Email is one of the primary mechanisms attackers use for their nefarious deeds. If your organization runs an email server, read more about this online bootcamp to train your IT staff to implement email security.
If your organization runs an email server, your IT support can both reduce the amount of malicious email your employees receive and prevent attackers from sending emails that appear to come from your business.
DMARC is a set of configurations your IT support can put in place, there is nothing to purchase.
For more details and to register for the bootcamp, visit the Global Cyber Alliance (GCA) online:
https://bootcamp.globalcyberalliance.org/dmarc-bootcamp-2020