.

Now for setting up your sendgrid for non-spam emails follow below steps:-

1) First login to your sendgrid panel.
2) Go to the setting panel.
3) Then click on sender authentication.
4) Go to Domain authentication.
5) click on Get started to Authenticate your domain.
6) select your domain hosting like GoDaddy or any other.
7) Don't do link branding, for now, this does not affect your spamming.
8) Then click on next.
9) Now give your domain name like flipkart.com etc
10) Don't select advanced settings, just click on next.
11) Now 3 CNAME alias will be generated which you have to enter in hosting panel in your case it's GoDaddy.
12) Now, wait for 48 hrs to globally reflect it.
13) Now after 48 hrs your all emails will go to the inbox instead of the spam folder.