SendGrid's Email Deliverability Blog


From email deliverability best practices, to hackathon highlights, API tutorials, and everything in between, the SendGrid blog is your destination for all things email. Browse our most recent posts in the main feed or filter by category. Be sure to subscribe to the blog to get a daily digest of posts and reach out to us in the comments to let us know how we're doing.

CASL Checklists: Are You Abiding By the Law?

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Over the past few years, the email community has kept up with the progress of the Canadian Anti-Spam Legislation (CASL). Since CASL went into effect (just over a year ago on July 1, 2014), the Canadian Radio-television and Telecommunications Commission (CRTC) has been able to prosecute any companies not abiding by the requirements of the legislation. Starting on July 1, 2017, the law will also allow individual email recipients to pursue damages directly from senders for not complying with CASL laws. With the knowledge of this impending right-of-action, and the fact that the CRTC has already pursued a few companies for CASL

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What Is and What Isn’t an IP Warm Up?

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As an email marketer, you’re most likely not a stranger to the term “IP warm up.” In this blog I’ll explain exactly what IP warm up is for those who are unfamiliar with the term, and I’ll explain exactly what it isn’t for those who are. Why do we warm up IPs? Unfortunately, the need to warm up IP addresses is mostly the result of a tremendous number of bad actors who abuse the medium of email to send recipients content and messages they didn’t agree to receive. The result of this is that inbox providers inherently (and necessarily) distrust unfamiliar senders. Because

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Sending a Welcome Series with Threads

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The following is a guest post from Sean Harding at SendGrid Labs. Below, he’ll share some more information about triggered email service, Threads. Built on top of SendGrid’s world class email delivery service, Threads is an extremely flexible and powerful way to engage customers with triggered emails (e.g. a welcome series to a new customer). We introduced some of Thread’s capabilities last week on the blog, but would like to share a more specific example today. One of the easiest and most useful ways you can start leveraging Threads triggered emails is a welcome series. A welcome series is a

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Two New Email Segmentation Techniques

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If you’re an email marketer and you haven’t adopted some sort of address list segmentation strategy, you’re way behind the times. Just a few years ago, list segmentation simply meant splitting your mailing list into a few parts based on demographics: women get these messages, men get these messages, east-coasters get these messages and west-coasters get these messages, etc. These days, recipients still expect personalized content that caters to their interests, but there are two segmentation strategies that take the concept of targeted sending up a notch: Target your openers first… As an expert email marketer, you should know which

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200 Billion Emails. A Billion Recipients. Introducing, “The Data Science of Email.”

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Big data continues to change the way marketers engage their customers and email plays a critical role in the evolving big data landscape. Email marketing in particular can be significantly more effective when big data sets are analyzed under the trained, critical eye of a data scientist. Today we’re excited to introduce a thought leadership video series that is spearheaded by our very own senior data scientist and the head of our big data team, Dr. Aaron Beach. Beach spends his days at SendGrid in the data trenches—and he’s uncovered some key insights related to email engagement. He’s decided to

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Gmail Postmaster Tools: What You Need to Know

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Our friends at Gmail recently announced Google’s new Postmaster Tools dashboard. (Thank you, Google!) Like the release of their Spam Feedback Loop a year ago, it eliminates a blind spot in the email ecosystem. It gives qualified high volume senders visibility into key metrics that help them improve the quality of their email campaigns and troubleshoot deliverability hiccups. SendGrid has been using Google’s Postmaster Tools for a while now and the data is incredibly valuable. It helps our delivery consulting team quickly identify root causes of deliverability difficulties, and our anti-spam team uses it to identify customers that sent unwanted

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Threads (Beta) Now Available. Start Engaging with Triggered Emails.

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The following post comes from our friends at Threads and SendGrid Labs, a division of SendGrid. Learn more about Threads and how it can impact your email program below. Today is a special and exciting day for Threads. In just a few short months, we’ve grown a product inception into an intelligent triggered email service we’re proud to put our name on. This was no small feat and we could not have come this far, this fast, without the support of SendGrid’s email delivery platform. As of June 30th, Threads is in public beta and graciously accepting new signups by the

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