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Deliverability

Everything you need to start building connections that matter.

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Email authentication: What you need to know about DMARC, SPF, DKIM, and BIMI

Sometimes the world of emails can seem like a digital Wild West; with scam bandits, fraudsters, and phishers lurking behind every whiskey-stained saloon. However, armed with the right tools and knowledge, you can don the proverbial sheriff's badge and...

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Understanding new sender requirements: A fireside chat with Yahoo & Google

Now that we’ve officially rolled into 2024, it means Google and Yahoo’s email authentication changes are coming into effect. But what does this really look like for email senders? How is it going to impact you directly? And what will need to be implemented to...

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Hermes wonders about emails

Email headers: What are they and how to read them

Hands up if you heard someone talk about email headers but had no idea what they were. Or, even worse, maybe your technical team asked you to send them the full header of your email, and you’re frantically looking for it everywhere. In this post, we’re going to tell you...

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Breaking down a DMARC record: What it is and how it looks like

DMARC authentication is hard – we know it. For many email senders, the technical complexities of DMARC are just enough of a headache to put it off until it becomes an absolute must in the world of email. Well, that time has come. Gmail and Yahoo have...

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What is DMARC and how does it work

Mailbox providers have gotten pretty good at spotting – and eliminating – dangerous, unwanted emails. But some spam still gets through. These messages have the potential to do damage to both individuals and companies. That’s why email authentication has...

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Deliverability tips to avoid the spam folder this holiday season

The holiday season is almost upon us, which means marketers – especially those in retail – will soon start to increase their sending frequencies and will also widen their nets to reach out to as many contacts as possible. At Sinch Mailjet, we expect to see very high...

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Why email deliverability issues will ruin the customer experience

You know that feeling when you’re anxiously waiting for an important package to arrive, but it doesn’t show up at the time you expected or maybe even needed it? That's frustrating. Many of your customers feel the same way when deliverability problems prevent email...

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Gmail and Yahoo’s 2024 inbox protections and what they mean for your email program

As marketers, we should be the first to care about sending valuable, relevant emails to our contacts. Ultimately, email’s efficiency as a marketing channel depends on our recipients’ overall inbox experience. More unwanted emails mean more competition and less...

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What is the Gmail automated unsubscribe feature?

Ah, email, the final communication frontier. From the early days of AOL to today’s large-scale email-related services, clients, and more, it has undoubtedly changed our lives and evolved over the years. One of those email actors leading the way when it comes to...

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Hermes delivers email to a Greek goddess

What do marketers need to know about email deliverability?

What does the term “email deliverability” mean to you? The truth is...there’s a lot more to it than simply getting messages delivered. If you think of email deliverability as the best practices you follow to avoid the spam folder and blocklists, you’re getting closer. But...

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How to avoid email spam filters

So, you're sick and tired of hearing about your beautiful emails landing in spam? We're glad you checked in. If you’re responsible for your organization’s email campaigns, you’re probably constantly thinking about how to avoid spam filters, spam words, and always...

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Unsubscribe link: Why it’s critical for your email marketing campaigns

We’ve spoken many times about building a contact list as one of the main steps in your email marketing strategy. We have also often repeated how important it is for you to have a clean list. In fact, you’re probably a bit tired of hearing all about it by now. We get it. But...

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Hermes delivers a letter to Hera

Gmail Promotions tab: A guide to optimize email delivery

The Gmail Promotions tab’s hot debut in 2013 caused mixed reactions. Some marketing pundits predicted that it marked the end of email marketing as we know it. Others were less dramatic and just stated that it would have a negative impact on the opens and clicks of...

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Email file sizes: How big is too big?

Bigger isn’t always better for email marketers – especially when it comes to email file sizes. Trying to stuff large images or send big HTML files can hurt your email engagement and deliverability. So how big is too big for email file sizes? Is it time you put your email...

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Single vs. double opt-in: Which one should you use?

If you’ve been using single opt-ins for a while, the idea of double opt-ins may seem a little daunting. You’re effectively doubling the number of steps a user takes before their added to your lists. And this can be a little scary for most email marketers whose KPIs are...

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DKIM setup: How to create, configure, and set up DKIM in 3 easy steps

You didn’t become an email marketer because you wanted to dive into complicated code all day. Ugh. And when you hear all these weird sounding acronyms like DKIM, SPF, and DMARC, your first instinct is probably to run for the hills. But then, when you encounter...

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Buying email lists doesn’t guarantee improved results

When your business is just starting out, you want to feel as if you’re doing all you can to grow your customer base. Stories like Harry's gathering 100,000 email signups in one week are inspiring, but they can pressure you to frantically check how to grow a contact list...

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Hermes and Hera in front of the mailboxes

Noreply email address: Best practices for your email strategy

Have you ever tried to contact a brand to get them to stop sending you emails, only to get back an automated reply that says your email failed to be delivered? If you have, you’ve met the villain of our story: the noreply email address. Noreply addresses are the brick...

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Hermes wearing a mask sits on a sofa and spies emails

Email spoofing: How brand impersonation really works

Celebrity impressions are hilarious. Who doesn’t love a good Sean Connery or Marlon Brando impersonation? But when bad actors impersonate your brand through email spoofing, it’s no laughing matter. Because email is such a personal and trusted...

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Email list cleaning: Complete your chores before playtime

If we take a trip down memory lane (some of our lanes might be longer than others), we might remember our parents telling us if we didn't tidy our bedroom or help clean the dishes, we couldn't play with friends or go to a movie. Let's face it, none of us wanted to...

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What is the return-path and why do you need to customize it?

Have you ever heard of a return-path? If you haven’t, maybe you are missing one thing that you...

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8 ways to avoid ISP Blocklist

The Internet Service Provider (ISP) blocklist is probably your worst nightmare. Ending up on the blocklist is like having your domain name and IP address kicked out of the club, dropped from the mail server, and locked behind a firewall. (Plus, they threw away the...

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How to handle SPF and the 4 steps to create an SPF record

Do you find dealing with email spammers feels like playing a game of Whac-A-Mole? When you whack one, two more pop up in its place. With spammers, when you find a way of...

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Email throttling: An optimization guide

Have you ever started an email campaign, only to receive error codes time and time again? The doomed “message not sent because of server error”? It may not seem harmful, but...

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