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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


Deliverability 101: Monitoring Blacklists and Spam Traps

Email blacklists and spam traps aren’t new, so whether you’re an email veteran or just getting started, you have probably heard of blacklists. You may have even heard of spam traps. However, few people have a true understanding of what they actually are, how they work, or how a sender should monitor them. Join them: […]

Deliverability 101: What is an IP address?

After our exploration into DNS, IP addresses were mentioned several times and I started thinking, “Maybe I need to explain IP addresses in more detail.” So here we are. What are IP addresses? An Internet Protocol (IP) address is a number assigned to any device connected to the internet. When sending email, internet service providers […]

DMARC adoption rates very low across most industries.

This year, we made it a priority to analyze the adoption of Domain-based Message Authentication, Reporting & Conformance (DMARC) in industries using email as a key means of communication and business growth. We looked at the domains of the SaaS 1000, top law firms, nonprofit organizations (NPOs), higher education institutions, top Chinese brands, and e-retailers […]






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