Pinterest eHarmony DraftKings Furniture Row Arsenal FC Adobe

Get advanced analytics on everything email.


All of the signals

A single email management platform

Build a customized email management solution.


World-Class Deliverability

Emails that don't reach the inbox are simply wasted opportunities. 250ok tracks every aspect of your email program to ensure that your messages reach your customers.

Expert Services and Support

You won't find any junior-level script readers here. Ask for examples of deliverability issues 250ok diagnosed, triaged, and quickly resolved after other competitors failed.

Complete Customization

Live outside the app with custom email, SMS, Slack, HipChat, PagerDuty, and webhook alerts. Set it and forget it. Focus on what matters to you, free of pointless notifications.

The 250ok Difference:



Us Them
International seed coverage at 100+ mailbox providers
Design integration with Litmus & Email on Acid
Integrated with major email service providers
Spam trap & phishing monitoring with alerts
In-house DMARC monitoring & guidance
Custom Email, SMS, Slack, and HipChat alerts
Compare performance across any campaign, device, or client
Full API or white label integration

Resources for #SeriousSenders


250ok now powers two-thirds of the top 6 US e-retailers.

You read that right. We are so excited to announce 250ok now brings advanced email analytics to supercharge the email programs of four of the top six US retail ecommerce companies by sales share (as of September 2018), according to eMarketer. What does this mean for you? Oh, only that we’re a trusted partner for […]

Email Mythbusters: Changing my IPs and/or domain will fix my reputation issues.

Imagine… You are welcoming guests into your home for a party. As people start to file in, you greet them with smiles and hugs, exchanging hellos and kind words. There is your best friend who, thankfully, brought wine and dessert. You greet your co-worker, too, and briefly chat about the weather. As you get ready […]

Email Validation 102: Pros and Cons

We’re back with our next blog in our partnership with Lauren Meyer, Mailjet’s global VP of delivery & head of operations, North America. What are the things you should expect to encounter, positive and negative, when you start cleaning your email marketing lists via validation? Considerations for the Marketer If you checked out “Email Validation […]






Ready to get started?