> ## Documentation Index
> Fetch the complete documentation index at: https://docs.inboxapp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Limits and safety

> Daily DM caps and avoiding duplicate outreach.

<CardGroup cols={2}>
  <Card title="Daily DM limits" href="/help/campaigns/limits-and-safety/how-many-dms-can-i-send-per-day-on-x-twitter-with-inboxapp">
    How many new-contact DMs you can send per day on Pro, and what doesn’t count toward the cap.
  </Card>

  <Card title="Prevent messaging leads you’ve already contacted" href="/help/campaigns/limits-and-safety/how-to-prevent-messaging-leads-you-ve-already-contacted">
    Exclude the Contacted system list in campaign settings so prior outreach isn’t duplicated.
  </Card>

  <Card title="Stay within X rules" href="/help/outreach/stay-within-x-rules-for-outreach">
    Authenticity, spam policy, and habits that keep accounts healthy.
  </Card>
</CardGroup>