Respond.io is a mature omnichannel inbox with AI agents and calling. Flowlines covers the same channels with an AI agent, a built-in CRM with pipelines, booking inside the chat and native Facebook Lead Ads. Here is how they compare, using Respond.io's own website.
Respond.io details come from Respond.io’s own website, checked on 27 October 2026. Where their site does not say either way, we write “Not stated” rather than guess.
| Feature | Flowlines | Respond.io |
|---|---|---|
| AI agent that answers from your own content | Yes | YesSource |
| Official WhatsApp Business API | Yes | YesSource |
| Instagram DMs | Yes | YesSource |
| Facebook Messenger | Yes | YesSource |
| Telegram | YesBots and personal accounts | YesSource |
| Email as a channel | Yes | YesSource |
| Website live chat widget | Yes | YesSource |
| Shared team inbox with assignment | Yes | YesSource |
| Built-in CRM with pipelines and stages | YesAgent changes to fields and stages need a person's approval | YesSource |
| No-code workflow builder | Yes | YesSource |
| WhatsApp broadcasts to segments | Yes | YesSource |
| Appointment booking inside the chat | YesCal.com | YesSource |
| AI-to-human handover | YesWith an AI summary note | YesSource |
| Replies in the customer's language | Yes | YesWhen told to in the AI Agent's instructions.Source |
| Public API | Yes | YesSource |
| MCP server for AI assistants | Yes | YesSource |
| Facebook Lead Ads integration | YesFacebook Pages | PartlyNative Lead Ads integration is on their roadmap; Zapier or Make in the meantime.Source |
| Self-hosted or open source | No | Not stated |
A WhatsApp number can only be connected to one provider at a time, so start with Instagram, web chat or a second number while Respond.io keeps running.
Upload your documents, FAQs and website so the agent answers from the same content your team uses.
Recreate your main follow-ups and routing in the workflow builder, starting from the built-in templates.
Once you are happy, connect your main WhatsApp number to Flowlines. We can help with the move.
New lead-ad leads arrive automatically and can start a WhatsApp follow-up straight away.
The agent offers real open slots from Cal.com and books, reschedules or cancels inside the conversation.
Contacts, leads, custom pipeline stages and tasks live next to the conversation. Changes the agent proposes are approved by your team.
Reply-aware waits, approved templates after 24 hours, tasks and pipeline moves in one visual builder.
A fair comparison starts with what the other product does well.
Respond.io is a trademark of its owner. This page is written by Flowlines; Respond.io details were taken from Respond.io’s website on 27 October 2026 and may have changed since. Spot something out of date? Email support@flowlines.io and we will correct it.