Frequently Asked Questions
Clear, honest answers about our WhatsApp integration, multi-agent collaboration, and billing.
What is Resend?
Resend is an official B2B customer relationship management and team inbox platform for WhatsApp. It allows teams to consolidate WhatsApp conversations, automate routine interactions, run broadcast campaigns, and collaborate seamlessly from a single workspace.
How does WhatsApp integration work?
Resend supports direct integration with Meta’s official WhatsApp Business Cloud API for enterprise deliverability and high message limits. For businesses with existing numbers, we also offer high-speed QR instance connectivity for rapid setup.
Can multiple agents respond from the same number?
Yes. Your entire team can log in simultaneously, view shared customer conversations, assign chats to specific agents, add internal collaboration notes, and reply without disconnecting other agents.
Can I connect multiple WhatsApp numbers?
Depending on your subscription tier, you can connect multiple official WhatsApp numbers to one central workspace and route incoming conversations by department (e.g. Sales, Support, Operations).
What is the difference between Cloud API and QR instances?
The Meta Cloud API connects directly through Meta’s servers, ensuring official verification, zero dependency on a physical phone, and unlimited scalability. QR instances allow quick connection of standard WhatsApp accounts without undergoing business verification.
Can I send marketing broadcasts and campaigns?
Yes. You can broadcast Meta-approved template messages to segmented contact lists. Resend includes built-in rate limiting and delivery pacing to protect your account health and reputation.
Can I automate conversations without code?
Yes. Our visual Flow Builder and keyword chatbot rules enable you to create automated multi-step decision trees, menu options, button replies, and conditional branches with an intuitive visual editor.
Does Resend have a Developer REST API?
Yes. Our public REST API (v1) and HMAC-SHA256 verified webhooks allow you to send messages, manage contacts, query analytics, and trigger external workflows from your internal systems, CRM, or e-commerce store.
How does billing work and can I cancel?
Billing is transparent and calculated using real-time SaaS rates. You can choose monthly or annual billing directly from your workspace dashboard, and upgrade, downgrade, or cancel your subscription at any time with prorated adjustments.
How does the free trial work?
New workspaces receive a 10-day trial with full access to test the multi-agent inbox, connect a WhatsApp number, build automated chatbot rules, and explore all core capabilities before committing.
Have a question not listed here?
Our engineering and customer support team is available to assist with custom integrations.
Ready to Scale Your Customer Conversations?
Streamline customer support, broadcast marketing, and conversational automation on WhatsApp.