Messages not sending (WhatsApp/SMS/Email)

**Troubleshooting by tool:**

**WhatsApp:**
- Check WhatsApp connected on device
- Verify phone has internet
- Ensure not exceeding 200 messages/day
- Check recipients haven't blocked you

**SMS:**
- Android device online?
- App running in background?
- SIM card active?
- Sufficient SMS balance with carrier?

**Email (MailBots):**
- AWS SES credentials correct?
- Email/domain verified in AWS?
- Check spam score of email content
- Review AWS SES sending limits

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