Overloop

Brussels-based sales prospecting, formerly Prospect.io, running since 2015 with a 450M+ contact database

Quick Overview

CompanyOverloop SRL
CategorySales Engagement Software
HeadquartersBrussels, Belgium
Founded2015, as Prospect.io
EU PresenceEU (Belgium)
Open SourceNot stated; closed-source SaaS
ComplianceNot stated by the vendor beyond EU incorporation
PricingFrom $69/user/month, published tiers
Free OptionNo permanent free tier; 7-day free trial
ReplacesOutreach, Apollo.io, Salesloft

Detailed Review

Overloop is the oldest company in this category. Vincenzo Ruggiero, still CEO today, started it in 2015 as a Chrome extension called Prospect.io; it was later rebranded Overloop and is now operated by Overloop SRL, registered at Rue des Pères Blancs 4 in Brussels, running as a fully remote team.

The product is an AI-powered sales prospecting and multichannel outreach platform built around a self-reported 450M+ contact database, with automated personalized email and LinkedIn campaigns, email verification and CRM integrations for HubSpot, Salesforce and Pipedrive.

Pricing is published in three tiers: Starter at $69/user/month (250 credits/user/month, 1 email account, 3 campaigns), Growth at $99/user/month (500 credits/user/month, 3 email accounts, 10 campaigns, HubSpot and Pipedrive integration), and a custom Enterprise tier (1,000 credits/user/month, unlimited email accounts and campaigns, Salesforce integration, dedicated support). A 7-day free trial is available rather than a longer 14-day window some competitors offer.

The credit-based model means the effective cost per prospect depends on how credits are consumed, which takes more budgeting effort to compare directly against Woodpecker.co's flat per-100-prospects price or Waalaxy's flat per-user price. For a team that wants the longest-running vendor in this category with a large built-in contact database, Overloop is the most established option.

What Overloop does well

  • Longest operating history in this category, running continuously since 2015
  • Self-reported 450M+ contact database built into the product
  • Published tiered pricing rather than a quote-only model
  • CRM integrations across HubSpot, Salesforce and Pipedrive

Where Overloop falls short

  • Credit-based pricing is harder to compare directly against flat per-seat or per-prospect pricing elsewhere in this category
  • Only a 7-day free trial versus 14 days at several competitors
  • Salesforce integration and dedicated support are reserved for the custom Enterprise tier

Standout feature. A decade of continuous operation under one founder, plus a contact database built directly into the product rather than sold as a separate data add-on.

Pros and Cons

Pros

  • Longest operating history in this category, running continuously since 2015
  • Self-reported 450M+ contact database built into the product
  • Published tiered pricing rather than a quote-only model
  • CRM integrations across HubSpot, Salesforce and Pipedrive

Cons

  • Credit-based pricing is harder to compare directly against flat per-seat or per-prospect pricing elsewhere in this category
  • Only a 7-day free trial versus 14 days at several competitors
  • Salesforce integration and dedicated support are reserved for the custom Enterprise tier

Alternatives to Overloop

See all Sales Engagement Software →

Frequently Asked Questions

What is Overloop?

Overloop is a Brussels-based sales prospecting and multichannel outreach platform, formerly known as Prospect.io, running since 2015 with a self-reported 450M+ contact database.

Where is Overloop based?

Overloop is operated by Overloop SRL, registered at Rue des Pères Blancs 4, 1040 Brussels, Belgium, which places it under EU (Belgium) law.

What does Overloop cost?

Starter $69/user/month: 250 credits/user/month, 1 email account, 3 campaigns. Growth $99/user/month: 500 credits/user/month, 3 email accounts, 10 campaigns, HubSpot & Pipedrive integration. Enterprise: custom, 1,000 credits/user/month, unlimited email accounts/campaigns, Salesforce integration.

Who is Overloop best for?

Buyers who value the longest operating history in this category and a large built-in contact database, rather than the newest product.

Is Overloop a good alternative to Outreach or Apollo.io?

Overloop is built as a European alternative to US-based sales engagement tools like Outreach and Apollo.io. It will not match their enterprise scale or forecasting depth in every respect, so check the review above for where it genuinely differs before switching.

How does Overloop compare to other Sales Engagement Software tools?

Overloop is one of several European Sales Engagement Software tools covered on this site. See the full Sales Engagement Software category page for how it ranks against its closest European competitors.

Who worked on this review

Three people touch every tool page: one writes it, a second edits it, and a third checks the compliance and pricing claims against the vendor's own documentation.

Sebastiaan Smits
Written by

Sebastiaan Smits

Founder & Editor · Netherlands

Selects the tools, writes the reviews, and checks where each company is actually established.

Marta Kowalczyk
Edited by

Marta Kowalczyk

Senior Analyst, Infrastructure & Developer Tools · Warsaw, Poland

Covers hosting, developer tooling and the practical side of moving workloads to European providers.

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Ingrid Halvorsen

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