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How ISP Rate Limiting Is Ruining Your Relationship

We need to talk. 

I think we need some space. I like you, but I need time to process our relationship. 

If Internet Service Providers (ISPs) like Gmail and Hotmail could talk, sometimes they might sound just like this. There are plenty of reasons why they might put on the brakes and begin to limit the rate at which they accept email (i.e. rate limiting). But why do ISPs rate limit senders? And how can you respond without landing in the digital dog house? 

Matt Rideout
By Matt Rideout
on August 7, 2017

Transactional Email Speed: A 30-Day Experiment

Has this ever happened to you?

I love aged Sumatran coffee. It's often marketed as a Christmas blend, so it can be particularly hard to find in spring and summer. So when our resident coffee guru pointed a particularly tasty version, I jumped on it. After ordering my pure caffeinated gold and closing out the order confirmation page, I realized that I wasn't 100% sure that I'd ordered the right grind.  I went to check the confirmation email, and saw....nothing. As I waited the ten seconds for it to show up, I had a  thought: with transactional email, time literally is money. The faster that confirmation email comes in, the better the odds of the customer following through and completing their transaction. 

Ten seconds can feel like a major delay in today’s digital age, and each additional second it takes to deliver an email increases the risk of a lost sale, an abandoned account signup, or a confused customer placing a double order. How fast is your email? 

What Is a Bounce Processor, and Why Does It Matter?

I love eggs.

Fried, scrambled, poached or boiled, they're one of my favorite foods. But as we all know, eggs are fragile, and not every egg makes it to the table (or even to the frying pan).

In the same way, not every email makes it through to its recipient. Lots of things can go wrong: the recipient's email address may be entered incorrectly, the ISP that hosts the email account could be having technical issues, or a spam filter could be blocking the message from getting through.

Advanced Email Throttling: Three Essential Tools for Sending Success

Ready for the spotlight?

Even though I’ve been playing for several years now, I’m still pretty much a novice whose focus is on learning the basics. I do sometimes dream about becoming a legendary banjo player, but in reality, I know it would take a lot to make it to the next level as a professional musician. More practice, more exposure within the music industry, maybe a few new banjos...er, tools for the business. And then there’s talking it over with my wife…

In my last post, I gave you the big-picture basics of email throttling—to continue the banjo metaphor, I showed you how to strum along with some simple chords. But today, I’m going to show you how to master throttling using a world-class instrument—GreenArrow. It can be a bit tricky to get the hang of, but once we’re done you’ll have the skills you need to be a virtual email throttling superstar.

Email Throttling Basics: What You Need to Know

One of my favorite hobbies is practicing the banjo.

And while my wife is a good sport about it, there’s only so much she can take. If I am down in the basement where she can’t hear me, I can play until my fingers fall off. But if she is within earshot of where I’m practicing, I only get to play for a short time before she flat-out tells me to stop.

My wife’s taste for banjo music is a lot like Internet Service Providers' (ISPs) taste for email. After a certain point in the sending process, certain ISPs may stop accepting emails. And just like with my wife, it doesn’t make sense to continue with delivery attempts because the ISPs will just get more and more annoyed. You can think of throttling, at least in GreenArrow, as our way of preventing you from annoying the ISPs (and having to sleep on the proverbial couch as a result).

Three Ways To Warm-Up Your IP Addresses (& Keep Them Hot)

There you are. The great outdoors.

The tent is pitched. Marshmallows, graham crackers, and Hershey's chocolate sit nearby as your friends and family gather near the fire pit. You’ve got the firewood, kindling, and matches, but the only heat you’re feeling is that of embarrassment because try as you might, you can’t start the fire.

GreenArrow's Documentation Site—Now With Unified Search & No Bacon?!

We're happy to announce — greenarrowemail.com/docs!

Our new software documentation site is the culmination of months of brainstorming, development, organization, conversion, documentation review, excessive coffee consumption - and yes, bacon. (The GreenArrow "old-timers" will know that "bacon" was the password to our old documentation site. See the sidebar.)

What SMTP Replies & Enhanced Status Codes Mean (& Why You Should Care)

It’s that time of year again.

That time where you may not be fully listening to your accountant. Sure, you can see her lips moving, but just can’t understand what she’s saying. You know it’s important and that it should matter—it’s your money, after all. But sometimes it's easier to totally space out, especially when they start talking way over your head.

Email Injection Speed vs Delivery Speed: Which One Is Slowing You Down?

Email is complicated.

If you’re an email marketer or have worked with email servers, you already know that sending email is a complicated process with a lot of moving parts. Unless you know your stuff, it can be hard to pinpoint where certain problems are coming from, and thus how to resolve them.

Six Ways to Make Switching Email Software Easier

Ever feel stuck? Like you’re on autoplay? Me too.

Sometimes when I’m comfortable in the recliner and watching a cliffhanger episode of [insert your latest binge series here], it’s easy to think that letting Netflix autoplay the next episode is simply the universe’s way of exerting the laws of nature over me. After all, objects at rest tend to stay at rest unless acted upon by an outside force. And unless the adult in me kicks in, I will be a law-abiding object of the natural world and remain at rest until either I fall asleep or the power goes out. Oh look—the next episode already started. Might as well watch one more... 

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