Why is Wiza finding fewer valid emails than usual?
The Wiza help pages give 4 common reasons. The first to rule out: A list built around a single company can come back with no valid emails, and Wiza names this as the most likely reason.
What causes it?
A list built around a single company can come back with no valid emails, and Wiza names this as the most likely reason.
In the Wiza help:
If your export returns 0 valid emails, it's most likely because you're targeting one company.
My list returned 0 results, read 2026-11-12.If your account is linked to more than one sales team, Wiza says its system does not work with that setup, so lists can come back empty.
In the Wiza help:
Unfortunately, our system doesn't work with users who have multiple team connections.
My list returned 0 results, read 2026-11-12.Some companies' mail servers accept every message whether or not the mailbox exists, which makes an address harder to confirm as valid.
In the Wiza help:
Some email servers are configured to accept all incoming email messages, regardless of whether the specified mailbox exists.
How does Wiza verify emails?, read 2026-11-12.When a company's email domain is not set up to receive mail, its addresses cannot pass the check, so fewer valid emails come back.
In the Wiza help:
An email address with a domain lacking MX records would indicate that it cannot receive emails.
How does Wiza verify emails?, read 2026-11-12.
How do I check it myself?
Look at the share of emails and phone numbers found, not only the count, to see whether the find rate fell or you simply searched for fewer people.
In the Wiza help:
To the right, you'll also see the overall percentage of emails and phone numbers found.
Everything You Need to Know About Wiza Usage Analytics, read 2026-11-12.Compare the total for the period with the day by day figures, since one quiet day can look like a drop on its own.
In the Wiza help:
If you scroll all the way to the bottom, you will also get a total number rather than the day by day breakdown.
Everything You Need to Know About Wiza Usage Analytics, read 2026-11-12.Check each lead's email status to see whether its email is valid, risky or was not found at all.
In the Wiza help:
Look for the email_status column to see the whether that lead has a valid or risky email or if no emails was found.
What does valid and risky mean?, read 2026-11-12.
How does Wiza work with Feder?
- Connect Wiza to Feder and it joins your Interest apps.
- When you connect Wiza, Feder checks the connection straight away and shows Connected only when that check passes. If a reading cannot be taken later, Feder shows it as not read, never as zero.
Some numbers are too quiet to judge daily, such as a form filled in a few times a week. Until there is enough of your own history to judge a change, Feder says it is still learning and scores nothing, rather than guessing.
See whether you can trust the numbers in Wiza, one of your Interest apps. Feder only reads. It never changes anything in Wiza.
What else goes wrong with these numbers?
- Why did Wiza stop finding new contacts?Wiza
- Why did my Wiza valid email count jump?Wiza
- Why did Google Analytics stop collecting data?Google Analytics
- Why aren't my key events showing in Google Analytics?Google Analytics
- Why does Google Analytics show (not set)?Google Analytics
See every question.
Where do these answers come from?
Every cause and check on this page comes from the Wiza help pages, quoted above with the date we read them. Last reviewed 2026-11-12. We read them again by 2027-11-12. If one changes, this page changes or comes down.