If Gmail is not syncing on your Android or iPhone, it may be due to poor internet connectivity, outdated app versions, incorrect account settings, or disabled sync options. Low storage, battery saver mode, or background data restrictions can also cause syncing issues. Sometimes, cached data or temporary glitches in the Gmail app prevent emails from updating. Checking sync settings, cl... https://hackmd.io/@VeZd7WLKSNimxK_Val9mFA/why-is-gmail-not-syncing-on-my-android-or-iPhone