The send-notification function was using SMTP by default and failing with
ConnectionRefused errors. Added Mailketing API integration to match the
email provider used by other functions (send-auth-otp, send-email-v2).
Changes:
- Added sendViaMailketing() function with form-encoded body
- Added "mailketing" case to provider switch (now the default)
- Changed default provider from "smtp" to "mailketing"
- Reads API token from mailketing_api_token or api_token settings
This ensures order_created emails are sent successfully via Mailketing
just like other email notifications in the system.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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