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


How did 2019’s late holiday season affect e-retailer emails?

It’s over. It’s all over. OK, that’s definitely a lie, because there are still almost two weeks until Christmas and there is no rest for the wicked, but when it comes to the busiest days of the year for e-retailers, we can fondly look back. Black Friday and Cyber Monday 2019 were a little bit […]

250ok’s email podcasts now available on Spotify!

Right now, you’re probably listening to your Spotify Wrapped, like everyone and their mothers (who are probably skewing their results by several decades). But we’re excited to throw our hats into the ring for next year’s round-up, now that we have BOTH of our popular email marketing podcasts listed as shows on the streaming service! […]

Sweeping changes coming to 250ok’s email analytics platform.

Historically, our industry has been largely comprised of third-party vendors and niche offerings; inbox monitoring tools here, reputation and compliance tools there, maybe with some design previews or DMARC reporting sprinkled in. It begs the question: How can these tools better talk to each other, inform each other, and offer a truly cohesive experience for […]




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