Go to https://www.gmail.com/ in your computer's browser. This will open your Gmail inbox if you're logged in. If you aren't logged in, enter your email address and password when prompted. It's a circular icon in the top-right corner of the page. Clicking it prompts a drop-down menu to appear. If your account doesn't have a profile image, you'll click the colored circle with the account name's first initial instead. This is in the bottom-left corner of the drop-down menu. Doing so opens a new page with your saved Google Accounts listed. It's at the bottom of the list of accounts. If you want to use an existing account that's listed but signed out, click the account name and then enter the password when prompted. When prompted, type in the email address of the Gmail account you want to add. It's a blue button below the "Email or phone" text box. Type in the password you use to log into your Gmail account. It's below the "Password" text box. Doing so will both add the account to your list of currently signed-in accounts and open the account's inbox. If you want to switch back to your other signed-in account, click the current profile circle in the top-right corner of the page, then click the account you want to view in the drop-down menu.
जीमेल खोलिए: अपने प्रोफ़ाइल आइकन पर क्लिक करिए: Add account Use another account ईमेल एड्रेस एंटर करिए: NEXT अपना पासवर्ड एंटर करिए: NEXT अकाउंट्स के बीच में स्विच (Switch) करिए: