How to protect your primary email address
A temporary receiving address can separate short-lived signups and unfamiliar contacts from your primary inbox, but it does not make ordinary email confidential or prove who sent a message.
By Strumio Editorial Team · Published August 28, 2026 · Updated August 28, 2026
Choose a temporary address for the right job
A separate address is useful for trying a service, testing a mail flow, receiving a newsletter, or hearing from a contact you have not verified. It can reduce disclosure of your primary address and make it easier to stop future messages by allowing the mailbox to expire. It is not an anonymous identity or a guarantee against tracking and correlation.
Do not use an address that will disappear as the only recovery address for an important account. Password resets, purchase records, legal notices, and long-running subscriptions may arrive after expiry. Use an alias or durable dedicated address when you need continuity, and record the correct recovery method before closing a temporary mailbox.
Understand Private Mail creation and lifetime
A signed-in Strumio user can create a real receiving address when the configured provider is available. The implemented lifetimes are 1 hour, 24 hours, 7 days, and 30 days, subject to active-mailbox limits. If service is disabled or unavailable, Strumio reports that state rather than offering a fake address or hidden fallback.
Pick a period long enough for expected confirmation delays but no longer than necessary. Copy the address carefully and keep the mailbox open until the expected message arrives. Destroying it early removes Strumio access and queues provider-side deletion, but cannot withdraw messages or address data already stored by senders and transit providers.
Do not confuse encryption at rest with private transport
Internet email normally crosses systems that process plaintext. The sender's provider and Strumio ingestion infrastructure must handle an incoming message before Strumio encrypts its stored copy. Storage encryption reduces exposure of that copy but is not end-to-end encryption between the sender and your browser.
Do not ask people to email passwords, recovery codes, private keys, medical records, or similarly sensitive content to a temporary inbox. Use a browser-encrypted SecretLink or encrypted conversation for those handoffs. Moving a received email into Secure Chat protects future chat messages; it cannot retroactively protect the original email.
Treat senders, links, and attachments cautiously
A From address or display name is not reliable identity proof. Attackers can imitate brands and contacts, while temporary signups can attract confirmation lures and marketing. Verify important requests through a known channel, inspect destinations before following links, and never provide credentials merely because a message reached the expected address.
Encryption at rest does not make an attachment safe. Avoid unexpected executables, macros, archives, and login prompts. Use an updated device and appropriate local scanning. If you convert a message into a chat invitation, decide separately whether the sender should receive that capability and verify them when the discussion matters.
Expire the mailbox with realistic expectations
When the selected lifetime ends, the mailbox should no longer be treated as a reachable address. Remove it from accounts that still matter before expiry. If you destroy it manually, Strumio removes access and local wrapped key and ciphertext records immediately and queues provider cleanup with retries.
No mailbox deletion can remove copies held by the sender, sending provider, relays, backups, screenshots, or downloaded files. A temporary address limits future reachability and reduces exposure of your main address; it does not erase history, guarantee anonymity, or replace a durable account and records strategy.
Related guidance
When an encrypted delivery link is appropriate, Create a free Strumio account.