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.

SMTP and Email Deliverability

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The following is part of series of guest posts from Windows IT Pro that takes an in-depth look at SMTP. Last week we shared the first in a series of posts on the history of Simple Mail Transfer Protocol (SMTP) from our friends at Windows IT Pro. The first post explained the origins of SMTP and how it’s influenced how we email today. It ended by saying: The use of IP means that we can depend on SMTP to eventually get the message contents to a server, but what happens to it after that is up to the server. Imagine

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Why Effective Email Marketing Is More Than A Big Subscriber List

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The following is a guest post from Josh Bland at TechnologyAdvice. Jillian Wohlfarth, Senior Manager of Content at SendGrid, was a recent guest on the TechnologyAdvice Expert Interview Series to share her insight on the intersection of sales, marketing, and technology. The series, which is hosted by TechnologyAdvice’s Josh Bland, explores a variety of business and technology landscapes through conversations with industry leaders. She sat down to discuss major email marketing trends and challenges, including deliverability, spam reporting, choosing the right content, and using data as a compass for email strategy.   Below are a few highlights from our conversation:

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Seasonal Email Marketing Inspiration

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Seasonal marketing isn’t just for major holidays like New Years, Fourth of July, and Thanksgiving. It also covers holidays like Father’s Day. Our email inspiration today comes from our customer Fitbit, who’s showing Father’s Day some love with their email marketing! The email below not only follows many of the best practices we preach (clean design, one call to action, easy unsubscribe, and more), it also employs two powerful email marketing techniques: urgency and incentives. Urgency By using the subject line “ENDS TODAY: Free Shipping for Father’s Day!” they immediately grab the attention of the recipient. I know I received

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SMTP and the Evolution of Email

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We worked with our friends at Windows IT Pro to take an in-depth look at the history of Simple Mail Transfer Protocol (SMTP). The following is a guest post from their team that covers the origins of SMTP, the evolution of email, and what SMTP does, and doesn’t do. SMTP Defined The Simple Mail Transfer Protocol (SMTP) has a name that perfectly describes its origin and intended purpose. SMTP was built to be a lightweight, easy-to-implement means to transfer plain-text messages between devices. The original SMTP standard distinguished between a mail transport agent (MTA)—what modern administrators would call a server—and

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New City, New Office, New Opportunities: SendGrid in Redwood City

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We invite you to join us at our new Redwood City office for a tech meetup happy hour on June 25th at 6pm. Come meet some great people and get a glimpse of the bold new features and products SendGrid is bringing to email. In early April, SendGrid opened a new 5,775 square-foot office in Redwood City, California. The office, a block away from Caltrain, features many collaborative areas, an open bullpen environment, new 27-inch Macs, electronic standing/sitting desks and our favorite, two massive murals, by our own Chelsea Hart, who was just featured in The Denver Post.   Office Highlights This new

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Email Marketing 101: Strategy Tips

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Merriam-Webster defines strategy as “a careful plan or method for achieving a particular goal usually over a long period of time.” We created our most recent SlideShare around helping you construct your email marketing strategy because it is a longterm game, and we understand it can be easy to get caught up in the details and lose sight of the bigger picture. We structured our deck around SendGrid’s mantra: Send the right message, To the right person, At the right time, With the right frequency. We shared some helpful “final thoughts” at the end of the deck (slides 32-36) that I

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In-App Email Simplified with Appery.io & the New SendGrid Mail API Plugin

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The following is a guest post from Max Katz at Appery.io. Learn more about Max at the bottom of this post. SendGrid is one of those services that makes adding in-app email capability way too simple. SendGrid is a provider of a cloud-based email solution and provides an elegant and easy-to-use REST API to send emails from a mobile app. It is very likely that your app needs to send emails, such as registration confirmations, password reset emails, two-step verification emails, general notification emails, or any other type of email communication. SendGrid is the perfect solution. Appery.io, the most complete mobile and web

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