Deliverability tools have traditionally treated all mailbox providers as equals.

That's why we've innovated seedlist testing with the Seedlist Optimizer. An industry first, the optimizer analyzes and identifies the composition of your mailing list to personalize your seed testing around your outbound mail stream.

How it works:


1

Upload a segment of
your mailing list

By uploading a segment of your mailing list, you can now receive a personalized, weighted seedlist for more accurate deliverability testing. You may find that the majority of your list goes to the "Big 4" global ISPs such as Gmail, Apple, AOL, and Hotmail. In fact, many of our customers are sending about 25% of their mail to Gmail. But what about the other 100+ ISPs we cover?

2

250ok analyzes where
your mail is going

As the optimizer churns through your mailing list, we'll tell you where your mail is actually going and give you more visibility into which ISPs you should focus on. Similarly, you'll also get a better idea of which blacklists to monitor more closely and which mail clients you should optimize your campaigns around.

3

Apply the results for
optimized seed testing

Once you apply this weighting to your seedlist, you'll start seeing the "weighted" results at the bottom of your 250ok Inbox tests, providing a more accurate view into the health of your inbox placement. You can then allocate your resources based on the ISPs that matter most to you.

Resources for #SeriousSenders


How did 2019’s late holiday season affect e-retailer emails?

It’s over. It’s all over. OK, that’s definitely a lie, because there are still almost two weeks until Christmas and there is no rest for the wicked, but when it comes to the busiest days of the year for e-retailers, we can fondly look back. Black Friday and Cyber Monday 2019 were a little bit […]

250ok’s email podcasts now available on Spotify!

Right now, you’re probably listening to your Spotify Wrapped, like everyone and their mothers (who are probably skewing their results by several decades). But we’re excited to throw our hats into the ring for next year’s round-up, now that we have BOTH of our popular email marketing podcasts listed as shows on the streaming service! […]

Sweeping changes coming to 250ok’s email analytics platform.

Historically, our industry has been largely comprised of third-party vendors and niche offerings; inbox monitoring tools here, reputation and compliance tools there, maybe with some design previews or DMARC reporting sprinkled in. It begs the question: How can these tools better talk to each other, inform each other, and offer a truly cohesive experience for […]




Ready to get started?