A directory can subscribe to newsletters and read them in its inbox.
Why
Industry newsletters are real strategic input that normally dies in a personal inbox where nothing can use it.
Subscribing
Each directory has its own inbox address. Use it when signing up, and issues arrive in the directory.
Reading
Newsletters appear in the Inbox, filterable to just newsletters, rendered in a sandbox so a marketing email cannot run anything against your workspace.
Managing
Settings → Signals lists subscriptions with their status and lets you remove them. See Signals and subscriptions.