The well-known options
10 Minute Mail popularized the format: a random address that lasts about ten minutes with a timer you can extend. Guerrilla Mail keeps mail for roughly an hour and lets you send as well as receive. YOPmail uses predictable, guessable inboxes that persist for days, which is convenient but far from private.
Mailinator is aimed at teams and testing, with public inboxes anyone can open by name. Each trades privacy, lifetime, and convenience differently — there is no single best one, only the best fit for a given task.
Where this inbox fits
Temporary Email is the short-and-clean option: a random address, no signup, and a hard five-minute timer. That is long enough for most verification codes and short enough that leftover mail never piles up on a public address.
If you need mail to sit for an hour, a longer-lived service is a better match. If you just need a code now and want it gone afterwards, the inbox on this page is the simplest path — copy the address, grab the code, let it expire.
Choosing the right one
For a one-time code: any short-lived service works, including this one. For a link you must click an hour later: pick a service with a longer lifetime. For shared team testing: a named public-inbox tool like Mailinator is designed for that.
Whatever you choose, the same limits apply across the category: some sites block disposable domains, none of these are private mailboxes, and none should hold anything you need to keep.