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.


SPOILER ALERT: Cloudmark’s 2013 Global Messaging Threat Report Findings About SMS Spam

Best Practices
Email to SMS

While your email program is humming along, spammers are still hard at work trying to devise ways to send malicious messages to your customers. Mobile is now the new frontier for these elusive thieves, allowing them to be even more creative in their approach, and according to Cloudmark’s 2013 Global Messaging Threat Report, they are making good progress. It’s important Read more ›


Check Spam Using the Parse Webhook

Technical
Key Practices to Avoid the Spam Folder

One of my favorite parts of SendGrid is our Parse Webhook. It’s a great tool that enables your applications to receive incoming email. One of the lesser known features of the API is the spam_report and spam_score parameters. Every time your application receives an email through the Parse Webhook, SendGrid uses SpamAssassin and generates a score and report based on Read more ›


10 Tips to Keep Email Out of the Spam Folder

Best Practices
spam

At SendGrid, we are very serious about email deliverability. We live and breathe it each day. Similar to how Google keeps adjusting its search algorithm to provide the best results, we must also regularly adjust to ensure your non-spam email gets delivered. In this post, we offer advice to help you make sure that your emails get delivered. Of course, Read more ›


Why Do Notification Emails Get Treated as Spam? [Infographic]

Best Practices, Company, Product
Notification Email Spam Thumbnail

Why do bad things happen to good email? Users miss notification emails like friend requests and password resets because they get filtered as spam. Why does this happen and what can you do about it? Transcript of Infographic Via SendGrid: Making transactional email easy for developers everywhere. Why Do Notification Emails Get Treated as Spam? You’ve built an awesome app. Read more ›


A Honeypot is Just a Sweet Word for Spam

Best Practices
Honey Pot

Honey PotIn the IT world, honeypots have a number of definitions depending on its usage, but with email, a honeypot means one thing – a trap. Honeypots are inactive email addresses set up specifically as a tool to catch spammers red-handed as these emails are not used by real people and therefore never opted-in to any email campaigns. As a result, any mailer that sends to these addresses can be dubbed a spammer. Read More ›


Webinar: Tips and Tricks to Stay Out of the Spam Folder

Best Practices, Company, Events
elmer-thomas

Staying out of the spam folder is tougher than you might think. Over 20% of legitimate email never makes it to the inbox. Customers quickly become frustrated when they don’t receive important messages like password resets, purchase confirmations and shipping notifications. Join email experts Carly Brantz and Elmer Thomas on May 29th at 1:00 PM EDT as they break down ways to make sure your email stays out of the spam folder.

This webinar will cover: Read More ›


Why Legitimate App Email is Mistaken For Spam

Best Practices, Product
Why Legitimate App Email is Mistaken for Spam

Do you ever get reports from your customers that “this email” or “that email” was never received? Chances are, your answer is an emphatic “Yes”, but rest assured – you’re not alone. In fact, the open “secret” of email communications is that nearly 20% of legitimate email is never delivered to the intended inbox. Overall, more than half of all email sent is considered to be abusive or illegitimate. So, what do these unfortunate statistics have to do with your business?

Read More ›


5 Key Practices to Avoid the Spam Folder

Best Practices
Key Practices to Avoid the Spam Folder

According to MAAWG’s Email Metrics Report released in November 11, almost 90% of the emails included in their study were considered to be abusive. Spam and other malicious emails continue to plague customers, ISPs and legitimate senders so to ensure your emails get delivered to the inbox, you have to follow a few key email best practices.

  1. Focus on your sending reputation. ISPs look at your sending behavior to make filtering decisions. If you have a good sending reputation, your emails will get delivered, but if not, your emails may end up being blocked at the gateway or labeled as spam.
  2. Regularly monitor your email deliverability.  Rectify delivery failures right away, otherwise you risk harming your sending reputation. Access tools that that not only tells you who responded to your messages, but who actually received them. This data can also help you better understand your overall analytics and identify gaps in your email program. Read More ›