This document shows you how to use [Apps Script](https://developers.google.com/apps-script) to
send yourself an email with schemas to test email markup.
## Create the project
Visit [script.google.com](https://script.google.com). If this is your first time
visiting `script.google.com`, you're redirected to an information page. Click
**Start Scripting** to proceed to the script editor. In the script editor,
create a script for a **Blank Project**.
Replace the code in `Code.gs` with the following:
gmail/markup/Code.gs [View on GitHub](https://github.com/googleworkspace/apps-script-samples/blob/main/gmail/markup/Code.gs)
```javascript
/**
* Send an email with schemas in order to test email markup.
*/
function testSchemas() {
try {
const htmlBody =
HtmlService.createHtmlOutputFromFile("mail_template").getContent();
MailApp.sendEmail({
to: Session.getActiveUser().getEmail(),
subject: `Test Email markup - ${new Date()}`,
htmlBody: htmlBody,
});
} catch (err) {
console.log(err.message);
}
}
```
Select **File \> New \> HTML file** to create an HTML file. Name the file
`mail_template` to match the parameter in the preceding script. Replace the
content of the HTML file with the following:
gmail/markup/mail_template.html [View on GitHub](https://github.com/googleworkspace/apps-script-samples/blob/main/gmail/markup/mail_template.html)
```html
This a test for a Go-To action in Gmail.
```
## Test the script
To test the script:
1. Save the project.
2. Select the tab for `Code.gs`.
3. Make sure the function `testSchemas` is selected in the **Select function** menu.
4. Click **Run** in the Apps Script development environment.
The first time you run the script, you're asked to grant authorization. After
authorizing, run the script again. After the script runs, check your inbox for an
email sent from yourself with a
[Go-to action](https://developers.google.com/workspace/gmail/markup/reference/go-to-action) button, as shown
in the following screenshot:
## How does the script work?
The `testSchemas` function reads the HTML content from the `mail_template.html`
file and sends that content as an email to the authenticated user. As explained
in [Register with Google](https://developers.google.com/workspace/gmail/markup/registering-with-google),
Gmail displays all schemas that you send to yourself. You can use the
email sent by the script to bypass registration requirements for testing.