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.

Email Marketing with the Birthday Email

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I love birthdays, even if it means growing older. I recently celebrated my birthday and because I am constantly encouraging segmentation based on subscriber information, I was looking forward to seeing which companies would use my demographic information to target me with a birthday email. Timing Matters Two weeks before my birthday, I received my first birthday email from Sephora with the subject line “Happy (early) birthday, Carly!”. I thought this was an excellent way to not only use my birthday information, but to use it early to cut through the clutter of other emails I would receive on my

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Email Marketing: How to Remedy Poor Expectation Setting

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In a perfect email relationship, both the sender and recipient are on the same page about what kind of email will be sent and how often because proper expectations were set at the point of sign up. Unfortunately, poor expectation setting usually means that your recipients are taken by surprise and unexpected messages are a leading cause of spam complaints (yikes!). Senders with good intentions can easily find themselves in this ugly situation, but we’ve got your back! From our latest webcast Great Expectations: Setting Your Email Marketing Up For Success our email deliverability consultant, Luke Martinez, shared some tips on what to

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Google Inbox: Tips For Email Marketers

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It’s been about six months since Google Inbox stepped out into the spotlight. Shortly after Google made its big announcement, it became clear that email marketers would need to pay close attention. Here are two Inbox features that email marketers should be aware of: Bundles – this allows users to group emails by category, and control when you receive a specific “bundle.” (i.e.: “send me my promotion bundle once a week”) Highlights – this is Google’s version of text preview, giving users the ability to see a flight status, reservation, or picture without opening an email. What this means for

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Blacklisted? Check These 7 Popular Blacklists To Keep Your Reputation Intact

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Earlier this spring, we shared 5 resources that can help you keep track of your sending reputation. Another good way to keep a check on your reputation is to find out if you are on any blacklists (a.k.a. blocklists). Blacklists contain lists of IPs or domains that pose a threat to consumer inboxes. Your email service provider may automatically alert you if you’re added to one, but it’s good to check for yourself. If you are on a blacklist, act quickly. Just a few spam complaints can add a legitimate sender to a blacklist. Here’s an example of what it

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Update on Recent BTC Attack: What Users Can Do To Prevent Attacks

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Yesterday afternoon, the SendGrid account of a Bitcoin-related customer was compromised and used to send a phish, baiting them to transfer Bitcoins to multiple bad actor accounts, promising interest payments. We worked with the customer to help them recover control of their account and to minimize the damage of the attack. This incident was an isolated attack on one SendGrid customer. A NYT Bits Blog post has reported that users of other Bitcoin-related businesses have been targeted this week with phishing attacks via other email service providers as well. SendGrid encourages ALL of our customers to enable two-factor authentication, which can

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How to Open Source Your Code in 11 Steps

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Before you open source a library, there are a few things that you need to do to ensure you’re following all the rules and that the code is ready for the community. Here’s the 11 step pre-flight checklist that we put together internally at SendGrid: Check the code to make sure that no proprietary information like usernames and passwords are present, and that configuration uses environment variables where necessary. Your code isn’t portable if there are hardcoded database names and credentials. Environment variables are convenient and are a secure default. Make sure that dependencies are encapsulated and explicitly declared. People

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TheLadders Have Found that SendGrid “Just Works”

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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

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