Tens of thousands of Google e-mail users got a shock early this week: All of their e-mails and contacts disappeared. Google said Monday night that it was in the process of restoring all of these ...
You can clear your Gmail cache by selecting the "Clear browsing data" option in the "More Tools" located in the email client's Settings menu.
You can clear your Instagram cache by deleting the app on an iPhone, or through the Settings menu on an Android.