Lifetime
Personal email lasts as long as you keep the account — years or decades. Temporary email lasts minutes. That single difference decides almost every other trade-off.
Identity and recoverability
Personal email is your identity online. Lose access to it and you lose access to most of your other accounts. Temporary email is anonymous by design and can't be recovered — and that's a feature, not a bug, when the use case is one-off.
Deliverability
Some services explicitly block known disposable domains. If a sign-up rejects your temporary address, that service has decided it only wants persistent users — fall back to a personal address or an alias.
A simple rule
Use personal email for anything you want to keep — banking, work, anything with billing or important alerts. Use temporary email for everything else: trials, downloads, one-off verifications, throwaway sign-ups.
15 Minutes Email Monkey
Generate a disposable email address that self-destructs in 15 minutes.
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