Four third-party add-ons you can plug into Gmail to help your navigate the internet a little more safely. They range from add-on to protect you from phishing attacks to keep Google from peeping at what you send through their e-mail servers. Gmail Sender Icons is a Chrome extension that puts favicon symbols next to senders in Gmail, so you can quickly visualize which domain each message is coming from. Chrome extension watches out for Google sign-in pages that arent actually Google signs-in.”]
Source: https://gizmodo.com/the-best-add-ons-for-protecting-you-from-a-gmail-hack-1792666862