Check Undelivered Contacts

Node	Check Undelivered Contacts
Description	This node checks the campaigns backend for any contacts still waiting to be delivered on the current flow, and routes the incoming message to one of two outputs depending on whether any are found. It doesn't change the message itself, only where it goes next.

Overview

Drop this node anywhere in a flow where you need to branch based on whether contacts are still pending delivery. When a message reaches it, the node asks the backend for the current undelivered-contact count for the flow, then sends the unmodified message out one of two paths depending on the result.

Category	Inputs	Outputs	Default Label
Contact Operations	1	2	Node name, or "Check Undelivered Contacts" if left blank

Configuration Options

Setting	Default	What it does
Name	(blank)	Optional label for the node.

There's nothing else to configure, the node works automatically based on the flow it's placed in.

Outputs

Output	Label	Sent when
1 (top)	true (contacts > 0)	At least one undelivered contact was found for this flow.
2 (bottom)	false (no contacts)	No undelivered contacts were found for this flow.

In both cases the original incoming message is passed through unchanged, only the routing differs.

What Happens When This Node Runs

When a message arrives, the node checks how many contacts are still waiting to be delivered for the current flow, then sends the message out the matching output. While it's running, the node's status dot gives you a quick read on what's happening:

Status	Meaning
🟡 Yellow dot	Checking for undelivered contacts
🟢 Green dot	Undelivered contacts found — routed to the true output
🔵 Blue dot	No undelivered contacts — routed to the false output
🔴 Red ring	Something went wrong while checking

If an error occurs, the message isn't sent on either output, nothing continues down the flow from this node until the next message arrives.