best practices

Gmail has long pushed for adoption of email authentication best practices from email senders, effectively making it tough to get to the inbox without proper email authentication in place. They also, for years now, have been very cautious about what mail they accept over IPv6, declining to accept mail over IPv6 that fails authentication checks. Well, now those same checks now apply to all mail sent to Gmail — over IPv4 or IPv6. Meaning, if you want to send mail to Gmail, you need to authenticate that mail with Domain Keys Identified Mail (DKIM) or Sender Policy Framework (SPF).If you’re trying to send mail to Gmail subscribers, and the mail doesn’t authenticate properly, it’ll be rejected with this error message:550-5.7.26 This mail is unauthenticated, which poses a security risk to the sender and Gmail users, and has been blocked. The sender must authenticate with at least one of SPF or

In North America, autumn means several things—kids going back to school, cooler temperatures, and pumpkin spice everything! It’s also the time Apple introduces its new products and hosts its software showcase. This year, Apple introduced to us a new iPhone, updated products, and iOS 17, the newest version of their mobile operating system. iOS 15 […] The post Apple iOS 17: New Features & What It Means For Email appeared first on SendGrid.

Discover hundreds of Cyber Monday email subject line templates and examples to inspire your email campaigns. The post 121 Cyber Monday Email Subject Lines to Boost Open Rates appeared first on SendGrid.

Using an Email API can help connect an app or service to an email service provider without the heavy developmental lift. Learn more about email APIs. The post What Are Email APIs? appeared first on SendGrid.

When you send as much email as we do at Twilio SendGrid, you see a lot of highs and lows. And in our experience, one thing will always be true: if your company sends email to your customers, bad actors will be searching for an opportunity to use your good reputation with inbox providers to […] The post I’ve Been ATO’d! What to Do After an Account Takeover appeared first on SendGrid.

We ask a lot of our customers—so we need to give thanks for their support. Here are thank you email campaign examples to send your customers. The post Thank You Email Campaign Examples (Downloadable Templates) appeared first on SendGrid.

Did you know there are new state laws that impact email senders? Learn which states have new email privacy laws before you get fined. The post How the New State Email Privacy Laws Affect Senders (2023) appeared first on SendGrid.

Learn 21 different email types and tips and examples for sending each. Learn more about product, privacy, event, educational, and promotional emails. The post 21 Types of Emails Explained (With Tips & Examples) appeared first on SendGrid.

If you’re regularly monitoring your email open rates and other engagement metrics, you may notice that a segment of your email list never even opens your emails. The following post includes tips that will help you pull together a re-engagement email campaign quickly, effectively, and gracefully. The post How to Create Effective Re-Engagement Email Campaigns appeared first on SendGrid.

Learn about how you can optimize your email send times to increase yout open rates, recipient engagement, and overall email deliverability. The post The Absolute Best Time to Send an Email Campaign in 2023 appeared first on SendGrid.