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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


Retailers, failure isn’t an option: Clarify your email strategy with a free webinar on July 19.

Email deliverability is tied directly to retail businesses’ financial success. If people don’t see your emails, they can’t click your emails, and thus, cannot purchase things from you. Bad news. When you consider you likely require log-in to complete a purchase, if they don’t get that password reset or any other critical UX components (think […]

Navigate through the email jungle with the 250ok Deliverability Guide.

We get it. We’re email deliverability nerds, but you (likely) aren’t. If you are, that’s awesome and we should be pals. But if you’re not, that’s okay, we’re still here to support you in all your email efforts. How? By giving you the map you need to be confident you’re sending your marketing and transactional […]

Introducing 250ok Prospect: World-class customer vetting and sales prospecting.

We’re back at it! Today we’re excited to unveil the latest addition to the 250ok suite: 250ok Prospect. Since some of the 250ok team worked at email service providers (e.g., ExactTarget/Salesforce, Marketo, Adobe, Oracle, SparkPost, SendGrid), we know one of the most significant challenges they face is gaining insight into customers that have not yet […]






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