Apps similar to One-Off.email include addy.io, which is open source with a free version. Other options are Firefox Relay, MailDrop, Guerrilla Mail and Mailinator. There's no shortage of Disposable Email Services like One-Off.email, with more than 50 alternatives for the web, Android, iPhone, Windows and Linux.
CatchMailNot is a email proxy and privacy service which helps you take control of your digital identity. Make up unlimited email addresses on the fly, receive emails and reply to them without having to give out your real email address.
Private disposable email creates account-linked addresses that only you can read, surfaces verification codes and confirmation links live, blocks remote images and tracking pixels, and fills email fields through a Chrome extension. Addresses last 24 hours, extendable to 7 days.
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Poistaa is a free service that allows automatically discarding your emails for instant. Emails will be received and deleted automatically.
