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Core environment

Typical self-hosted .env values:

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

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Offline mode

If you need an isolated or air-gapped mode:
That disables phone-home behavior and metered remote services. After changing config:
That catches broken DB credentials, missing services, and readiness issues faster than guessing.