250ok has built a best-of-breed platform that addresses the concerns of today's data-driven marketers.


Len Shneyder
VP of Industry Relations


250ok Reputation has changed the way we monitor clients. I absolutely love the level of detail this tool provides, it takes all of the guesswork away and allows me to focus on fixing the problem as quickly as possible.


Kevin Huxham
Director of Deliverability

250ok has consistently proven themselves to be the leader in inbox placement optimization and monitoring. From their best-in-class products to their support team, 250ok provides an essential 24/7 service for Sailthru's global delivery team.


Ken Pfeiffer
Global Director, Delivery


Great group of people who really know the business inside and out. They have some of the most advanced and sophisticated features of anyone in the industry.


Tim Starr
Senior Director of Deliverability

250ok helps us quickly identify senders who may not be getting optimized delivery results. This way the team can focus on working with customers instead of reviewing piles of data.


Kiersti Esparza
Director, Email Privacy & Deliverability


250ok is one of our go-to research tools to help us manage our large group of email clients. From SNDS data to blacklist alerts, it's a must-have for our team.


Josh Nason
Email Reputation Manager

Resources for #SeriousSenders


Seedlist-based inbox monitoring 250ok Return Path eDataSource

Seedlist-Based Inbox Monitoring the Right Way

When sending commercial email, it’s important to understand what’s likely to happen the next time you send to a recipient at a particular mailbox provider. Are your messages hitting SPAM at Yahoo! or going missing at Comcast? Are you sacrificing ROI because you lack the proper visibility into performance? Seedlist-based inbox monitoring is a key […]

IP and Domain Warming, a Medieval Perspective

Marketers are often confused about the point of IP and domain warming, and they end up wondering: “Everything is authenticated, and I’m not using a blacklisted IP, so what’s the problem?” In short: senders who blast to their entire list without history look like spammers. Internet service providers (ISPs) can choose what to accept or […]

The Truth About Email Panel Data

We’re often asked about our stance on the use of email panel data. As senders, we want additional data points, visibility, and signals. In a perfect world, email panel data would enable marketers to compare their engagement to that of their competitors within a contextually relevant group of subscribers. Collected ethically and without bias, this […]




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