Why Do Some Sites Reject Temporary Emails?

While temporary email services are convenient for users, many websites and online platforms actively block or reject them. This is primarily to protect their own interests and ensure the quality of their user base. Here are the main reasons why temp mail addresses are often not allowed:

As a result, it’s common for registration forms, comment sections, and download pages to block known temp mail domains. If you need to use a temporary email, be aware that it may not work everywhere.