Category: Best Practices

Data is the key to deliverability

Last week I had the pleasure of speaking to the Sendgrid Customer Advisory Board about email and deliverability. As usually happens when I give talks, I learned a bunch of new things that I’m now integrating into my mental model of email. One thing that bubbled up to take over a lot of my thought […]

No Comments

Gmail Postmaster Tools for Senders

Google announced new postmaster tools for senders sending to Gmail.  The Gmail Postmaster Tools are to help “qualified high-volume senders analyze their email, including data on delivery errors, spam reports, and reputation.”  The updated postmaster pages also include Gmail’s best practices for bulk senders. Postmaster Tools by Gmail Update: ReturnPath has a blog post […]

1 Comment

Set expectations for new subscribers

A common way to build your email address list is to provide a free resource such as an eBook or PDF in return for contact information from the reader.  While this is a good way to be mutually beneficial to the reader and the company, often the reader is providing their information only for the […]

No Comments

When to include a physical address

One of the requirements to be CAN-SPAM compliant is to include a physical address within every promotional email that is sent. If your company hires a third party to send email on your behalf, your physical address should be clearly visible within the message when the message is selling your products and services. There is […]

No Comments

Whois privacy protection

I’ve talked about using privacy protection on domains in the past (here, here, here, here, and here). Short version (if you don’t want to check all the old links) is that privacy protection for commercial domains is bad, that’s what spammers do and legitimate email marketers should not hide domains behind privacy protection services. I still believe all of […]

1 Comment

Testing your opt-out process

When was the last time you tested your opt-out process? Did you just click the unsubscribe link to see if the page loaded? How did you confirm the email address was unsubscribed? If you have a Gmail account, Gmail allows you to use unlimited aliases. For example, if your Gmail email address is, you […]

1 Comment

On Father’s Day

I’m on quite a few mailing lists for companies whose main product is sending gifts: food hampers, jewelry, flowers, overpriced desk toys and so on. They tend to ramp up their volume before appropriate holidays such as Christmas, Mother’s Day, Thanksgiving, Valentine’s Day or Father’s Day and target their promotions to those particular holidays. One […]

No Comments

Image Blocking

I received this email earlier this week, an email that I wanted but this is how it arrived. The email contained a single image link, a text line of who the message was sent to, the senders name, address, and finally an unsubscribe link. Good news, the email is CAN-SPAM compliant! Bad news, I have […]

No Comments

PTR Records

PTR records are easy to over look and they have a significant impact on your ability to deliver mail without them.  Some ISP and mailbox providers will reject mail from IP addresses that do not have a PTR record created. PTR records are a type of DNS record that resolves an IP address to a […]

No Comments

Yahoo Mail Deliverability FAQ Updated

Yahoo has updated their FAQ and listed out a number of factors they use to determine if a mail message is spam. IP Address Reputation URL Reputation Domain Reputation Sender Reputation DomainKeys Identified Mail (DKIM) signatures DMARC authentication Autonomous System Number (ASN) reputation Autonomous System Number (ASN) is a globally unique number that is assigned […]

No Comments
  • Ongoing Yahoo delays

    I've been hearing from folks over the last few days that they're seeing an uptick in deferrals from Yahoo! The deferrals are not uniform. ESPs report they're seeing some, but not all, customers affected. Other ESPs aren't seeing any changes. It's not just you. But it would be very worthwhile to dig into engagement and other stats. It's possible this is a new normal at Yahoo! and they're tightening filters to catch mail that doesn't fit their standards but was previously difficult to filter.No Comments

  • AOL starts using Sender Score Certification

    Good news for Sender Score Certified IPs. Return Path recently announced that AOL has joined the list of ISPs offering preferential treatment to certified IPs.  1 Comment

  • iCloud Service Disruption

    40% of iCloud users were affected this morning during a service disruption between 2:15AM and 9:30AM. Apple System StatusNo Comments