Expandi + Underfive
Scale Expandi's LinkedIn outreach with AI-powered replies. Add your API key and Secret key in Underfive, then paste your webhook manually to each LinkedIn sender — the same URL works for every account.
One Webhook URL, Every Sender
Unlike HeyReach, Expandi does not auto-configure webhooks. You add your Underfive webhook manually — once per LinkedIn sender — using the same URL each time.
Same Underfive webhook URL — added separately in each sender's Expandi settings
Manual Setup Required
Expandi does not support auto-webhook configuration like HeyReach. You need to paste your Underfive webhook URL into Expandi for each LinkedIn sender individually.
- •Add your Expandi API key and Secret key in Underfive first — both are required
- •Copy your webhook URL once from Underfive workspace settings
- •Open each LinkedIn sender in Expandi and add the webhook manually
- •Use the same URL for every sender — no need for different links
- •Repeat for every new LinkedIn account you add to Expandi
Powerful Inbox Management
Everything you need to handle Expandi LinkedIn replies with AI
Multi-Sender Support
Connect every LinkedIn sender in Expandi — configure the webhook on each account and let Underfive handle replies at scale.
Human-Like Replies
AI reads conversation context and sends personalized LinkedIn responses that feel natural — not robotic.
Sub-5 Minute Responses
Respond to warm LinkedIn leads within 5 minutes, 24/7 — before they move on to a competitor.
Meeting Booking
AI negotiates times and books meetings directly on your calendar when prospects show interest.
Sender-Level Agents
Train your inbox agent per sender or at workspace level — match your brand voice across every LinkedIn account.
Smart Categorization
Automatically classify replies as Interested, Meeting Request, Not Interested, and more.
Get Started in 5 Steps
Connect Expandi to Underfive — add your account keys, then set up webhooks per LinkedIn sender
Set Up Underfive
Create a workspace and configure your AI agent with your sales playbook and calendar
Add Expandi Keys
Paste your Expandi API key and Secret key in Underfive — both are required at account level
Copy Webhook URL
Copy your Underfive webhook URL from workspace settings — you'll reuse this same link
Add Per Sender
In Expandi, open each LinkedIn sender and manually paste your Underfive webhook URL
Start Automating
Underfive reads replies from every connected sender and responds in under 5 minutes
Both Expandi Keys Required
Expandi provides two credentials at the account level: an API key and a Secret key. Add both in Underfive — the integration won't work with only one. Webhooks are configured separately in Expandi, per LinkedIn sender.
Configure Your Webhook
The webhook tells Underfive when a lead replies on LinkedIn. In Expandi, this must be added manually for each sender account.
- ✓Add your Expandi API key and Secret key in Underfive first — both are required
- ✓Get your unique webhook URL from Underfive workspace settings
- ✓Open each LinkedIn sender in Expandi → webhook settings
- ✓Paste the same Underfive webhook URL for every sender
- ✓Repeat for each new LinkedIn account you add
Configure each sender individually in Expandi
Ready to Scale LinkedIn?
Connect Expandi to Underfive, add your webhook per sender, and let AI handle every LinkedIn reply