Everything email, under one roof.

Achieve world-class email performance, simply: manage consumer engagement, inbox placement, sending reputation, design, and DMARC, all with 250ok.


Expert Services

Need help? Our strategists solve deliverability problems other consultants didn't even know existed. Click here to find out more about 250ok Experts.

100% Personalized

The 250ok experience is personalized for each customer, from reporting dashboards to custom Slack alerts. Set it and forget it. Focus on what matters to you, noise-free.

The Complete Solution

Inbox testing. Blacklist monitoring. Global spam trap network. DMARC compliance. If it's a meaningful KPI, you can measure it with 250ok.

Why are top marketing programs making the switch to 250ok?


Real Email Intelligence

Combine data from all of your ESPs and 250ok within a single UI and behold your new email brain center. Slice and dice all of your data in complete granularity and at blazing speeds. As our retention rate shows, once marketers gain access to this level of email intelligence, there's no going back.

Optimized Seed Testing

We offer extensive global seedlist coverage; but the difference is 250ok's patent pending Seedlist Optimizer - a tool that creates list-specific, weighted testing and reporting of how your mail performs against global spam filters at the mailboxes you send to, not the one's you don't.

DMARC Dedication

Return Path sold their email fraud protection division to Proofpoint in 2016. While they now resell the Proofpoint offering, we control and continue to enhance our 250ok DMARC product. You can see us listed on DMARC.org, and our very own Paul Midgen was a co-author of the original DMARC spec.

Do you need email certification and panel data?

Old-school solutions to modern challenges are not a recipe for success. That's why we love debunking sender mythology — so you don't get burned.


Myth #1: Everyone Needs Email Panel Data!

No, everyone sending commercial email today already owns the most relevant panel in the world: the people they're sending mail to. With currently available panel offerings there is no statistical significance for most senders and the data is often misleading and hazardous given its severe biases.

Myth #2: Email Certification is a Smart Investment!

For most senders – not all – the juice is no longer worth the squeeze. Cert won't help you at Gmail, the largest mailbox provider in the world. Based on changes in the modern email landscape, 250ok customers combine best practices with expert services to achieve world-class performance.

Myth #3: Seedlist-based Inbox Testing is Dead!

While some vendors downplay the value of seedlist testing, do so at your own peril. Seeds are like spam traps: by the time the red flag goes up, there's already a problem. They are a critical component in testing perimeter defenses like blacklists, global spam filters, and reputation in general.

Resources for #SeriousSenders


Case Study: PeopleConnect now receives actionable insights from homegrown system by using 250ok.

PeopleConnect, an online social networking service comprised of two products, Classmates and Intelius, uses an in-house solution to send email rather than an email service provider (ESP). 250ok’s all-in-one platform allowed Lori Deregt, marketing manager, to holistically manage Intelius from a single-point solution and customize the dashboard to focus on what she cares about most. […]

Help! My email is 100% missing? Where did you put it?!

One of the most common questions reported by our users is also one of the most maddening to experience as a sender: A campaign is showing as 100% missing. What does this mean? Is this test still processing? Did everyone drop this? More to the point; what value does this even offer? After all, how […]

Email on Tap Episode Five, with Kandice Carlson, Retail Solutions Product Marketing, Google Cloud

Anthony Chiulli, 250ok’s director of product marketing, conducted one more interview while at Shoptalk in Las Vegas! He spoke to Kandice Carlson, retail solutions product marketing, Google Cloud on the exhibit hall floor. Anthony and Kandice discussed the ever-buzzy AI and machine learning technology as it can apply to marketing, how brands successfully connect with […]




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