AI appointment setting for agencies, booked onto every client's calendar.
AI appointment setting for agencies means every client's replies are answered and turned into meetings without adding setters. Underfive gives each client its own workspace, agents, knowledge base and calendar, answers every reply in under 5 minutes, and books onto the client's calendar. Your team approves or hands off threads from Slack.
50 free credits · no credit card · updated October 2026
Agencies are judged on meetings booked, not emails sent. But setters do not scale linearly with clients, and a slow reply on one account costs the whole retainer. Underfive lets one team run appointment setting for every client.
How does it work?
- 1
A workspace per client
Connect each client's sending tools, calendar and Slack channel to its own workspace.
- 2
One agent per offer
Each client gets agents trained on their offer, tone and qualification rules.
- 3
Meetings land on their calendar
Interested replies are booked onto the client's calendar, and your team sees it all in one inbox.
How does it compare?
| Underfive | Setters per client | Client books themselves | |
|---|---|---|---|
| Response time | Under 5 minutes | Varies by setter | Often days |
| Cost as you add clients | Same plan, more workspaces | More headcount | Lost meetings |
| Client visibility | Slack approvals and alerts | Reports | Full, but slow |
| Books on the client's calendar | Yes | Yes | Yes |
| Consistency across clients | Same process everywhere | Depends on the setter | Depends on the client |
What you get with Underfive
Workspace per client
Separate agents, knowledge, calendars and Slack channels. Switch in one click.
Hand off to the client
Approve, edit, or hand a thread to the client right from Slack.
No cap on mailboxes
Connect every client mailbox and LinkedIn sender without per-seat fees.
Pricing that scales
Unlimited workspaces on the Agency plan; average cost per client drops as you grow.
Learn more Agencies →Pricing calculator →Slack →
Frequently asked questions
How does AI appointment setting work for an agency?
Each client gets its own workspace with its own agents, knowledge base, calendar and Slack channel. The agent answers that client's replies and books onto that client's calendar.
Can clients approve replies?
Yes. Drafts can wait for approval in the client's Slack channel, where your team or the client can approve, edit or take over the thread.
Which calendars can it book into?
Google Calendar, Outlook, Calendly, Cal.com, HubSpot or GoHighLevel, per client workspace.
How many clients can I run?
1 workspace on Professional, 5 on Growth, 10 on Business and unlimited on Agency. Team members and agents are unlimited on every plan.
What does it cost per client?
It depends on volume. Use the calculator on the pricing page; its default 5-client agency comes to about $50 per client a month.