All of the signals, under one roof.



Us Them
Proprietary spam trap network
Feedback Loop monitoring
Real-time blacklist monitoring
Spam trap monitoring product with activity-based alerting
Spam trap monitoring on shared IPs
Email, SMS, Slack, and HipChat Alerts
Organize IPs/domains into profiles

If it's meaningful to your reputation, you can monitor it in real time with 250ok.

Global Spam Trap Network

Tired of vague spam trap counts and lack of visibility? Us too. That's why we built our own trap network so we can offer a diverse set of data sources, collect and analyze millions of relevant messages per day, and deliver the value email marketers need to improve their program.


Complaint Monitoring

By collecting your feedback loop reports, we'll detect sudden increases in complaints that may cause deliverability issues, and help you suppress your most troublesome recipients.

Blacklist Alerts

Blacklistings can dramatically alter your ability to deliver mail to your customers. 250ok Blacklist was designed with speed and flexibility to notify you of issues before you send.

SNDS & Signal Spam

Integrate and automate your Microsoft SNDS & Signal Spam reporting to track spam traps and complaint rates at Outlook.com, Laposte, Sfr, and Orange.

Resources for #SeriousSenders


Seven design tips and trends email marketers should keep in mind.

*Editor’s Note: We’re super excited to bring you a guest post from Katie White, Associate Director, Travel & Hospitality, Media and Telco at Movable Ink. For more information about Movable Ink, click here.* A picture has always been worth a thousand words, but these days, we’ve entered an era in which visuals are becoming our preferred […]

250ok awarded SOC 2 Type II Certification.

We hope you don’t mind a quick change in our regularly scheduled programming, because we’ve got some super nerdy news to share: We’re incredibly honored to announce the completion of our Service Organization Control (SOC) 2 Type II audit. That’s right, y’all; we’re certified up in here, and we passed with flying colors. What is […]

Prevent mail bombing to protect your reputation.

A new vector of abuse emerged in the email world, one that is hard for any individual brand to catch, but when targeted, the impact on reputation can be serious (Spamhaus-listed serious). It’s known as “mail bombing,” and it is an active and serious threat to both consumers and brands. Why is it so serious? […]




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