Overloop

Overloop is a sales prospecting platform that uses artificial intelligence to automate outbound workflows from lead sourcing through to booked meetings. Founded in 2015 in Belgium (originally as Prospect.io), Overloop has evolved from a Chrome extension for finding email addresses into a multi-channel outreach platform.

How It Works

Overloop combines a database of 450M+ verified B2B contacts with an AI engine that handles the most time-consuming parts of outbound sales. Users define their ideal customer profile, filtering by criteria such as location, company size, industry, and job title, and Overloop automatically sources matching prospects on an ongoing basis. The AI then analyzes each prospect's website, LinkedIn profile, and other publicly available information to generate personalized cold emails and LinkedIn messages, eliminating the need for manual copywriting.

Campaigns run across email and LinkedIn simultaneously, with AI-optimized sequencing that determines the ideal number of touchpoints, timing, and channel mix. Automated follow-ups adapt based on prospect behavior, such as email opens, link clicks, or replies.

Core Capabilities

Overloop's platform covers the full outbound prospecting cycle in a single tool. AI list building continuously finds new prospects that match defined criteria. Email verification runs in real-time to protect sender reputation and deliverability. A built-in email warmup feature gradually increases sending volume to establish domain trust. Smart segments automatically group prospects based on dynamic filters, updating as new contacts meet the criteria. Visual workflow automation connects actions across the platform, reducing repetitive manual tasks like CRM data entry.

A unified conversation inbox centralizes all prospect replies, whether from email or LinkedIn, so sales reps can manage responses without switching between tools. Conversion tracking allows teams to monitor when prospects take desired actions on their website, such as signing up for a trial or requesting a demo.

Analytics and Optimization

Campaign performance is tracked through detailed reporting on opens, clicks, replies, bounces, out-of-office responses, and conversions. Overloop also offers benchmarking, allowing teams to compare their campaign metrics against companies in the same industry and of similar size. Weekly performance summaries are delivered via email to keep stakeholders informed.

Integrations

Overloop connects natively with Salesforce, HubSpot, and Pipedrive for CRM synchronization, automatically creating leads, contacts, deals, and activities based on prospect actions. Additional integrations include Slack for real-time notifications, Calendly for meeting scheduling, Zapier for connecting to 1,000+ other applications, and a Google Chrome extension for enrolling prospects directly from LinkedIn. Email sending is supported through Gmail, Google Workspace, Microsoft Outlook, Office 365, and Exchange.

A REST API is available on higher-tier plans for custom integrations and workflows.

Who It's For

Overloop serves sales development representatives, account executives, sales managers, and growth teams at companies ranging from solo founders to mid-market organizations. It is particularly suited for B2B teams running outbound campaigns who want to consolidate prospecting, outreach, and campaign management into a single platform rather than stitching together multiple point solutions.

The platform supports AI-generated outreach in over 80 languages, making it a practical choice for teams selling into international markets. Overloop is GDPR compliant and holds CASA Tier 2 certification for handling sensitive data.