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Connecting your own X developer app (BYOK) raises your daily DM allowance to whatever your X API tier allows — Daily DM limits. You pay X directly for API usage.

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1. Set up your X developer account

Sign in to the X account that should own the developer account, then go to console.x.com. Accept the developer agreement and enter your use case if you haven’t already.

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2. Create a pay-per-use app

  1. Open Apps in the left sidebar and select the Pay Per Use category.
  2. Click Create App.
  3. Name the app, set the environment to Production, and click Create New Client Application.
  4. Click Close — you don’t need the consumer key, secret key, or bearer token.

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3. Set user authentication settings

Refresh the page, open your new app, and go to Keys & Tokens → User authentication settings → Set up. Click Save Changes, then copy the Client ID and Client Secret into Inboxapp. Those two values authenticate the integration.

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4. Purchase credits

In the X console, go to Billing → Credits and buy a prepaid amount. Turn on auto recharge so sending doesn’t stop mid-campaign.

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5. Authorize your accounts

Back in Inboxapp, authorize each X account individually, then enable the integration. Still stuck? Contact support from the app.