AnyAlias is described as 'lets you create unlimited disposable free email accounts so you never have to give out your real email address to anyone' and is an app in the Online Services category. There are more than 25 alternatives to AnyAlias for a variety of platforms, including Online / Web-based, Google Chrome, Firefox, Mac and Windows. The best alternative is MailDrop, which is both free and Open Source. Other great apps like AnyAlias are AnonAddy (Freemium, Open Source), 10 Minute Mail (Free), Burner Mail (Freemium) and Mailinator (Freemium).
MailDrop is a free throwaway e-mail address. It's temporary. It's transient. It's disposable. It's meant for those times when you don't want to give out your real address. Just give someone any e-mail address in the maildrop.
Inboxkitten is an open-source disposable email service that you can freely deploy adopt on your own! Use any inbox to avoid spam Use inboxkitten when you don't want to get spammed by revealing your real email address. Email Auto-Deletes
Open source solution to protect your personal email address. Generous free plan with uncapped bandwidth and infinite sends/replies, self-hostable, lot of powerful features, open roadmap, you can count on SimpleLogin to guard your email inbox.