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Whitelisting website email so it is not rejected as spam

What are the processes I need to go through to make sure emails sent from my web server are not rejected as spam? This question is for legitimate site emails that members have requested like a daily newsletter which is generated and run in a nightly process, as well as confirmation emails.

Some of the ideas I've heard are:

  1. Making sure the server sending the mail has reverse-dns lookup turned on.
  2. Manually submitting a whitelist request to major ISPs.
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Micah B. Avatar asked Apr 13 '10 12:04

Micah B.


People also ask

How do I stop my email from being rejected as spam?

Here is a list of things you can do to prevent your emails being rejected as spam: Write to one person, No CC, No BCC, No Additional recipients. Address the person properly at the beginning of the email "Dear Clive" rather than "Hi m8". Avoid a deceptive subject line.

What does it mean to whitelist an email domain?

What is an email whitelist? To whitelist an email address just means you add them to your approved senders list. This tells your email client that you know this sender and trust them, which will keep emails from this contact at the top of your inbox and out of the junk folder.


1 Answers

Ok, I spend a couple hours this morning researching the answer to this question and here's what I discovered.

DNS Setup

  1. Ensure forward and reverse DNS lookup is enabled.
  2. Ensure web server has a static IP address.
  3. Add a SPF Record

Email signing:

  1. Sender ID
  2. DomainKeys
  3. DKIM

Major whitelists

  1. ReturnPath.net
  2. Goodmail

Conversations with major vendors

  1. Yahoo
  2. Google
  3. AOL: aol.com, cs.com, netscape.net
  4. MSN: Hotmail, Live.com, MSN (uses ReturnPath.net certification)
  5. United Online: Netzero, Juno
  6. Verizon
  7. AT&T: att.net

Other helpful information: Deliverability.com



Here's some good info if you're looking to off-load this to a provider:

https://stackoverflow.com/questions/3746213/sendgrid-vs-postmark

https://stackoverflow.com/questions/4798141/sendgrid-vs-postmark-vs-amazon-ses-and-other-email-smtp-api-providers

like image 129
Micah B. Avatar answered Oct 08 '22 10:10

Micah B.