To use Gmail with Outlook or other email clients, you must first allow IMAP in the Gmail settings.
To Check that IMAP is enabled
- On your computer, open Gmail.
- In the top right, click Gear Icon
- Click Settings.
- Click the Forwarding and POP/IMAP tab.
- In the "IMAP Access" section, select Enable IMAP.
- Click Save Changes.
- You can now go ahead with setup in your mail client (Outlook etc.)