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 Services.

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


Majority of top 100 law firms operate with ZERO DMARC policy in place.

Today 250ok published the latest in our DMARC adoption report series, DMARC Adoption Among the Top 100 Law Firms, revealing more than half (62%) of top global law firms use no DMARC policy to protect their clients and employees. While indexing higher in their DMARC usage than the SaaS 1000, global e-retailers and higher education […]

The new Gmail redesign is here and we are ready for it.

Well, it’s official. Very early this morning, the Google team officially announced what we’ve been whispering about in the hallways since we heard the first rumblings of change. Gmail is getting a redesign. Lots of the early speculation and leaks were correct, so we’re happy to report we’re here to confirm the new functionalities and […]

CASL goes global.

Canada’s anti-spam law (CASL) announced their first international “undertaking,” or violation of their legislation with an agreed-upon remedy. Ancestry Ireland Unlimited Company, which is Ancestry’s international HQ, violated Subsection 3(2) of the Electronic Commerce Protection Regulations (CRTC) (CRTC Regulations), which “stipulates that the unsubscribe mechanism set out in paragraph 6(2)(c) of the Act must be […]




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