The best open source alternative to Mailinator is MailDrop, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Mailinator and ten of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Mailinator are AnonAddy (Freemium, Open Source), Spamgourmet (Free, Open Source), Erine.email (Free, Open Source) and Firefox Relay (Free, Open Source).
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.
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MailDrop vs Mailinator opinions
Almost everyone thinks MailDrop is a great alternative to Mailinator.
Nice website and they keep emails longer. Doesn't seem to have alternative domains.
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.
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.