To configure your WordPress to use transactional email via SMTP, please follow the steps below:
1- Go to your WordPress admin panel
2- Go to the Extensions/Plugins section
3- Search for the WP Mail SMTP extension. Install and activate the extension
4- On the extension settings page, click on the Email tab (via the dashboard menu)
5- Enter the SMTP options, input the email address you will use in the Username field, and the password for this email address in the Password field as shown in the screenshots below.
6- Send a test email to confirm the deliverability of your email
