Programmable inboxes
Use the CLI or REST API to create inboxes, read messages, and wire temporary email into tests or agent workflows.
Instant Inboxes
Secure Sharing
Auto-Cleanup
API-First
How It Works
Create Inbox
Receive Emails
Auto Cleanup
mailfab SEO
Temporary email for product teams and automation
mailfab is built for quick verification flows, QA runs, and agent-friendly inbox automation without turning the product into a public mailbox directory.
Security posture
API keys are stored as SHA-256 hashes with a mailfab-specific prefix, and keys can be rotated from the console.
Mailbox lifecycle
When a mailbox expires or is deleted, mailfab removes the mailbox and its messages from the active product data.
Frequently Asked Questions
After an inbox expires, can someone else use the same address?
When an inbox expires, mailfab removes the mailbox and its messages from active product data. Create a new inbox when you need to receive more mail.
After my inbox is deleted, can anyone still read my emails?
Deleting an inbox removes the mailbox and its stored messages, so they are no longer available through mailfab views, shares, or API responses.
Is my real email address exposed when I use mailfab?
Senders see the mailfab address you give them. Guest inboxes do not require a personal email address, while signed-in accounts use your account identity for console access.
How long do inboxes last?
Guest inboxes support short windows such as 10 minutes, 1 hour, or 24 hours. Registered users can choose supported mailbox lifetimes, including a no-expiry option for member inboxes.
What happens to shared inboxes when the owner deletes them?
All shares become immediately inaccessible. Anyone with a share link will see an error. Shares are tied to the inbox — when the inbox is gone, every share is revoked.
Is the API secure?
Yes. All API traffic requires HTTPS. API keys are stored as salted SHA-256 hashes — we never store plaintext keys. Keys can be revoked and rotated at any time from the developer console.
Do you store or read my emails?
mailfab stores received messages so the inbox can display them while the mailbox is available. Expiry or deletion removes the mailbox and its messages from the product.
Can I use mailfab for important accounts?
We recommend using mailfab for verification codes, trial signups, and testing. For long-term accounts, use a permanent email provider. Once an inbox expires, you lose access to password resets sent to that address.