The Instantly AI appointment setter that answers your Unibox for you
Connect your Instantly workspace and ReplySetter answers every reply in your Unibox within minutes, from the mailbox the lead wrote to. It handles questions and objections, sets the lead's interest status, and moves interested leads to a booked meeting, while you stay out of the inbox.
- Free account to build and test
- Instantly on Basic ($97/mo) and up
- connects with your Instantly API key
Your Instantly AI appointment setter, live in four steps
Connect Instantly
Paste an Instantly API v2 key and pick which mailboxes the setter handles. Recent replies sync in as context.
Write the playbook
Describe your offer, the objections you hear and when to send the booking link.
Test on real threads
Replay real Unibox threads in a sandbox, and read every thought and tool call before going live.
Go live
Start with approvals, then let it answer on its own. Every reply and status change is on the record.
Unibox replies answered in minutes, from the right mailbox
An Instantly reply webhook tells ReplySetter the moment a lead answers. The setter loads the whole thread, including your campaign emails, and replies from the mailbox the lead wrote to, so the conversation stays in one Unibox thread and your sending stays spread across your accounts.
- Reply webhook for instant pick-up, with a sync behind it
- Replies from the lead's own mailbox, in the Unibox thread
- Full thread context, including the campaign emails you sent
- Pick exactly which mailboxes the setter handles
Keeps every lead's interest status up to date
The setter sets Instantly's interest statuses as the conversation moves: Interested when they engage, Meeting booked when they book, Out of office or Wrong person when that's the answer. It uses your custom lead labels too, and creates a new one when your instructions name one that doesn't exist yet.
- Built-in statuses: Interested, Meeting booked, Won, Not interested and more
- Your custom lead labels, created if new
- Statuses feed your Instantly analytics and filters
- No reply to auto-responders or clear refusals
From “tell me more” to a meeting on the calendar
The setter answers questions from your knowledge base, qualifies the lead with your questions, and sends your booking link once they're ready, or books through a custom tool on your scheduling API. Leads that go quiet get a follow-up written fresh from the thread, stopped the moment they reply.
- Answers grounded in your offer and case studies
- Booking link sent only once the lead qualifies
- Or book directly through your scheduling API with a custom tool
- Follow-ups that stop as soon as the lead replies
AI appointment setter vs a human setter vs a chatbot
| Capability | ReplySetterAI appointment setter | Human setterin-house or outsourced | Basic chatbotscripted flows |
|---|---|---|---|
| Answers replies within minutes, 24/7 | |||
| Replies from the lead's own mailbox | |||
| Handles objections in context | |||
| Answers from your own documents | From memory | ||
| Sets Instantly interest statuses | Manually | ||
| Follows up until the lead replies | When remembered | Fixed sequence | |
| Every decision on the record | |||
| Cost per month | From $97 | $3,000+ | Varies |
What it does inside Instantly
API v2 connection
Connect an Instantly workspace with an API v2 key, optionally limited to the mailboxes you pick.
Reply webhook
A reply webhook starts the setter as soon as a lead answers one of your mailboxes.
Unibox threads
Whole threads are loaded, campaign emails included, so the setter knows exactly what was said.
Same-mailbox replies
Answers go out from the mailbox the lead wrote to, in the same Unibox thread.
Interest statuses & labels
Set built-in interest statuses and your custom lead labels, created when new.
Knowledge base
Pricing, case studies and FAQs the setter quotes instead of guessing.
Who uses a Instantly AI appointment setter
Lead gen agencies
Answer replies for every client workspace and report booked meetings, not reply counts.
B2B SaaS outbound
Handle pricing questions and “send more info”, then book the demo.
Service businesses
Qualify budget and timeline from a cold reply and book the discovery call.
Recruiters
Reply to interested candidates and clients, collect details and book the intro.
Founders doing outbound
Get out of the Unibox: the setter answers, qualifies and books.
High-volume senders
Many mailboxes, one setter, every reply answered from the right sender.
Instantly AI appointment setter: common questions
How does ReplySetter connect to Instantly?
With an Instantly API v2 key for your workspace. You can pick which mailboxes the setter handles, and it sets up a reply webhook with a sync behind it.
Does it reply from the mailbox the lead wrote to?
Yes. Replies go out through Instantly from the mailbox the lead replied to, in the same Unibox thread.
Can it set interest statuses in Instantly?
Yes. It sets the built-in interest statuses like Interested and Meeting booked, and your custom lead labels, creating a label if your instructions name a new one.
Will it reply to out-of-office messages?
No. The setter never replies to automated senders, and your instructions decide which replies it labels and leaves alone.
Can it book meetings directly?
Native calendar booking is built for GoHighLevel calendars. On Instantly, the setter sends your booking link once the lead qualifies, or books through a custom tool you connect to your scheduling tool's API.
Will it answer replies that came in before I connected?
No. Recent replies are synced for context, but the setter only answers new ones.
Which plan includes Instantly?
Instantly reply handling is on the Basic plan ($97/month) and up. You can build and test your setter on the free plan first.
Put an AI appointment setter on your Instantly Unibox
Connect your Instantly workspace, write the playbook, test it on real threads, and let it book meetings from every campaign.
More on how it works
Omnichannel inbox
Gmail, Outlook, SMS, WhatsApp, Instagram, cold-email tools and web chat, answered by one agent.
ExploreKnowledge bases
Documents chunked and embedded into pgvector, Supabase, Pinecone or Cloudflare Vectorize.
ExploreApprovals & autonomy
Suggest, draft or auto autonomy, an Approvals queue, business hours and follow-up sequences.
Explore