33Mail is described as 'Simple free disposable email address service, unlimited free disposable email addresses. Create a new e-mail address whenever you need one. Maintain complete control over active addresses. Forwards all mail to your existing e-mail address. Never receive unwanted e-mail again' and is a Disposable Email Service in the Security & Privacy category. There are more than 50 alternatives to 33Mail, not only websites but also apps for a variety of platforms, including SaaS, Firefox, Google Chrome and Windows. The best alternative is AnonAddy, which is both free and Open Source. Other great sites and apps similar to 33Mail are Spamgourmet (Free, Open Source), Firefox Relay (Free, Open Source), 10 Minute Mail (Free) and Burner Mail (Freemium).
Spamgourmet provides disposable, optionally self destructing, email addresses that get created automatically the first time they are used, forward messages, and then automatically expire after number of specified messages received.
Spamgourmet vs 33Mail opinions
pros, cons and recent comments
All the other entries provide disposable email addresses while 33Mail provides email forwarding as an alternative to disposable email addresses
We all make many online accounts, but most of them are linked to 1 or 2 of our email addresses. This means if just one account is hacked or tracked, every other account and its associated data is now also at risk.
Guerrilla Mail gives you a disposable email address. You can give your email address to whomever you don't trust. You can read the email using Guerrilla Mail, click on any confirmation link, and even reply.
Bouncr allows you to hide your permanent email address behind an '@boun.cr' address. You then share it however and with whomever you wish. Anytime you're receiving unwanted emails, simply cancel your Bouncr address and it's gone.
YOPmail’s free, quick and feature rich service guards you against spam, phishing and other online abuses. Protect your actual email, instead use YOPmail’s disposable one to sign-up wherever you want. YOPmail creates temporary inboxes of your choice instantaneously.
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.