We're revolutionizing email intelligence and deliverability tools, one successfully delivered message at a time.
See how our suite of email monitoring tools can improve your deliverability:
Seedlist-based inbox monitoring covering dozens of ISPs
Global blacklist monitoring with fast notifications
Email design testing across 30+ email clients & browsers
Fully integrate our email intelligence into your application
A few customers who love 250ok:
The 250ok Advantage
We live and breathe email deliverability,
monitoring 24/7 so you don’t have to.
Enjoy complete flexibility in scheduling
reports – Any day, any hour, any combination.
Discover if your IP or domain is blacklisted
before you send a campaign, every time.
Better Inbox Insight
Our email placement (inbox/junk/spam)
reports help you land in the inbox.
Flexible Blacklist Testing
An industry first, 250ok allows you to select
specific IP or domain blacklists to monitor.
CSV & Text Importing
Create new email blacklist monitoring profiles
on the fly by importing your domains & IPs.
“I love the flexibility of 250ok’s Blacklist Informant. Being able to adjust the frequency by IP or domain and adjust where the alerts are sent is exactly what we needed.”
Director of Deliverability Operations, Delivra