Why was my email rejected when signing up?

Last updated: June 18, 2026

OneSafe blocks certain email addresses during signup to prevent fraud and protect platform integrity. There are two common reasons:

  1. It's a disposable address. OneSafe blocks throwaway email services (Mailinator, Temp Mail, etc.). Use a permanent business or personal email.

📄 Why does my email get flagged as disposable, even though it’s permanent?

  1. It uses a subaddress. Addresses with + tags like you+onesafe@gmail.com aren't accepted. Use your base address instead (e.g., you@gmail.com).

If you're using a legitimate address and it's still blocked, email support@onesafe.io with the rejected address and the team can assist you.