Unlock The Inbox has developed a FREE chrome extension that allows you to quickly analyze any website you are visiting for email deliverability. The extension quickly checks to see if that website is listed on any blacklists or whitelists and has any MX, SPF and DMARC records set up in DNS.

Below is an image of the Email Deliverability Checker extension in action:


Each of the results see above, if clicked, will take you to our website and perform a more detail analysis.
 
You can download the extension in the Chrome Web Store: Here

Source: Unlock The Inbox