I believe the entity you are looking for is Candidate
. Taleo Connect Client has a built in template for exporting candidates, which includes usernames and email addresses.
- Open Taleo Connect Client and select File → New → New Export Wizard.
- Click the Product dropdown and select your Taleo product version.
- In the list of entities, select Candidate.
- Under the Template section, select Create export from a template.
- Click the Template dropdown and select Standard Candidate export (CSV-ENTITY).
- Click Finish to create your new export.
Note: The candidate export template for Recruiting Taleo 14A appears to be based on Recruiting 10.0.1. This can be fixed either by creating an export without a template, or by changing productCode="PRO1001"
to productCode="RC1401"
in the source file.

You can customize your export's projections and filters to suit your needs. Alternatively, if you don't want to start from a template, you can create a new export instead.
Once your export is saved, you can run it by creating a new configuration.
- Open File → New → New Configuration Wizard.
- Select Based on an export specification.
- Click the three dots ... next to File and select your export.
- Click Next to move to the next page.
- Select your Taleo Endpoint, then click Finish.
- Save & run your configuration.