Development and regression testing
Use a temporary email first. Create a new address for each round so verification codes, welcome messages, and workflow notifications stay separate.
Match the address lifespan to the task
What’s the difference between a temporary email and a forwarding alias?
Before choosing an email address, ask two questions: will you need to receive messages later, and will this address handle account recovery? The answers determine whether you need an identity for a few hours, several months, or long-term control.
Full comparison
See the boundaries of each address, from creation to deactivation
| Criteria | Temporary email | Forwarding alias | Regular email |
|---|---|---|---|
| Getting started | Created automatically on the page, no login required | Created after signing in with a verification code | Register with an email provider |
| Address lifespan | 3 hours by default, up to 24 hours | Until you pause or delete it | Depends on continued account availability |
| Where messages arrive | TempGreen temporary inbox | Forwarded to your real inbox and archived for 30 days | Provider’s inbox |
| Attachments | Not retained; entire messages over 100 MB are rejected | Up to 50 MB retained in the archive; 50–100 MB forwarded only | Depends on the provider’s policy |
| Pause options | The entire address expires or is destroyed | Pause, resume, or delete individual aliases | Usually managed with filters and blocklists |
| Account recovery | Not suitable | Depends on keeping control of the real email address | Suitable for important accounts |
Choose by use case
Shorter-lived doesn’t always mean more private, and longer-lived doesn’t always mean safer
The right approach is to limit exposure while keeping the access period the task actually requires.
Shopping and ongoing subscriptions
Use a forwarding alias first. Merchants can still reach you, but you can pause this stream of mail separately.
Financial and work accounts
Use a long-term email address, keep the recovery channel available, and enable two-step verification.
Before switching
Four things to do before retiring an old address
List linked accounts
Check which accounts still use the old address for login, notifications, or password recovery.
Update high-value accounts
Change and verify the new email address before deactivating the old identity to avoid losing access.
Save essential records
Export invoices, confirmation messages, or support tickets; a temporary inbox cannot be recovered after it expires.
Pause and monitor
Pause a forwarding alias for a while first, then permanently delete it once you’re sure no important messages are still arriving.
Common pitfalls
The lifecycle determines whether you can come back
Can you recover a temporary email after it expires?
You shouldn’t rely on recovery. Once the countdown ends, the address and receiving capability stop working, so confirm beforehand that the task does not require long-term recovery.
Does a forwarding alias expose my real email address?
Senders see the alias, while messages are forwarded to your real inbox. You still need to protect your sign-in sessions and real email account.
Are old messages still available after deleting an alias?
On-site archives follow a 30-day display period, but deleting the address stops new messages from arriving. Save anything important in advance.