Hi there,
Thanks for raising this — timezone behavior can be a bit tricky, so we are happy to clarify.
Time Zone Optimization (TZO) is designed to deliver your campaign at the most relevant time for each subscriber, based on their local time zone. This helps ensure your emails land at just the right moment—like 10am sharp in each recipient’s day.
How Does TZO Work? – TZO uses IP address identification to determine a subscriber’s time zone. These IPs are automatically collected when someone signs up through an Omnisend form.
If location data is added manually (like a country field) or imported from another source, TZO won’t function for those contacts. In such cases, or if an IP address is missing, the system defaults to your store’s time zone.
Looking into the specific contact you mentioned (ContactID: 5f18a73d9b56f42ab103dce7), we can see that their IP address places them in the United Kingdom. This means that at the time of signup, the system detected a UK-based location, either because they were physically there or possibly using a VPN to mask their actual location. Even if they are currently in the U.S., the email was scheduled based on the IP address captured at signup, which is what TZO relies on.
We hope this helps explain the unexpected send time! Let us know if you’d like help getting the most out of Time Zone Optimization — we’re always glad to assist and committed to supporting your success.
Ah, got it, that actually makes a lot of sense now. I checked the contacts and saw the same thing, a bunch of them either had no IP or seem to be picked up in random locations, so that would explain the weird send times.
Thanks for breaking it down so clearly, all good on my end now!
Awesome, we’re glad to hear that helped clarify things!
And great job spotting the missing or inconsistent IP data across your contacts, that’s exactly the kind of detail that can make a difference when working with TZO.
If you ever want to explore ways to get even more from your setup, we’re always here to support your success.
Happy sending! 🚀
