Gigainbox.com is described as 'Protect your personal email address from spam with gigainbox.com' and is a Disposable Email Service in the Office & Productivity category. There are more than 100 alternatives to Gigainbox.com, not only websites but also apps for a variety of platforms, including SaaS, Windows, Android and Google Chrome. The best alternative is AnonAddy, which is both free and Open Source. Other great sites and apps similar to Gigainbox.com are MailDrop (Free, Open Source), Spamgourmet (Free, Open Source), Firefox Relay (Free, Open Source) and 10 Minute Mail (Free).
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.
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.
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.
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.