What is a multi-channel outbound campaign?

It's a sales strategy that coordinates touchpoints across different channels, like email and LinkedIn. Overloop lets you build and review combined sequences in one workflow.

What are credits used for?

Credits are consumed primarily for verifying email addresses and finding phone numbers. They are not used for sending messages.

Does the AI write perfect emails automatically?

The AI analyzes prospect data to draft highly personalized messages in your brand voice. However, all campaigns require human review before launch to ensure accuracy and tone.

What email warmup capabilities does it have?

Overloop includes a built-in warmup feature that sends low-volume traffic through a third-party network to help build domain reputation. Final deliverability still depends on many external factors.

How does the REST API work?

The REST API (available on Growth and Enterprise plans) allows you to programmatically manage prospects, campaigns, and lists for custom integrations with your own tech stack.

What's the difference between AI and Classic versions?

Overloop AI is the newer platform focused on AI-driven campaign generation and workflows. Overloop Classic is the legacy platform with core prospecting and outreach features.

Directory/Marketing/AI Sales Assistant/Overloop

Overloop

Overloop is an AI-driven sales engagement platform designed to automate and scale outbound prospecting. It leverages a B2B database of over 450 million contacts to find decision-makers, then uses AI to craft hyper-personalized email and LinkedIn messages in your brand voice, all within a single, reviewable workflow. Core capabilities include an AI SDR for automated prospecting, email finding and verification, smart campaign sequences with multichannel steps (email + LinkedIn), and performance tracking. It integrates with major CRMs like HubSpot, Salesforce, and Pipedrive, and offers a Chrome extension for LinkedIn prospecting. Targeted at sales teams, founders, and agencies, Overloop aims to reduce manual prospecting work, improve deliverability with built-in warm-up, and drive more meetings through personalized outreach that avoids generic templates.

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Sep 21, 2026

450M+ contactsAI outreachMultichannelEmail verificationLinkedIn automationChrome extensionCRM integrationSalesforce

Product information

Everything worth knowing about Overloop

The complete picture — from everyday features to the technical detail builders and IT folks dig for.

Core features

What it actually does

AI-Powered B2B Database

Leverage an AI-powered database of 450M+ B2B contacts to define your ideal customer profile and automatically build prospect lists for review.

Multi-Channel Outreach Automation

Configure and run automated, AI-generated outbound campaigns that combine email and LinkedIn steps in one reviewable workflow.

AI-Powered Email & LinkedIn Writing

AI analyzes prospect websites and social profiles to generate hyper-personalized cold emails and LinkedIn messages in your brand's voice.

Conversations Inbox

A built-in inbox centralizes all prospect conversations from email and LinkedIn, eliminating the need to switch between platforms.

Technical capabilities

Deliverability Controls

Includes email warmup, pacing, and shared/dedicated IP options for secondary domains to support campaign deliverability.

CRM & Platform Integrations

Native integrations with Salesforce, HubSpot, Pipedrive, Slack, and a REST API for workflow automation.

Must watch videos

Get your message into the inbox (and beyond) with Overloop

0:15

Tutorial0:15

Get your message into the inbox (and beyond) with Overloop

Still letting the spam filter block your outreach? Overloop helps your message reach the inbox and beyond — so you can save 90% of your time and grow faster. Create your first campaign in less than 5 minutes. Try Overloop today. --- View more details: overloop.com Book a demo with us: https://overloop.com/book-demo/

8:50

Tutorial8:50

Overloop AI Tutorial: Create a Campaign

00:00 Introduction 00:38 Step 1: Configuration 01:13 Step 2: Sequence & Pitch 05:18 Step 3: Enrollment & Database --- More info at: https://overloop.com Check out our plans: https://overloop.com/pricing/ Book a demo with us: https://overloop.com/book-demo/

Overloop AI in 5 Minutes: Master the Campaign Dashboard

5:29

Tutorial5:29

Overloop AI in 5 Minutes: Master the Campaign Dashboard

*UPDATE* Since a prospect's email address is now immediately visible, credits are not refunded anymore when disenrolling or excluding a prospect (cfr. 02:33). --- More info at: https://overloop.com Check out our plans: https://overloop.com/pricing/ Book a demo with us: https://overloop.com/book-demo/

Who uses it

Real use cases, no hype

AI-Powered SDR Automation

Automate prospecting, personalized outreach, and follow-ups so reps focus on closing deals.

Cold Email Campaigns

Run verified, multi-step cold email sequences with built-in warmup and tracking.

LinkedIn Outreach

Automate connection requests and personalized messages to grow your network at scale.

Lead Generation & List Building

Source targeted prospects from a massive database and enrich them with verified emails.

Agency Client Management

Manage multiple client outreach campaigns from a single platform with agency-specific workflows.

Event Follow-Up

Automate personalized post-event outreach to convert attendees into conversations.

What's great

Massive 450M+ B2B contact database
AI-generated hyper-personalized emails & LinkedIn messages
Integrated multichannel (Email + LinkedIn) campaign workflows
Configurable campaign steps with human review before launch

Technical strengths

Built-in email finder, verifier, and warmup tools
Direct CRM integrations (HubSpot, Pipedrive, Salesforce)
REST API for custom integrations (Growth+ plans)

Where it falls short

Credit-based pricing can get expensive at scale
AI writing quality requires human review and editing
Primary focus is sales prospecting, not full marketing automation
Advanced CRM syncs (like Salesforce) locked to Enterprise plan

Technical limitations

Deliverability is not guaranteed; depends on domain reputation
Shared IP for secondary domains on lower-tier plans

For technical folks

The deep-dive specs

FAQ

Includes technical Q&A

It uses an AI-powered database of 450M+ contacts. You define your ideal customer profile (ICP) with filters like location, industry, and job titles, and Overloop automatically builds and saves matching prospects for your campaign.