To set up your mail settings, you will need a valid Gmail account.

When you enter your details in Settings>Business>Email Setup, the following error appears: "535-5.7.8 Username and Password not accepted. For more information, go to"

To resolve this, go to your Google Account settings page, search for 2-Step Verification, and enable it.

After it is enabled, navigate to the App Passwords page.
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You will need to create one and name it as "Zavy".
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Copy the generated password and save it in a separate location (e.g., Notepad).

Navigate to Settings>Business>Email Setup>Settings.
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Paste the password into the settings along with the other details and it should work.

For more info you can go to this link to create an app specific password : ​https://knowledge.workspace.google.com/kb/how-to-create-app-passwords-000009237