The appointment setter for outbound, from the first reply to the booked call.
An appointment setter for outbound handles everything after a prospect replies to your cold email or LinkedIn campaign: answering questions, proposing times and booking the meeting. Underfive does this automatically. It plugs into your existing sequencer, replies from the original mailbox in under 5 minutes, and books onto your calendar.
50 free credits · no credit card · updated October 2026
Outbound teams spend on lists, domains and copy, then lose the reply in a shared inbox. Interest cools by the hour. An outbound appointment setter closes that gap without changing how you send.
How does it work?
- 1
Keep your sequencer
Smartlead, Instantly, Email Bison, PlusVibe, Lemlist, HeyReach and more keep sending as they do today.
- 2
Replies route to Underfive
Every reply from every campaign and client lands in one Unified Inbox, sorted by what the lead said.
- 3
Meetings get booked
Interested leads get an answer from the same mailbox, real times and an invite.
How does it compare?
| Underfive | Checking sequencer inboxes | Outsourced setter | |
|---|---|---|---|
| Response time | Under 5 minutes | Hours, sometimes days | Their working hours |
| Replies from | Your original mailbox or profile | Your mailbox | Varies |
| Multiple tools and clients | One inbox for all | One tab per tool | Shared logins |
| Books on your calendar | Yes | Manually | Yes |
| Cost model | Plan from $60 a month | Your team's time | Retainer or per meeting |
What you get with Underfive
Built for cold replies
Handles "send more info", pricing questions, referrals and "not now" the way a good SDR would.
Same thread, same sender
Answers go out from the mailbox or LinkedIn profile the prospect replied to.
Speed that matters
Leads contacted within an hour are far more likely to qualify, so replies go out in minutes.
Calendar of your choice
Books into Google Calendar, Outlook, Calendly, Cal.com, HubSpot or GoHighLevel.
Learn more Unified Inbox →Integrations →Follow-ups →
Frequently asked questions
What does an appointment setter for outbound do?
It handles every reply to your outbound campaigns: answers questions, overcomes objections, proposes times and books the meeting, so your team only joins the calls.
Do I need to change my sequencer?
No. Underfive connects to the tools you already use and only takes over once a prospect replies.
Does it work for LinkedIn outreach too?
Yes. Replies from HeyReach, Expandi, Aimfox and GetSales.io land in the same inbox and are answered in the LinkedIn thread.
How fast does it respond?
In under 5 minutes, 24/7, in the prospect's language and time zone.
Can I review replies before they go out?
Yes. Each reply category can auto-send or wait for approval in the app or in Slack.