There are several solutions for securing email communications, including:
Encryption: This is the process of converting plain text into a coded format that can only be read by someone with the proper decryption key.
Authentication: This is the process of verifying the identity of the sender of an email to prevent spoofing or impersonation.
Spam filtering: This is the process of identifying and blocking unwanted or malicious emails, such as those containing viruses or phishing attempts.
Email archiving: This is the process of storing and preserving email communications for a certain period of time, usually for compliance or legal reasons.
DMARC: Domain-based Message Authentication, Reporting & Conformance (DMARC) is an email-validation system designed to give email domain owners the ability to protect their domain from unauthorized use, known as email spoofing.
Email Firewall: A special type of security software or hardware that monitors, filters, and blocks incoming and outgoing email messages.
Multi-factor Authentication: This is a security measure that requires users to provide more than one form of identification, such as a password and a fingerprint or a password and a security token, to access their email account.
Email Content Filtering: This involves scanning the content of email messages for specific keywords, phrases, or attachments, and taking actions based on predefined rules.