See Gmail account activity
Monitor access type, IP address and date/time in your Gmail account
Here's how you can see the activity on your Gmail account. This will show you the access type (browser, mobile, etc.), the location (IP address), and the date/time your Gmail account was last accessed.
1. Go to Gmail and login.
2. Look for the very small Details link at the very bottom of the page.
3. Click the Details link.
For more, see the original article at the link below.