Campaigns

Call people who reply to a campaign with Voice AI

4 min readUpdated October 2026Growth · Pro · Custom (needs the Voice Agent)
Turn on one switch when you create a campaign, and anyone who replies within 24 hours gets a call from your Voice AI agent a few minutes later. You set the most calls the campaign may make and the details the agent should mention. Afterwards, the campaign shows how many calls were placed and why anyone was not called.
Before you begin

The switch appears only when all of these are true:

  • Your workspace has the Voice Agent and an agent is linked. See Set up your AI Voice Agent.
  • You are a workspace admin. Teammates who are not admins do not see the option or the call results.
  • The campaign goes out on WhatsApp or RCS. Replies are what trigger the call, so channels that do not receive replies are left out.
Turn it on for a campaign
01
Start a campaign
On the Campaigns page, click New campaign (or use Quick send), choose your channel and template and add your recipients.
02
Switch on the calls
Tick Call people who reply with Voice AI. The hint under it reads "When someone replies to this campaign within 24 hours, your Voice AI agent calls them. One call per person per campaign, between 8 AM and 8 PM."
03
Fill in what the call is about
You get one box for each variable on your agent's Variables tab, for example Model / product name with the note "Voice AI mentions this on the call." Fill them in so the agent can say, for instance, which car or course the campaign is about.
04
Set the timing and the limit
Call after (minutes) is how long after the reply the call goes out: 1 to 120, starting at 5. Most calls for this campaign is required: 1 to 10,000, starting at 100. People who reply after this many calls will not be called.
05
Send the campaign
Send or schedule it as usual. Replies from then on can trigger calls.
Who gets called
SituationWhat happens
Someone replies within 24 hoursThey get one call a few minutes later, between 8 AM and 8 PM.
The same person replies againNo second call: one call per person per campaign.
The person has opted outNot called (shown as "Opted out").
The person had a Voice AI call in the last 3 daysNot called (shown as "Called in the last 3 days").
A teammate took over the chatNot called (shown as "Teammate took over").
The number is on Do Not DisturbNot called (shown as "On Do Not Disturb").
The campaign has reached its limitNot called (shown as "Over the call limit").
The call could not go out within 24 hours of the replyNot called (shown as "Reply too old").
Any other failureNot called (shown as "Could not call").
See the calls on the campaign

Open the campaign from the Campaigns list. Admins see a Voice AI calls card that starts with "People who reply within 24 hours get a call" and your limit. It shows:

  • Calls placed, Connected, Waiting to call and Not called. Connected means the call got an outcome other than not answered, busy, unreachable or voicemail.
  • Outcomes: a chip for each outcome the agent recorded, such as Interested or Not Interested, with a count.
  • Not called: a chip for each reason from the table above, with a count.
  • A note when the limit was reached, with how many people who replied were not called.

Until someone replies the card says "No replies yet. Calls start a few minutes after someone replies." Each lead's call summary and outcome also appear on the lead, as for any Voice Agent call.

What it costs

Each call is a normal Voice Agent call. See Set up your AI Voice Agent for how calls are charged. Set Most calls for this campaign to a number you are happy to pay for.

Common problems
?
I do not see the switch
Check that you are an admin, that the Voice Agent is on and has an agent linked, and that the campaign is WhatsApp or RCS.
?
Someone replied but was not called
Open the campaign and look at the Not called chips. The reason is one of those in the table above.
?
Calls are waiting and not going out
Calls go out between 8 AM and 8 PM. On an own Vaani account, calls also pause when your wallet cannot cover a minute; top up and they resume.