I get a lot of requests about email protection, the following are measures used to help prevent email tampering and provide your email a good reputation over time if you have no problems.

They are mainly used when you have your own domain name and once configured start working immediately.

Large email providers also provide this protection but I am not sure to what degree, they have to take into account bad actors as well as the good so it's a balancing act.

The following gives you an idea of what these protocols provide.

SPF and DKIM for Email protection

SPF and DKIM are two authentication protocols used to detect email spoofing, which is when a malicious sender pretends to be someone else. They are also used to increase your email deliverability.

 Are SPF and DKIM the Same?

While they both are authentication protocols, SPF and DKIM are not exactly the same. 

SPF is used to authenticate the sender and ensure that only authorized servers can send emails from your domain, while DKIM is used to verify that messages haven’t been tampered with in transit. 

Do I Need Both DKIM and SPF?

Yes, it is highly recommended to use both DKIM and SPF for a complete email authentication setup. This will protect your domain from malicious activity and improve your deliverability rates.

Can SPF and DKIM Prevent My Emails From Being Marked as Spam?

Yes, SPF and DKIM can prevent your emails from being marked as spam by helping you build a good reputation with email providers. However, they cannot guarantee that your emails will never be marked as spam.

This information has been collected from the Internet