Temporary email services create an address and provide an inbox that can receive incoming messages. Depending on the provider, the address may remain available for minutes, hours, or longer. Some services automatically delete messages after a period of inactivity. The exact retention period and features depend on the email provider configured by the website.
For practical use, always review the provider rules and avoid sharing sensitive information through temporary inboxes. A temporary address is best suited to low-risk, short-term interactions.