I already changed my profile picture i think 15 years ago, but it shows the very old photo when I send emails to other people, though when I log in to my account it showing the newer photo already. I only realized it now that I want to change the profile picture again as I don't normally log in through the browser. I only use the mail app on IPHONE. So all this time, it's still showinv the old photo everytime I'm sending emails.