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Clear and Clearwire.net
As of April 15th, Clearwire will no longer support their CLEAR Email/Clearwire Email services which include @clear.net and @clearwire.net mail domains. They were acquired by Sprint and these domains will bounce after April 15th 2015.
Many thanks to Anthony Chiulli from Salesforce for the tip.
It's the recipients
Most delivery problems to US ISPs boil down to sending mail to people who don’t want it or expect it. Sure, we do technical audits and find issues with how companies are sending mail. But all the technical correctness in the world isn’t going to make up for sending mail users complain about or don’t interact with.
Recently we were working with a client who was having some delivery problems for one mail stream. As we dug down into the issue, we discovered a couple things about the mail stream.
Purchased Lists and ESPs
After some thought, I’ve decided to remove a few ESPs from this list based on personal experience with them allowing customers to send to purchased lists. If your company has disappeared and you want to come back, you’ll need to actually stop the spam coming from your network. Every company that’s been removed has received a complaint from me specifically mentioning the address was purchased and allowed that same customer to continue spamming the same address. Deal with your spam and we can talk about reinstatement.
Read MoreiCloud Postmaster resources
iCloud Mail (mac.com, me.com, icloud.com) has a shiny, new postmaster resources page. No whitelist, no FBL, just a good list of best practices to follow for sending bulk mail.
Read MoreWhat is the Mail From field?
When emails are sent, there are two from fields, the Mail From and the Display From address. The Display From address (technically referred to as RFC.5322 from address) is the from address that is displayed to the end user within their email client. The Mail From (technically referred to as RFC.5321 from address) is the email address to which bounce messages are delivered. The Mail From field is sometimes referred to as the Return Path address, Envelope From address, or Bounce address.
It may seem confusing to have an email with two from fields, but knowing the difference is important to properly setup your SPF records.
Taking a look at this email I received from GoPro, the Return-Path (5321.From) goes back to @bounce.email.gopro.com. If I were to reply to the email, the message would go to @email.gopro.com. The Display From (5322.From) address is gopro@email.gopro.com.
I would want to add the email address GoPro@email.gopro.com to my address book because that is the email address that is displayed in my email client. The reason why the Return-Path is different from the From address is because GoPro likely has an automated system that will process the bounce back messages (sent to @bounce.email.gopro.com) and automatically flag or unsubscribe those email addresses. This allows GoPro to setup automatic processing of the different mail streams sent to them, one stream being the bounce backs after a mailing and the second being an automated customer service system.
Where does SPF fit in?
SPF checks the Mail From (5321.From) address, not the Display From (5322.From) address. In the example above, there should be an SPF record for the subdomain of bounce.email.gopro.com. I can check the SPF record using our Authentication tools http://tools.wordtothewise.com/spf/check/bounce.email.gopro.com and I receive the following results:
Checking the headers shows that GoPro does have a SPF record setup and the message was authenticated with SPF.
For SPF records, make sure the SPF record matches the Mail From (From.5321)/Return-Path domain name. Have your recipients add the Display From (From.5322) email address to their address book so they will continue to receive your mailings.
4 things spammers do legitimate marketers don't
I’ve never met a spammer that claims to be a spammer. Most that I’ve met claim to be legitimate marketers (or high volume email deployers). But there are things spammers do that I never expect to see a legitimate marketer doing.
I’ve written about these things throughout the blog (tag: TWSD), but it’s probably time to actually pull them together into a single post.
Four things to check before your next mailing
Like many bits of technology, email is often set-and-forget. Everything is checked and rechecked during setup, and then no one goes back and looks at it again. But mail programs are not static, and people make changes. These changes don’t really break things, but over time they can create their own set of problems.
Setting aside some time every quarter or even every year to check and make sure all the bits of mail are configured correctly is a good idea.
April 2015: The Month in Email
We started the month with some conversations about best practices, both generally looking at the sort of best practices people follow (or don’t) as well as some specific practices we wanted to look at in more depth. Three for this month:
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