Open Trashmail is described as 'Open Source standalone trashmail solution that ships its own mail server' and is an app in the Online Services category. There are more than 50 alternatives to Open Trashmail for a variety of platforms, including Online / Web-based, Windows, Linux, iPhone and Firefox. The best alternative is MailDrop, which is both free and Open Source. Other great apps like Open Trashmail are Spamgourmet (Free, Open Source), 10 Minute Mail (Free), Burner Mail (Freemium) and Mailinator (Freemium).
Tempinbox is a free temporary email service that can be used to receive disposable email from any website without using your own personal email. Use our service as you wish we don't care about spam emails :).
Rain Mail is free temporary email service, you can create a free temp email address to use for registrations on social media or newsletters etc. addresses are valid forever but are public and emails are deleted after 24 hours.
FakeMail is a free temporary email address generator and throwaway email service provider offering temporary, secure, anonymous, free, disposable email addresses where you can receive email temporarily but self-destructs after a certain time.