250ok - 2026 Pricing, Features, Reviews & Alternatives

250ok is a provider of advanced email analytics and deliverability products, offering a customized platform boasting global seed coverage with over 100 mailbox providers. Employed by some of the leading Email Service Providers (ESPs) and enterprise-level marketers, the suite of 250ok products drive insights around inbox performance, sender reputation, DMARC compliance / fraud protection, design rendering on multiple devices and also customer engagement. Starting with 250ok Inbox, users can test, monitor and resolve inbox placement issues in real time by leveraging coverage of international B2B and B2C mailbox providers. Optimized seed testing, via 250ok's patent pending Seedlist Optimizer, is streamlined to focus only on email list composition and the providers being mailed while automated notifications promise to highlight the issues of most importance. The rule-based 250ok Alerts can send email, SMS, webhook notifications alongside in-app support for third-party apps including Slack, HipChat and PagerDuty.

250ok Reputation then monitors email reputation with a proprietary global spam trap network, feedback loop and real-time blacklist monitoring to mitigate complaint levels while ensuring the right messages can go to the right recipients. 250ok DMARC then aims to protect a brand and its customers with DMARC report analysis to summarize compliance trends and corrective actions within its Message Center feature. With data visualization tools for gauging holistic email performance, 250ok Analytics and the platform's drag and drop deliverability dashboards, offer real-time tracking, advanced filtering and segmentation, plus widget-based reporting sharable across marketing teams. Lastly, 250ok Design promises an email previewing module that recognizes over 70 email clients and devices, utilizing leading rendering providers to capture screenshots from imported ESP templates or campaign HTML upload.