Respond.io builds helpdesks for support tickets. SendRad builds AI sales agents that qualify buyers, follow up when leads go quiet, and book revenue on your calendar.
Respond.io is an omnichannel customer support platform designed for large support teams handling tickets across 10+ channels, starting at $79–$159/mo with per-contact fees. SendRad is the dedicated sales alternative: an autonomous AI sales agent focused on WhatsApp, Instagram, and Messenger that qualifies leads, follows up persistently, and books appointments on Google Calendar at $29/mo.
Best for
Not best for
Sales-first
Built to close, not ticket
$29/mo
Pro vs $159/mo Growth
5 sec
Average reply time
Replies, follow-ups, and booked calls. That is the point.
Respond.io organizes support queues. SendRad qualifies prospects and books revenue directly onto your Google Calendar.
Respond.io locks AI agents and automation behind its $159/mo Growth tier. SendRad gives you autonomous AI sales agents starting at $29/mo.
Quiet leads get intelligent follow-up nudges based on what was said, without building complex multi-step webhook trees.
Side by side for teams picking a DM sales tool.
| Feature | SendRad | Respond.io |
|---|---|---|
| Primary focus | Revenue generation, lead qualification & calendar booking | Customer support ticketing & omnichannel helpdesk |
| Entry price for AI agents | Pro plan at $29/mo (includes 7-day free trial) | Growth plan at $159/mo (Starter has no AI agents) |
| Google Calendar booking | Native in-thread booking from real availability | Requires external webhooks or third-party links |
| Autonomous sales follow-ups | Built-in context-aware nudges for silent leads | Requires custom workflow logic on higher tiers |
| Comment-to-DM automation | Native on Instagram & Facebook posts/reels | Supported via workflow builder |
| Core sales channels | WhatsApp, Instagram DMs, Messenger (One inbox) | 10+ channels (Telegram, LINE, Viber, Email, SMS) |
| Lead CRM & notes | Automatic qualification notes (budget, intent, fit) | Contact custom fields & manual agent tags |
| Target audience | Coaches, creators, SaaS founders, SMB sales teams | Mid-market & enterprise customer support centers |
Respond.io is built around ticketing, agent assignment, and customer support queues. SendRad is built around sales pipeline outcomes: rapid reply, in-thread qualification, objection handling, and booking calls. If your primary goal is converting leads into booked revenue, a sales agent outperforms a support helpdesk.
Most leads go quiet before buying. In Respond.io, setting up multi-day re-engagement requires complex workflows on higher tiers ($159+/mo). SendRad includes autonomous, context-aware follow-ups that nudge leads until they book or opt out, with zero flow configuration.
SendRad connects natively to Google Calendar to check real-time availability and book appointments right inside WhatsApp, Instagram, or Messenger. Respond.io requires external calendar integrations or manual link drops that drop conversion.
Respond.io starts at $79/mo for Starter with zero AI agents or workflows, and jumps to $159/mo on Growth to unlock automation, plus $12 per 100 extra monthly active contacts. SendRad Pro is $29/mo with a 7-day trial and includes shared AI credits across your core sales channels.
If you need a 20-agent support helpdesk across 10 apps, pick Respond.io. If you want to turn social DMs into booked sales, pick SendRad.
Upload your offer, pricing, FAQs, and booking criteria. Your agent is ready to sell in about 4 minutes.
Link WhatsApp, Instagram, Messenger, and Google Calendar. Let SendRad qualify and close while you sleep.
Try SendRad free. Replies in about 5 seconds, follow-ups on a schedule you set, and more booked calls without another hire.