> ## Documentation Index
> Fetch the complete documentation index at: /docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Email addresses for testing

> Special mailbox addresses for testing delivery, hard bounces, soft bounces, and spam complaints.

# Email Addresses for Testing

To test your application's error handling, bounce webhooks, and retry logic without sending spam to real people, Mailofly provides simulated test addresses.

***

## Simulated Recipient Addresses

When you send to these addresses in sandbox mode or using an active API key, Mailofly simulates specific delivery responses without dispatching external SMTP traffic:

| Recipient Address | Simulated Result | Webhook Event Triggered |
| :- | :- | :- |
| `delivered@mailofly.dev` | Simulates successful delivery (`250 OK`) | `email.delivered` |
| `bounced@mailofly.dev` | Simulates permanent hard bounce (`550 5.1.1 User unknown`) | `email.bounced` |
| `softbounce@mailofly.dev` | Simulates temporary mailbox full (`452 4.2.2`) | `email.delivery_delayed` |
| `complained@mailofly.dev` | Simulates recipient clicking "Report Spam" | `email.complained` |

***

## Testing Suppressions

Sending to `bounced@mailofly.dev` or `complained@mailofly.dev` automatically adds the address to your test workspace suppression list, allowing you to test:

* Webhook signature verification and payload handling
* Your database marking the user profile as un-deliverable
* UI banners warning users about bounced emails


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