The "rua" tag in DMARC policy selection allows you to receive aggregated email reports to a specified email address. These reports contain valuable information
DMARC RUA Address - ( "rua=mailto:something@yourdomain.com" )
The "rua" tag specifies the email address to which aggregate reports should be sent. Aggregated reports provide valuable information about how your domain is being used and authenticated across remote recipient email servers and contain data about email traffic, authentication results, and sending sources.
...
By specifying the "rua" tag in your DMARC record, you enable the generation and delivery of aggregate reports, which are essential for monitoring and improving the security and integrity of your domain's email communications.