# Connexease Gateway > Connexease Gateway Integration Document ## Docs - [Error Codes](https://docs.gateway.connexease.com/api-reference/error-codes.md): All error codes returned by the Connexease Gateway, with descriptions and recommended actions. - [Incoming Message Events](https://docs.gateway.connexease.com/api-reference/incoming-message-event.md): Full payload reference for every message type a user can send to your WhatsApp number. - [Media](https://docs.gateway.connexease.com/api-reference/media.md): Download media files received from users — images, audio, documents, videos, and stickers. - [Send Message](https://docs.gateway.connexease.com/api-reference/send-message.md): Send text, media, or template messages. Full parameter reference and code examples for every message type. - [Send WhatsApp Message](https://docs.gateway.connexease.com/api-reference/send-whatsapp-message.md): You can use this endpoint to send text messages, media (images, audio), or pre-approved templates to initiate conversations. - [Webhooks](https://docs.gateway.connexease.com/api-reference/webhooks.md): Receive incoming messages, delivery receipts, and system events in real time. - [Account](https://docs.gateway.connexease.com/dashboard/app/account.md): View your WhatsApp Business account details and monitor health metrics. - [Connect Meta](https://docs.gateway.connexease.com/dashboard/app/connect-meta.md): Link your Meta Business account to activate your Gateway app and start sending WhatsApp messages. - [Developer](https://docs.gateway.connexease.com/dashboard/app/developer.md): Manage API keys and configure webhooks for your Gateway app. - [Profile](https://docs.gateway.connexease.com/dashboard/app/profile.md): Manage your WhatsApp Business public profile shown to message recipients. - [Templates](https://docs.gateway.connexease.com/dashboard/app/templates.md): Create and manage WhatsApp message templates for your Gateway app. - [My Apps](https://docs.gateway.connexease.com/dashboard/apps.md): Create and manage your Gateway applications. - [Billing](https://docs.gateway.connexease.com/dashboard/billing.md): Manage your Gateway wallet, payment method, and view invoice history. - [Login](https://docs.gateway.connexease.com/dashboard/login.md): Sign in to your Connexease Gateway account. - [Dashboard Overview](https://docs.gateway.connexease.com/dashboard/overview.md): Understanding the main Gateway dashboard and navigation. - [Create an Account](https://docs.gateway.connexease.com/dashboard/register.md): Step-by-step guide to registering a new Connexease Gateway account. - [Authentication](https://docs.gateway.connexease.com/essentials/authentication.md): How to authenticate your requests and secure your webhook endpoint. - [Billing & Pricing](https://docs.gateway.connexease.com/essentials/billing-and-pricing.md): Connexease and Meta fee model, billing triggers, and pricing table. - [Rate Limits](https://docs.gateway.connexease.com/essentials/rate-limits.md): Per-API-key rate limit policies, response headers, and recommended strategies for high-volume campaigns. - [Quickstart](https://docs.gateway.connexease.com/quickstart.md): Send your first WhatsApp message in 5 minutes. ## OpenAPI Specs - [openapi](https://docs.gateway.connexease.com/openapi.json)