Lessons from the most extensive email deliverability study, ever.
Data waterfalls get expensive, fast. Most try to maximize “thoroughness” at first (find/validate EVERY email humanly possible), but costs grow quickly and it becomes clear that some tradeoffs need to be made between quality and cost. The question is — “how can you make these tradeoffs if your email verifiers are black box?” Meaning, if […]
Growth
This is the third installment in our series — if you feel lost, check out our first article and work your way up towards this one. In our previous articles, we shared key insights from our multi-year study on email deliverability — what SPAM filters are built to look for and how they work. Using […]
Growth
This is the second installment in our series — if you feel lost, check out our first article and work your way up towards this one. Most people imagine a SPAM Filter to be a single piece of software — a black box that receives emails, applies all kinds of secret logic rules, then spits […]
Growth
This is the first of our periodic studies where we benchmark the leading Email Finders against each other in random data sets. As a Solo Capitalist portfolio company, our core values are to deliver products that are best, fast and cheapest in class, and to do so in a transparent and scientific way. These benchmark […]
Growth
A lot of people still use “Bounce Rate” as a way to measure things like Data Provider Quality and Email Deliverability. But our two year long research study found that this metric is no longer as useful as it once was for measuring deliverability. In this article, we’ll take a closer look at why this […]
Growth
Spam filters are black boxes for a reason — if everyone knew how they worked, they’d be much easier for bad actors to crack. This means that to understand how they work, we have to take a hands-on approach to testing and observing their behaviors, developing hypotheses on how they work and then testing those […]
Growth
SMTP verification should be a commodity — the code is open source, it costs virtually nothing and it works over a standardized protocol. Yet cold email marketers always verify their lists with multiple email verification services, increasing their verification project several fold. At first this doesn’t make sense — like buying multiple thermometers to measure […]
Growth
Email verification was a commodity for the longest time — all products did the same thing and produced similar results. But recently, a dozen startups (Findymail, Prospeo, Scrubby, Leadmagic, etc) emerged claiming to do it “better” than legacy players. These companies have gotten a lot of attention, due to their claim that they can verify […]
Growth
SMTP verification is the oldest and most standard way of verifying emails. In this article, we’re going to cover everything you need to know about SMTP verification — how it works, where it fails and how to get better results. Let’s go! What is SMTP? SMTP stands for Standard Mail Transfer Protocol. Just like other […]
Growth
Email deliverability is critical to cold email. Without it, you’re spending thousands of dollars sending email into a black hole where your prospects will never see them. BUT, email deliverability comes with a dark side – nobody REALLY knows how to measure it (yes, even those “email experts”). This is a big problem for email […]
Growth
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