> ## Documentation Index > Fetch the complete documentation index at: https://docs.claimr.io/llms.txt > Use this file to discover all available pages before exploring further. # Codes: supercharge your campaigns with invite and secret codes > See how invite codes, secret codes, and gift codes each drive reach, engagement, and tracking in your claimr campaigns. claimr offers **three code types** — **invite, secret, and gift** — designed to supercharge your campaigns and deliver measurable results. **Benefits of using codes:** * **Grow your reach**: Extend your campaign's reach beyond your immediate audience as users share codes within their networks, organically expanding your reach through word-of-mouth marketing. * **Track your success**: Gain valuable insights into your campaign's performance by assigning unique codes to different channels or promotions. Track the source of new participants and measure the effectiveness of your marketing efforts. * **Boost engagement**: Create a sense of exclusivity and reward that motivates users to actively participate in your campaign and share it with others, fostering a vibrant and engaged community. * **Targeted incentives**: Tailor rewards and incentives to specific user segments or actions, nurturing loyalty and encouraging continued participation. Hide codes in your content and reward users who find them. Generate and distribute codes that control access to your campaign. Deliver tangible, redeemable rewards to your participants.