Start with the purpose, not the number of addresses
A separate address is useful when it gives a group of messages a clear purpose. You might keep shop receipts apart from project updates, or use one address for a short test and another for ongoing correspondence. Create a few meaningful categories before creating more inboxes.
Maily lets you create named or random addresses and keep them in one list. Labels and address search can help you find the right inbox later. A named address may include a generated suffix, so check and copy the complete address rather than assuming a particular spelling.
Match the address lifetime to the task
For a short-lived task, a temporary address may be enough. The optional Free temporary address lasts four hours; opening the app again does not extend that time. A confirmation or a reply arriving after the address has expired cannot be recovered by reopening the inbox.
For ongoing use, consider the primary address and its message-retention rules, or an active paid-plan address. Do not use a short-lived address for banking, government services or recovery of an important account. An address that outlives a task is not the same as an inbox that keeps messages forever.
Understand what separation does not do
Giving a service a separate address can reduce the number of places where your main address is shared. It does not prevent that service from storing other identifying information, sharing data or sending unwanted mail. Maily does not promise absolute anonymity or guaranteed protection from spam.
Review your addresses occasionally, choose your primary deliberately and save important information before its retention period ends. If you no longer need an address, read the deletion and recovery rules before removing it. Good organisation depends on clear lifetimes as much as on the number of inboxes.