: Improve email Delivery Rates Possible Duplicate: How could I prevent my mail from being recognized as spam? I have a web server that sends legitimate transactional email in high

@Reiling115

Usually, I would recommend using a third party service to handle your transactional emails. For the most part, the time you spend worrying about email infrastructure and deliverability are better spent building out your product and working with your customers. Some of the best options are SendGrid, Postmark, and Mailgun. Using one of these services can give you some valuable metrics on deliverability as well, so you can know for sure where your emails end up. That said, here are a few ways you can improve your deliverability rates on your own:

1. Use a spam checkers on all your emails

You should run your emails through one of these services before sending them out. This will check for certain trigger keywords, verify your SPF records and domain keys record are correct, etc. IsNotSpam.com and ProgrammersHeaven.com are two options.

2. Make sure your IPs are not blacklisted

Sometimes the IP address you're using to send email gets flagged as a spam address and blacklisted. You can use a number of tools to check and see if you're on the list. Some of the best ones are blacklistmonitoring.com and www.dnsstuff.com/.
3. Make Sure Your DKIM, SPF, Sender-ID and Domain Keys are Setup Properly

You will want to make sure your email server supports these protocols and that they are properly implemented.

4. Make sure your compliant with CAN-SPAM

If your violating the CAN-SPAM guidelines, you're a lot more likely to have your email flagged as spam and therefore end up in the black-hole spam filters. More details on that here



In the interest of full disclosure, I work for SendGrid as a devloper evangelist.

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