In most places, sending marketing messages in bulk is legal if you have a lawful basis to contact the recipient, typically their consent, and you honour opt-out requests. The bigger risks come from messaging people who never agreed to hear from you: that can break privacy and marketing laws, and it is what gets numbers reported.
Laws such as GDPR in Europe and similar rules elsewhere generally require a lawful basis (often consent), clear identification of who you are, and an easy way to opt out. Business-to-business outreach has different rules from consumer marketing in some countries. Keeping clean lists and honouring opt-outs is both safer and more effective. Our guide to cold WhatsApp and GDPR goes deeper.
Separate from the law, WhatsApp's terms of service list "bulk messaging, auto-messaging, auto-dialing, and the like" among impermissible communications for regular accounts. That is why automated sending carries a real ban risk, and why warm-up, consent, pacing and list hygiene matter. The official WhatsApp Business API allows business messaging to people who opted in, with approved templates and per-message fees.
Wassuply honours "STOP" replies automatically, with global and per-campaign opt-out keywords, keeps an opt-out ledger and a blacklist that every campaign respects, and can add opt-out instructions as a footer to every message.
This page is general information, not legal advice. Check the rules in your country and industry.
Last updated October 24, 2026
Generally yes when recipients have consented, you identify yourself and you honour opt-outs. Messaging people without a lawful basis can break privacy law, and WhatsApp's terms restrict bulk messaging on regular accounts.
In most jurisdictions you need a lawful basis, usually consent, to send marketing messages. Wassuply honours STOP replies with global opt-out keywords, so anyone who asks to stop is excluded automatically.
No, this is general information. Always check the specific rules that apply in your country and industry.
The AI WhatsApp warmer and bulk sender that applies all of this automatically. One payment, no monthly fees.