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.

How I Value Open Source (Part 1)

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This article is a personal look at Open Source, and how I value it. Part 2 will be a deeper dive into Open Source. Its true values, success stories, horror stories, licenses, and much more. Make sure you come back to read that one! I gave a talk last week at WXG 2014 on “The Value of Open Source.” This topic is something near and dear to all of our hearts here at SendGrid, and was definitely an eye opener for me; revealing a lack of Open Source uptake in the developer community. Around 1/3 of my audience didn’t embrace Open Source

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The Top 7 Tech Posts of August and September

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Our tech posts are written by our developer evangelists as a way to inform readers about some of the great things they are doing. Oftentimes, this means hacks they’re working on using SendGrid, events they’re attending, or how they’ve used SendGrid with another great piece of tech. Over the last couple months, we’ve tracked our most popular technical posts, and we’ve compiled them here. Check out what people have been reading and learning about: 1. The SendGrid Ruby Gem and My Mama! by Eddie Zaneski – This introduction to the new SendGrid Ruby library also features a hack that Eddie created

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SendGrid Gives Back

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2014 has been another year of growth for SendGrid. We have seen growth in our email volume, growth in our company size, and growth in our commitment to giving back to the community. Whether it’s through diversity initiatives or through our new Accelerate.EDU program, we’ve been focusing a lot on enriching our tech, startup, and local communities, and our team members as well! Each year, we encourage our now 250+ full time employees to use one full working day as a “community day.” For these days, employees are able to donate their time for a cause that’s close to their

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OneNote and SendGrid’s Event Webhook

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SendGrid will let you know, in near real-time, when emails fail to reach your customers. But what do you do after you have that information? Do you have a plan? With this simple app, you can automatically create follow-up actions in Microsoft OneNote, right as email failures occur. In this blog post, I show you how to use Flask (A Python Microframework), hosted on Microsoft Azure, to capture messages regarding email failures sent from the SendGrid Event Webhook. We then create OneNote pages, that contain follow-up actions, based on the particular email failure. Prerequisites This code was developed using Microsoft

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SendGrid and Sendwithus: A Video Tutorial

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In June, we happily announced a partnership with email optimization and segmentation company, Sendwithus. Sendwithus is a premium template service that enables your marketing team to take more control of email and allows your developers to focus more time on your application. As part of this partnership, all SendGrid customers receive Sendwithus’ “Starter” plan for free. To provide some more detail on how to set up your free account with Sendwithus and how you can access their email templates to send transactional, drip, and segmented emails, we asked Matt Beers from our Support team and Matt Harris, CEO at Sendwithus

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SendGrid <3 Students

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Here at SendGrid we are huge advocates of community. Therefore, when John Britton reached out regarding joining their new student initiative, Student Development Pack, we all got suuuuper excited!     SendGrid’s Accelerate.EDU Package Today’s students are building the next generation of innovative apps and we want to help provide them with the tools they need to succeed. Offering our services, mentorship, or just a friendly high five (we have an unlimited amount of these!) are just a few examples. So joining GitHub’s new student initiative was a no brainer. We want to help the next generation of students build something awesome.

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Email Reputation 101: IP Reputation vs. Domain Reputation

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Email deliverability is influenced by a lot of factors, including signing your mail, keeping clean lists, sending wanted content, having a good sending reputation, and much more. Your sending reputation is how ISPs identify you as a legitimate sender. Every time you deploy an email campaign, you are providing them with valuable data that says whether or not you follow proper sending practices. There are two types of email reputation—IP reputation and domain reputation. Let’s take a look at the difference between the two and why paying attention to both is important. IP Reputation Email is sent from IP addresses,

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