This is usually a proxy issue. Ensure your proxies are alive and not blocked by the mail providers.
Ensure Python is installed and added to your System PATH. mail access checker by xrisky v2 install
The tool will begin sorting hits into categories (e.g., Working, Bad, 2FA, or specific providers like Gmail/Yahoo). Results are typically auto-saved into a This is usually a proxy issue
Install Visual C++ Redistributable Packages for Visual Studio 2013 (vcredist_x86.exe or vcredist_x64.exe). mail access checker by xrisky v2 install
The use of email checker tools should strictly adhere to legal and ethical standards.