Email spoofing is forging email so it looks like it came from someone it didn’t. Forging handwritten signatures is hard, but the barrier to entry is high, as is the risk of getting caught. Kludges like SPF, DKIM and DMARC make email spoofing harder than it used to be, but workarounds remain for scammers and spammers and phishers to spoof. An email from a trusted email address receives the same level of trust in our brain as a handwritten letter from a loved one.”]
Source: https://www.csoonline.com/article/3539282/email-spoofing-explained-who-does-it-and-how.html