These are targeted and simple forms of phishing emails designed to get victims to click on a link that contains malicious content or steals your credentials.
Tips if Something Seems Off:
Double-check the email address before responding
Look to make sure the email address is correct. In Gmail hover your mouse over the sender name for the email to display. On a mobile phone or a touchscreen, press and hold the link (don't tap!) to reveal the actual URL. (Look in the bottom left corner of the browser window.) Don't click on a link unless it goes to a URL you trust.
Follow up with the sender separately
If you didn’t expect it, reject it. Or follow-up with the individual directly in a separate email or call/text to confirm.