# Test Sends — Template Engine — PostFrame — EternalEngine

Save a template, enter an address, and Send Test delivers it through the real pipeline with a [TEST] subject prefix — the same rendering customers get.

[Back to Templates](https://eternalengineos.io/features/postframe/templates/)

Template Engine

# Test Sends

Save a template, type an address, and Send Test delivers it through the real pipeline with a [TEST] subject prefix — the same rendering, tracking and suppression checks a customer send gets.

[Start free](https://app.eternalengineos.io/signup?plan=free&interval=annual)[Template engine overview](https://eternalengineos.io/features/postframe/templates/)

## Test Before You Ship

One-click test send

From the editor, to any address, once the template is saved

Real pipeline

The test goes out through your configured provider like any other send, so what lands is what customers get

Broadcast tests

A broadcast can be test-sent to one address before it goes to an audience

Test-mode API keys

Sends made with a pf_test_ key are flagged test mode and never fire your webhooks

Test Workflow

1.Save the template

Send Test needs a saved template

2.Open Send Test and enter an address

Any inbox you can read

3.Check the inbox

The subject starts with [TEST] so it is easy to find

4.Adjust and send again

Edit, save, and send another test until it is right

## Keep exploring PostFrame

[### Live preview Rendered preview as you type. Open Live preview →](https://eternalengineos.io/features/postframe/templates/live-preview/)[### API key isolation Test-mode keys never fire webhooks. Open API key isolation →](https://eternalengineos.io/features/postframe/multi-tenant/api-key-isolation/)[### Webhook events Signed events for every delivery, open and click. Open Webhook events →](https://eternalengineos.io/features/postframe/webhooks/)

Questions

## Common questions, straight answers.

How do I send a test?

Save the template, click Send Test in the editor, enter an address, and send. The subject is prefixed with [TEST] so it is easy to spot in your inbox.

Does a test send use my real provider?

Yes. It goes through the same send pipeline and provider as a customer email, which is the point — you see exactly what will land.

Will a test send trigger my webhooks?

A Send Test from the editor is a real send and behaves like one. Sends made with a test-mode API key are flagged test mode and skip webhook dispatch.

Can I test a broadcast before it goes out?

Yes. Broadcasts have their own test send to a single address, so you can check the rendering before scheduling the audience send.

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