Email account hacking is trained by experienced hackers for a bigger task. It's a kind of practical reason for them. Email is quite easy to open and edit. This means that the anti-spam issue is very important as email is the most vulnerable to introducing different types of malware, spam, viruses, etc.
In recent years, considerable attention has been paid to protecting email with spam filtering services. Expert agents that provide email protection services have put in place various processes to ensure that email is properly encrypted as it passes through the email server.
Image Source: Google
Another factor that makes email more vulnerable to various hacking activities is a transmission from one remote server to another. During the transition, manipulations are carried out at this point, resulting in spam and an influx of viruses. Spam protection is used by newer POP3 and IMAP technology methods. Some newer email service domains such as Netscape and Outlook Express use this method to provide encryption in their e-mails so that the transmission process is protected from forgery.
This type of free email protection is provided on the email domain itself, which can be easily activated for complete protection. This anti-spam technology aims to fix the root cause of the problem. Email is written in HTML, which is displayed in the sender's and recipient's account. This type of language can easily be tampered with by including more text like that and thus creating spam messages. Since the servers don't do much other than simple transfers, they can't see the changes. Therefore, the server does nothing to protect against spam.