This guide will help you set up your email in Gmail.
Open Gmail
Click the settings icon and select "See all settings"

Open the "Accounts and Import" tab

To configure outgoing email, click "Add another email address" in the "Send mail as" section

In the opened window, enter your preferred name and your Sibly Webmail email address, then click "Next Step".

Enter the outgoing mail server settings, , your username (email address), and password, then click "Add Account"

Within a few minutes, you will receive a confirmation email containing a verification link. Click the link to confirm the account addition.
If needed, use the following server settings:
→ Email server settings