1. Open your Gmail Account
2. Click Settings (gear icon at upper right corner) > Settings
3. Click tab "Forwarding and POP/IMAP"
4. At "IMAP Access" > Click Enable IMAP
5. Click Save
Settings for Incoming Mail (IMAP) Server:
imap.gmail.com, Requires SSL: Yes, Port: 993
Settings for Outgoing Mail (SMTP) Server:
smtp.gmail.com, Requires SSL: Yes, Requires TLS: Yes (if available), Requires Authentication: Yes, Port for SSL: 465, Port for TLS/STARTTLS: 587
Reference for Gmail Setup IMAP in this link:
https://support.google.com/mail/answer/7126229?hl=en&visit_id=1-636658587365329866-366805787&rd=1#ts=1665018,1665137,2769074