MailTest API is a RESTful application that validates email address domains to ensure the domain is registered, active, and has MX records. This API is able to detect if a domain is used by a disposable email address or monetized bounce service. MailTest API is available to access URLs and is compatible with most HTTP clients and programming languages. Requests are made through HTTP or HTTPS and responses are in JSON. This is a free service up to 120 call a month. MailTest was built by Naremit, a Thai organization that creates digital products.