What should I do if I'm unable to verify my email on the Thai e-Visa website?

A user is experiencing issues verifying their email address for the Thai e-Visa application process. They created an account but have not received the verification email after several days and are now unable to log in due to the system recognizing their email as already in use. Community members suggest checking the spam folder, trying a different email provider (like Hotmail), using the 'forgot password' option, and note that Gmail generally works well with the Thai e-Visa system.