MailStash guide
Email testing with a temporary inbox
A short-lived inbox can make email testing faster when you need to check a message once and do not want test traffic mixed into a personal or work mailbox.
Check transactional messages
Use MailStash to confirm that a test environment sends welcome messages, receipt previews, passwordless login links, or notification templates to the expected recipient format.
Preview newsletter rendering
Marketers can send a test campaign to a temporary address and confirm the subject line, sender name, preview text, and core body content before sending to a real list.
Separate QA runs
Generate a fresh address for each test scenario. This keeps messages for one test case from being confused with messages from another run.
Record only what you need
If your team needs evidence, capture the subject line, timestamp, and visible rendering. Avoid storing private message bodies longer than necessary.
Know the limits
Temporary inboxes can expire and some senders block disposable domains. For production monitoring, use a dedicated test mailbox you control permanently.