Why can't I find a specific email address in my user list? Is it blacklisted?

Before concluding that an address is blocked, check how you are looking it up — in Pushwoosh an email address is stored as a device attached to a User ID, and User Explorer searches by User ID, HWID or push token, not by email address. Searching for the raw address will therefore return nothing even when the address is registered.

How to check properly

1. Look up the User ID you associated with that address in your own system, then search for that User ID in Audience > User Explorer.
2. In the profile, review the Active user devices column — registered email addresses appear there alongside push devices.
3. Also confirm the correct project/application is selected: email registrations belong to the project they were created in.
4. Verify your registration flow actually created the address (the /registerEmail call or the import/subscription form succeeded).

If the address really is registered but not receiving mail, it may be suppressed after hard bounces or complaints rather than missing from your base. Check the email statistics/error breakdown for that recipient, and see the article on getting notified when an address is blacklisted or bounces. Contact Pushwoosh support with the address and application code if you need the suppression status confirmed.