New: meetings booked from every replySee how
HubSpot integration

Meetings booked in HubSpot. Contacts kept in sync.

Every reply lands in the Underfive Unified Inbox, where AI inbox agents answer in under 5 minutes, offer real times from your HubSpot availability, and book the meeting through HubSpot Meetings. The lead's HubSpot contact stays up to date.

50 free credits · no credit card · included on every plan

How does the HubSpot integration work?

  1. 1

    Connect HubSpot

    Connect your HubSpot account in one click with OAuth. If you have more than one HubSpot meeting link, pick the one the agent should book into.

  2. 2

    Point an inbox agent at it

    Choose HubSpot Meetings as the agent's calendar. Availability stays managed in HubSpot, and Underfive refreshes it for you.

  3. 3

    Replies turn into meetings in HubSpot

    When a lead is interested, the agent offers real times from your HubSpot availability, books the meeting, and keeps the contact up to date in HubSpot.

Calendar and CRM, from the same connection

Real availability

Times come from your HubSpot meeting link, so the agent never offers a slot you can't take.

Booked through HubSpot Meetings

The meeting is created by HubSpot's own scheduler, with your usual confirmation and reminders.

Contacts kept in sync

Leads who reply are added or updated as HubSpot contacts, with the booked meeting on their timeline.

Deal stage updates

Move the deal forward when a lead qualifies and again when the meeting is booked.

Bookings sync back

Meetings booked or changed in HubSpot show up on the thread in the Unified Inbox automatically.

One workspace per client

Agencies connect each client's HubSpot to its own workspace and agents.

HubSpot questions

Does Underfive work with HubSpot?

Yes. Underfive connects to HubSpot with OAuth. Inbox agents book meetings through your HubSpot meeting link, using your real HubSpot availability, and keep the lead's HubSpot contact up to date.

Which HubSpot calendar does the agent book into?

The agent books through HubSpot Meetings, HubSpot's scheduler. After connecting, you pick which meeting link to use if you have more than one, and the meeting lands on the calendar connected to that link.

Where is availability managed?

In HubSpot. Underfive reads the availability from your meeting link and refreshes it, so changes you make in HubSpot are picked up by the agent.

What happens in the HubSpot CRM?

Leads who reply are added or updated as HubSpot contacts, booked meetings appear on the contact's timeline, and the deal can move to the stage you choose when the lead qualifies and when the meeting is booked.

Do I need to replace my sequencer?

No. Keep sending from Smartlead, Instantly, Email Bison, HeyReach or your other tools. Underfive handles the replies and books into HubSpot.

What does it cost?

The HubSpot integration is included on every plan. Plans start at $60 a month, and you can start with 50 free credits and no credit card.

Turn replies into meetings booked in HubSpot.