If your company runs email on Google Workspace (formerly Google Apps), you can subscribe an inbox to receive abuse and postmaster complaints for your domain automatically. This is a one-time setup inside Google's admin console - not something you do in Act-On - but it's worth knowing about because those complaint addresses are what other mail providers and security teams use to flag problems with your sending.
abuse@ and postmaster@ addresses on your domain are where mailbox providers, security researchers, and recipients send complaints about suspicious or unwanted mail. If nobody is watching those inboxes, you miss early warning signs that your brand is being spoofed or that a campaign has gone wrong.abuse@ and postmaster@ inboxes. In Google Workspace, those are reserved - Google accepts the mail automatically - but by default nobody reads it. Subscribing routes it to someone who will.How Google handles abuse and postmaster mail
Google Workspace automatically accepts and monitors all messages sent to abuse@yourcompany.com and postmaster@yourcompany.com. These addresses are reserved and not available for general user assignment, but you can subscribe a user or group to receive copies of whatever arrives at them.
Set up the subscription
Google publishes the exact admin console steps, which change as their UI evolves. Follow their current instructions here: Subscribe to abuse and postmaster complaints (Google Workspace help).
The usual pattern is to route abuse@ and postmaster@ to a distribution group monitored by your IT, security, or deliverability team so complaints don't sit in a dead inbox.