Documentation

Callengo Documentation

Everything you need to set up, configure, and get the most out of your AI-powered calling campaigns.

Getting Started

Go from sign-up to your first completed call in under five minutes. Here is the recommended workflow.

Create your account

Import contacts

Upload a CSV, Excel, JSON, XML, or TXT file. Callengo normalizes phone numbers and deduplicates automatically.

Choose an AI agent

Select Data Validation, Appointment Confirmation, or Lead Qualification. Customize the script and voice.

Launch your campaign

Set scheduling preferences, review your settings, and hit Start. Monitor results in real-time from the dashboard.

Create free account

AI Agents

Callengo offers three specialized agent types, each designed to solve a specific business problem. Pick the one that matches your use case.

Data Validation Agent

Verify and update contact information in your database through automated outbound calls. Ideal for keeping CRM data accurate and reducing bounce rates.

Capabilities

Phone number verification
Email validation and updates
Address confirmation
Business status verification
Decision maker identification
Automatic follow-ups for no-answers

Call Outcomes

Fully VerifiedResearch NeededNo AnswerWrong NumberNumber DisconnectedVoicemail LeftFor Callback

Appointment Confirmation Agent

Reduce no-shows by automatically confirming appointments 24-48 hours in advance. Handles rescheduling and cancellation on the spot.

Capabilities

24-48 hour advance confirmation calls
Rescheduling support during the call
Cancellation handling
Multi-attempt outreach
Calendar synchronization
Custom confirmation scripts

Call Outcomes

ConfirmedRescheduledCancelledNo AnswerVoicemail LeftCallback Requested

Lead Qualification Agent

Score and rank leads so your team focuses on buyers, not browsers. Uses BANT methodology and custom questions to classify leads automatically.

Capabilities

BANT qualification methodology
Custom qualification questions
Lead scoring and ranking (0-100)
Hot / warm / cold classification
CRM updates with scores and notes
Warm handoff for high-score leads

Call Outcomes

Hot Lead (80-100)Warm Lead (50-79)Cold Lead (0-49)Callback RequestedNo AnswerNot Interested

Voice Library

Choose from 77+ professional AI voices across 6 languages. Every voice is tuned for natural, professional conversations.

American English

30 voices available

MayaRyanNatMasonJane

British English

22 voices available

AliceEmilyOscarSophieLucas

Australian English

7 voices available

CharlotteJack

Spanish

4 voices available

HelenaRosaMariam

French

7 voices available

JuliettePierreAnna

German

2 voices available

HansKlaus

Portuguese

3 voices available

BeatrizMiguel

Italian

2 voices available

GiuliaMarco

Background Audio

All calls include subtle office background sounds to create a natural, professional atmosphere. This increases trust and reduces the perception of talking to a robot.

Data Import & Export

Import contacts from any system using standard file formats. Callengo normalizes phone numbers, removes duplicates, and maps fields automatically.

Supported Formats

CSV

.csv

Comma-separated values, the most common format

Excel

.xlsx, .xls

Microsoft Excel spreadsheets

JSON

.json

JavaScript Object Notation

XML

.xml

Extensible Markup Language

TXT

.txt

Tab or comma delimited text files

Contact Fields

phone_number

Phone number to call (auto-normalized)

Required

contact_name

Name of the person to contact

company_name

Business or organization name

email

Email address

address

Street address

city

City name

state

State or province

zip_code

Postal or ZIP code

tags

Custom tags for segmentation

custom_fields

Any additional custom data

Integrations

Connect Callengo to the tools you already use. All 16 integrations are configured directly from your dashboard, no coding required. Explore all integrations →

Google Calendar

Active

Sync appointments and availability in real time

CalendarStarter+

Outlook Calendar

Active

Two-way calendar sync with Microsoft 365

CalendarStarter+

Google Meet

Active

Auto-generate Meet links for confirmed appointments

VideoStarter+

Zoom

Active

Create Zoom meetings when appointments are confirmed

VideoStarter+

Microsoft Teams

Active

Schedule Teams meetings from call outcomes

VideoBusiness+

HubSpot

Active

Push call outcomes and lead scores to HubSpot contacts

CRMBusiness+

Pipedrive

Active

Update deals and contacts in Pipedrive automatically

CRMBusiness+

Zoho CRM

Active

Sync call data and lead status with Zoho CRM

CRMBusiness+

Salesforce

Active

Enterprise-grade Salesforce integration with custom field mapping

CRMTeams+

Microsoft Dynamics 365

Active

Bi-directional sync with Dynamics 365 entities

CRMTeams+

Clio

Active

Legal practice management. Sync client and matter data

CRMTeams+

Slack

Active

Get real-time call notifications and summaries in Slack channels

CommunicationStarter+

Google Sheets

Active

Export call results directly to Google Sheets

ProductivityStarter+

SimplyBook.me

Active

Sync bookings and availability with SimplyBook.me

ProductivityBusiness+

Stripe

Active

Trigger calls based on Stripe payment events

ProductivityBusiness+

Webhooks

Active

Send real-time POST requests to any URL when calls complete

AutomationBusiness+

Webhook Payload Example

When a call completes, Callengo sends a POST request to your configured URL with the following JSON body.

{
  "event": "call.completed",
  "call_id": "clg_8f3a2b1c-d4e5-6789-abcd-ef0123456789",
  "campaign_id": "cmp_a1b2c3d4",
  "status": "completed",
  "call_length_seconds": 142,
  "answered_by": "human",
  "contact": {
    "phone_number": "+14155551234",
    "contact_name": "Jane Smith",
    "company_name": "Acme Corp"
  },
  "analysis": {
    "outcome": "Verified",
    "extracted_data": {
      "email_confirmed": true,
      "new_phone": null,
      "notes": "Contact confirmed all details."
    },
    "sentiment": "positive"
  },
  "recording_url": "https://recordings.callengo.com/clg_8f3a2b1c.mp3",
  "transcript_url": "https://recordings.callengo.com/clg_8f3a2b1c.txt",
  "timestamp": "2026-03-08T14:32:10Z"
}

View full integrations documentation

Plans & Limits

Reference table for every tier. Visit the pricing page for a full comparison.

Plan	Price	Annual	Minutes	Agents	Users	Max/Call
Free	$0	$0	15 min (one-time)	1	1	3 min
Starter	$99/mo	$87/mo	250/month	1	1	5 min
Growth	$179/mo	$157/mo	500/month	3	2	7 min
BusinessPopular	$299/mo	$263/mo	1,000/month	Unlimited	3	10 min
Teams	$649/mo	$571/mo	3,000/month	Unlimited	5 ($79/extra)	15 min
Enterprise	Starting $1,499/mo	Custom	Custom	Unlimited	Custom	Custom

Add-ons

Dedicated Number

$15/mo

Own dedicated outbound phone number (transferred via Bland sub-account)

Recording Vault

$12/mo

Extends call recording retention from 30 days → 12 months

Calls Booster

$35/mo

+150 calls (~+225 min) per month. Stackable.

Start for free View full pricing comparison

Campaign Management

Campaigns are the core unit of work in Callengo. Each campaign targets a list of contacts with a specific AI agent and configuration.

Creating a Campaign

From the dashboard, click New Campaign. Give it a name, select an AI agent type, and choose a contact list. You can create lists from imported data or pick from existing segments.

Configuring the Agent

Customize the call script, set the voice and language, adjust the maximum call duration, and define call outcomes that match your workflow. Preview the agent before launching.

Scheduling & Throttling

Set calling hours (respecting time zones), choose weekday/weekend preferences, and configure the number of concurrent calls. Callengo automatically paces outreach to stay within your plan limits.

Monitoring & Pausing

Once a campaign is running, the live dashboard shows real-time call statuses, answer rates, and outcome breakdowns. Pause, resume, or stop a campaign at any time.

Retries & Follow-ups

Configure automatic retry rules for unanswered calls. Set the number of attempts, delay between retries, and alternate contact numbers if available.

Analytics & Reporting

Understand your calling performance at a glance with built-in dashboards, exportable reports, and AI-powered insights.

Campaign Dashboard

Real-time overview of active campaigns including calls made, answer rates, average call duration, and outcome distribution.

Call-Level Detail

Drill into individual calls to see full transcripts, AI analysis, sentiment scores, and extracted data fields.

Outcome Breakdown

Visualize how calls resolved: verified, rescheduled, no answer, hot leads, and more, with filterable charts.

Time & Cost Analysis

Track minutes consumed, cost-per-contact, and cost-per-outcome to optimize your budget across campaigns.

Export & Sharing

Download reports as CSV or PDF. Push analytics data to Google Sheets or your CRM via integrations.

AI Insights

Callengo surfaces patterns across calls: common objections, optimal call times, and script performance comparisons.

Need more help?

Our support team is ready to assist you with any questions.

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