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

# Configuration

> Core SendyKit environment and runtime setup

## Core environment

Typical self-hosted `.env` values:

```bash theme={null}
DB_HOST=localhost
DB_PORT=3306
DB_USER=sendy_user
DB_PASS=your_password
DB_NAME=sendy_database

SENDYKIT_LICENSE_KEY=sk_lic_xxxxxxxxxxxxx
SENDYKIT_STORE_URL=https://sendykit.dev
```

## Database rule

SendyKit uses the **same MySQL database** as Sendy.

Use the credentials from Sendy's `includes/config.php` unless you have intentionally separated access.

## Billing-related config

For current billing/machine-payment behavior, the main switches are:

```bash theme={null}
SENDYKIT_PAYMENT_SECRET=change-me
STRIPE_SECRET_KEY=sk_live_...
STRIPE_WEBHOOK_SECRET=whsec_...
SENDYKIT_ENFORCE_STRIPE_MACHINE_PAYMENT=true
```

## Offline mode

If you need an isolated or air-gapped mode:

```bash theme={null}
SENDYKIT_OFFLINE=true
```

That disables phone-home behavior and metered remote services.

## Recommended verification

After changing config:

```bash theme={null}
sendykit health
sendykit doctor
```

That catches broken DB credentials, missing services, and readiness issues faster than guessing.