Articles by Warren Duff

Warren is the Content Marketing Manager at SendGrid, specializing in email and content best practices, targeted content generation, and editing blogs, case studies, and guides.

Black Friday and Cyber Monday – Using Data to Gain Email Insights

Best Practices

Black Friday and Cyber Monday are terms nearly everyone is familiar with. The two shopping events kick off the holiday shopping season ahead of Christmas with thousands of stores and online retailers offering limited sales and deeply discounted items. Americans alone are expected to spend $5.7 billion on the two largest sales days of the year. This year, we worked with SendGrid’s Victor Amin, Data Scientist, to look at data from 2014 to see if there’s anything that may be helpful to senders this year. We’ve also provided some tips for senders that are planning on messaging their customers or users around that weekend. What We Looked At To focus this study on Black Friday and Cyber Monday, we concentratedRead More ›

Nudgespot Case Study: Using SendGrid to Power Contextual Email

Nudgespot + SendGrid

Nudgespot is a communications app that is helping businesses send contextual communications to their customers. As a Marketing Solutions SendGrid partner, Nudgespot uses SendGrid to deliver the one-to-one emails their customers need to send. In addition to SMS, push notifications, and in-app messages, Nudgespot provides businesses a platform to send three different types of email: Transactional email – Messages that notify recipients of important account information, like receipts and privacy updates. Marketing email – Messages that are sent to many recipients to promote engagement or make announcements. Triggered email – Behavior-based messages sent to specific users in order to drive revenue. Nudgespot’s customers span a variety of business types—from ecommerce to SaaS, including: Decathlon – A global sports chain withRead More ›

The Strava Case Study: Consistent Changes Create Email Successes


Introduction to Strava Strava is the premier social fitness app that tracks running and cycling activities so that you can track runs and bike rides, compete with friends and other users, and see what your favorite athletes are doing. They began sending transactional email through SendGrid in 2011. Since then, they’ve scaled exponentially, and they continue to use SendGrid’s cloud platform to communicate with their users about different Strava features, including: Kudos and comments on activities within the Strava app Group conversations and updates Challenge completions, follow-ups, and exclusive offers Account sign ups, settings, and notifications Training plan updates and alterations Strava’s Email Marketing Manager, Justin Fritz, notes that email communications are critical to the success of the app and theRead More ›

Doubling Email Volume With 99% Delivery: How Nextdoor is Leveraging SendGrid


Nextdoor is using today’s social media and communications technology to revive local community connections and bring people together. On Nextdoor, neighbors create private websites for their neighborhoods where they can ask questions, get to know one another, and exchange local advice and recommendations. Since its inception a little more than three years ago, Nextdoor has seen incredible growth and adoption. Today, the company provides a communication platform to more than 69,000 communities in the US. “We’ve seen communities alert members of lost pets, dangerous animals, or witnessed crimes. With our partnerships with local public agencies, police forces have come to depend on Nextdoor to get the word out about urgent safety issues. As it has become a go-to communication platformRead More ›

Marketing Email Tips from an Email Insider

Email Marketing

As an email marketer and writer, I’m constantly looking around for good resources. Unfortunately, most of the email marketing tips, tricks, and guides I read are just rehashing the same old stuff: Know your audience Be informative Send at the right time Etc., etc., etc. Honestly, these are the things you should know by now. They should be ingrained in your day-to-day efforts. Where are the applicable, useful things that can be applied today to make an impact on email marketing? Below, I’ve compiled some of the things we take into consideration when creating and deploying successful email marketing campaigns: Read Time All too often, email marketers get absorbed in making a very informational, very attractive message. The problem withRead More ›

SendGrid’s Updated Email API Guide

Best Practices
SendGrid API Guide

In order to help you take full advantage of all our email APIs, we continually strive to release new content and update older resources so that you’re better able to send email exactly the way you want. Over the last couple of months, I worked with members of the SendGrid Developer Evangelist and Support teams to update the SendGrid API Guide. With their help, the updated guide has new information and use cases to help you best take advantage of our webhooks and APIs. SendGrid’s APIs Our APIs have been created to help SendGrid users quickly integrate with our platform, measure various delivery metrics, and expand the capabilities of their account. The API Guide is best suited for newer SendGridRead More ›

TheLadders Have Found that SendGrid “Just Works”

Best Practices

If you’ve ever searched for a job, there’s a strong chance you’ve used TheLadders. Beginning more than 11 years ago, TheLadders ventured into the job site market by providing job seekers with a place they could go to view positions that earned $100,000/year or more. Today, TheLadders aims to help job seekers of all types find the best position possible for them. More than 7 million people are using their site to look for new positions from over 86,000 employers and recruiters. As a result, TheLadders send more than 170 million emails every month, informing people of new jobs. Sending this volume of email isn’t the easiest thing to do, which is where the need for SendGrid came in. When TheLadders started,Read More ›

The Top 5 Code Challenge Posts from the 15 Day Code Challenge

Top 5

Toward the end of 2014, one of our great developer evangelists, Kunal Batra, took on the challenge of learning 15 new technologies and blogging about them in a Code Challenge series. The Code Challenge series was a great way for Kunal to experiment with new technologies and provide readers with some great new tools and introductions to software they may have been unaware of. Now that some time has passed since his last post in January, we’re looking back on the most popular Code Challenge blogs. Below are the top five posts based on number of visits: 5 – Learning Swift – This post is an introduction to Apple’s new coding language. Kunal shows exactly what you need to getRead More ›

Leveraging Local Communication Channels with Balihoo, SendGrid, and Twilio


When it comes to helping national brands like Geico, New Balance, and Ace Hardware leverage the power of local marketing, Balihoo knows that local, targeted email and local phone numbers for people to call are the best tools to use. Balihoo is a local marketing automation company that helps national brands execute marketing campaigns. Their platform provides brands with local communication channels like local websites, search engine marketing, and direct mail. To help them drive email and local phone solutions, they’ve been using SendGrid and Twilio. SendGrid Balihoo is a Marketing Solutions Partner at SendGrid–they’ve integrated their marketing platform with SendGrid’s email deliverability engine to provide their clients with a flexible, cloud-based email solution. Through the application of the SendGrid SubuserRead More ›

Marketing Email vs. Transactional Email: What’s the Difference?

transactional email

If you’ve spent any time on the SendGrid website, you’ve probably seen us reference transactional email and marketing email. Far and away, the biggest question we get from potential and existing customers alike is this: “What’s the difference between marketing email and transactional email?” One of the great things about SendGrid is our versatility. Whether you’re sending a newsletter, coupon, promotion, password reset, account update, or any other email communication, we can help you get those messages delivered. The difference between marketing email and transactional email, when it comes to SendGrid’s platform, is how you send those messages. As we usually explain to the people that call us: With SendGrid, there are multiple ways for you to send email: WebRead More ›

The Top Tech Posts from October

Community, Company, Product, Technical

The SendGrid Blog is designed to be a resource for all the people out there sending email. Whether you’re the founder of a small business, a VP of Marketing at a large company, or a developer working on a project at a hackathon, we want to have content tailored to your needs. For the more technically-oriented readers, our tech posts are written by SendGrid’s fantastic developer evangelists. Whether they’re exploring new code or creating one-off apps, they’ve always got new stuff to show you. Below is a compilation of the most popular technical posts from October: Help Contribute to SendGrid’s Open Source Documentation Matt Bernier, SendGrid’s new documentation developer talks about Documentation. Learn about SendGrid’s Open Source Documentation and howRead More ›

October Recap – The Top 5 Email Best Practice Posts

Best Practices

As an email sender, the best way to ensure your messages are delivered, opened, and engaged with, is to make sure you’re implementing the right email best practices. Below is a list of the top best practice posts from October. Whether it’s implementing great new calls to action (CTAs), tips on how to grow your recipient list, or examples of emails that work, we’ve got you covered: 6 Steps to Grow Your List Authentically Why it’s important to grow your recipient list the right way. In general, you never want to obtain a list, so growing it the right way is essential. Kate provides some great insight and ways to increase your list size, and has created a great SlideShareRead More ›