Go to Automation > Rules
Click on Create New if you have already set up rules and if this is your first rule, you will be seeing 'Create your First Rule' it will take you to the below page
There are three parts in the RULE, that is WHEN, IF and THEN.
You can set up the conditions as mentioned below for the use case of not spamming a particular email that comes from the FROM address abc@example.com.
Rules can be created with different criteria as per your use case.
WHEN condition
IF Condition
THEN condition
Once you are done with setting up the conditions you can enable the rule and save it.