If you are doing a SaaS a lot of time you have to run cold emails, these emails will be sent to the prospects and based on this you will get leads for your SaaS.

Now in emails, we often check for these things,

1. MX Records

2. DKIM Records

3. DMARC Records

4. SPF Records

5. IP Address Blacklist

Based on these 5 parameters, it determines whether the email you are sending is from how good is the reputation and the chances that it will not land to SPAM.

This can be a challenging process and with DKIM and IP Blacklist you have to collect data and do some research, thus for my campaigns I use this tool: https://mxvalidator.com/

It's API first which means I can run a Python Script to simply validate all my email addresses in the CSV. This makes the work much easier and faster to do.

API Documentation: https://rapidapi.com/consultwithshiv-consultwithshiv-default/api/email-records-mx-dkim-spf-dmarc-txt-smtp