Overloop AI vs Reply.io: Sales Engagement Platform vs Cold Email Platform Comparison
Compare Overloop AI (sales engagement platform) and Reply.io (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Compare Overloop AI (sales engagement platform) and Reply.io (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Reviewed and updated September 2, 2026
Overloop AI vs Reply.io: Sales Engagement Platform vs Cold Email Platform Comparison
Sales teams building an outbound stack often weigh Overloop AI, a sales engagement platform for multi-channel sales outreach and engagement tracking, against Reply.io, a cold email platform for cold email outreach. They cover different parts of the workflow, so this comparison covers what each one does, what each one costs, and where they overlap.
The Quick Answer
Overloop AI is a sales engagement platform for multi-channel sales outreach and engagement tracking; Reply.io is a cold email platform for cold email outreach. By each vendor's own wording, Overloop AI lists ai-powered campaigns and 450m+ prospects database, and Reply.io lists unlimited email warmup and 1 billion b2b contacts database.
Reply.io offers a lower entry point at $59/mo compared to Overloop AI at $69/mo.
If your priority is coordinating outreach across email, phone, and social channels, Overloop AI is the one built for it; for sending campaigns that land in the inbox and generate replies, that is Reply.io. Many teams run one of each.
Understanding the Core Difference
Overloop AI is Sales prospecting platform that finds verified B2B contacts and runs personalized email and social outreach campaigns. Includes a 450M+ B2B contact database, an email finder and verifier, and AI-written campaigns and follow-ups.
Reply.io is AI-powered sales engagement platform with 1B+ B2B contacts, multichannel sequences, and AI SDR capabilities.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Starter
Email Volume
Overloop AI Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $69/mo | 250 credits per month per user | 1 email account per user; 3 campaigns |
| Growth | $99/mo | 500 credits per month per user | 3 email accounts per user; 10 campaigns |
| Enterprise | Contact Sales | 1,000 credits per month per user | Unlimited email accounts; Unlimited campaigns |
Source: Overloop AI Pricing
Reply.io Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Email Volume | $59/mo | 1,000 active contacts | Unlimited |
| Multichannel | $99/mo | Unlimited active contacts | Unlimited emails; 10 mailboxes |
| Agency Core | $210/mo | Unlimited clients & users | Unlimited mailboxes |
| AI SDR Starter | $800/mo | 1,000 active contacts | Unlimited mailboxes & warm-ups |
Source: Reply.io Pricing
Pricing Analysis
Reply.io offers the lower entry point ($59/mo vs $69/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Reply.io offers 4 pricing tiers compared to Overloop AI's 3, giving you more granularity as you scale.
Features Breakdown
- AI-powered campaigns
- 450M+ prospects database
- Verified Email Addresses
- Smart multichannel campaigns (Email + social)
- AI-powered Outreach Followups
- Email Finder & Verifier
- and 4 more listed below
- Unlimited email warmup
- 1 billion B2B contacts database
- Anti-spam & deliverability suite
- LinkedIn automation (add-on)
- SMS and calls (add-on)
- AI personalization
- and 3 more listed below
Overloop AI Key Features
- AI-powered campaigns
- 450M+ prospects database
- Verified Email Addresses
- Smart multichannel campaigns (Email + social)
- AI-powered Outreach Followups
- Email Finder & Verifier
- Chrome Extension for LinkedIn
- Conversations Inbox
- Email Warmup
- REST API
Reply.io Key Features
- Unlimited email warmup
- 1 billion B2B contacts database
- Anti-spam & deliverability suite
- LinkedIn automation (add-on)
- SMS and calls (add-on)
- AI personalization
- AI SDR capabilities
- Multi-workspace for agencies
- 14-day free trial
The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.
Listed only by Overloop AI
- AI-powered campaigns
- 450M+ prospects database
- Verified Email Addresses
- Smart multichannel campaigns (Email + social)
- AI-powered Outreach Followups
- Email Finder & Verifier
- Chrome Extension for LinkedIn
- Conversations Inbox
- Email Warmup
- REST API
Listed only by Reply.io
- Unlimited email warmup
- 1 billion B2B contacts database
- Anti-spam & deliverability suite
- LinkedIn automation (add-on)
- SMS and calls (add-on)
- AI personalization
- AI SDR capabilities
- Multi-workspace for agencies
- 14-day free trial
Integration Ecosystem
Overloop AI Integrations
Overloop AI connects with: HubSpot, Salesforce, Pipedrive, Zapier, Slack, Calendly, Gmail, Outlook.
Reply.io Integrations
Reply.io connects with: HubSpot, Salesforce, Pipedrive, Copper CRM, Zendesk Sell, Close, Zapier, Make, n8n.
Shared Integrations
Both tools integrate with: HubSpot, Salesforce, Pipedrive, Zapier.
Integrations listed only by Overloop AI: Slack, Calendly, Gmail, Outlook.
Integrations listed only by Reply.io: Copper CRM, Zendesk Sell, Close, Make, n8n.
Use Case Recommendations
Best Fit for Overloop AI
- Teams that need a wide feature set (10 capabilities listed)
- Enterprise buyers who prefer custom pricing and dedicated support
- SDR teams running multi-channel outreach sequences
- Sales managers tracking team engagement metrics
Best Fit for Reply.io
- Organizations with complex tech stacks needing broad integration support (9 integrations)
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
- SDR teams focused on pipeline generation
Feature Comparison Summary
| Feature | Overloop AI | Reply.io |
|---|---|---|
| Starting Price | $69/mo | $59/mo |
| Top Tier Price | Contact Sales | $800/mo |
| Total Features Listed | 10 | 9 |
| Integrations | 8 | 9 |
| Founded | 2015 | N/A |
Getting Started Checklist
- Define your multi-channel sales outreach and engagement tracking and cold email outreach requirements and monthly budget
- Estimate your expected sequences and engagement actions and email sending volume to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
Overloop AI serves the multi-channel sales outreach and engagement tracking side of an outbound stack and Reply.io the cold email outreach side. Reply.io offers a more accessible entry point at $59/mo, while Overloop AI starts at $69/mo. Your decision should weigh pricing against the specific features that matter most for your workflow.
Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.
Pricing and features verified as of September 2026. Visit Overloop AI and Reply.io for current information.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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