Now if the Gmail want to keep a data of the IP Address of email sender in Gmail and here is tutorial for you to guide on how to do it. Gmail is the most popular emails service provider which has millions of users and in case if the sender happens to use a third party email clients like the available thunderbird or the GMAIL app then the IP address can be known very easily.
Find the IP address of Email Sender in Gmail
Step 1: Login to Gmail Account with the user credentials
Step 2: Open the email from Gmail account for which you wish to find the IP address for.
Step 3: Now just click on the inverted image which is present on the screen

Step 4: click on show original in the drop down list available
Step 5: Next see some image below which is visible on the screen.
Step 6: Now, press CTRL + F on your keyboard to open up search bar
Step 7: Search for Received: from- type this in the search bar
Step 8: Now you’ll see Received: from is which is visible on a highlighted font and in the line you find the IP address of sender .