Overloop AI vs Success.ai: Sales Engagement Platform vs Cold Email Platform Comparison
Compare Overloop AI (sales engagement platform) and Success.ai (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Overloop AI is a sales engagement platform for multi-channel outreach (email, phone, social) with a 450M+ contact database, priced from $69/mo. Success.ai is a cold email platform focused on inbox delivery and replies, with a 700M+ database and unlimited look-ups, priced from $49/mo. Teams needing both often run them together rather than choosing one.
Key takeaways
- Overloop AI's entry plan, Starter, costs $69/mo and includes 250 credits per user per month plus 1 email account and 3 campaigns.
- Success.ai's entry plan, Lite, costs $49/mo and includes 2,000 tokens per month plus 5,000 emails per month with warm-up on 10 accounts.
- Success.ai offers 4 pricing tiers (Lite, Starter, Pro, Enterprise) while Overloop AI offers 3 (Starter, Growth, Enterprise).
- Overloop AI lists a 450M+ prospects database while Success.ai lists a 700M+ database with unlimited look-ups.
- Both platforms integrate with HubSpot, Salesforce, Pipedrive, Zapier, and Slack, while Overloop AI additionally connects with Calendly, Gmail, and Outlook.
Reviewed and updated September 2, 2026
Overloop AI vs Success.ai: Sales Engagement Platform vs Cold Email Platform Comparison
Overloop AI (sales engagement platform) and Success.ai (cold email platform) sit next to each other in many outbound stacks. They are not substitutes for each other on every job, so this comparison covers pricing, features, and integrations for each and points out where the two meet.
The Quick Answer
Overloop AI is a sales engagement platform for multi-channel sales outreach and engagement tracking; Success.ai 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 Success.ai lists ai sales & reply operators and 700m+ database with unlimited look-ups.
Success.ai offers a lower entry point at $49/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 Success.ai. 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.
Success.ai is Cold email outreach platform with unlimited email sending accounts, unlimited warmup, a unified inbox and a 700M+ contact B2B database. AI operators write campaigns and draft replies, and a token balance meters data reveals, enrichment and AI actions.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Starter
Lite
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
Success.ai Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Lite | $49/mo | 2,000 tokens /mo for reveals, enrichment & AI; 700M+ database with unlimited look-ups | 5K emails /mo with warm-up on 10 accounts |
| Starter | $99/mo | 6,000 tokens /mo for reveals, enrichment & AI; 700M+ database with unlimited look-ups | 50K emails /mo with unlimited warm-up |
| Pro | $199/mo | 10,000 tokens /mo + advanced search filters | 150K emails /mo + advanced deliverability |
| Enterprise | Contact Sales | Custom tokens & unlimited email sending | Custom tokens & unlimited email sending |
Source: Success.ai Pricing
Pricing Analysis
Success.ai offers the lower entry point ($49/mo vs $69/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Success.ai 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
- AI Sales & Reply Operators
- 700M+ database with unlimited look-ups
- Unified InboxHub
- Data enrichment & email verification built in
- unlimited warm-up
- advanced search filters
- 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
Success.ai Key Features
- AI Sales & Reply Operators
- 700M+ database with unlimited look-ups
- Unified InboxHub
- Data enrichment & email verification built in
- unlimited warm-up
- advanced search filters
- advanced deliverability
- Website Visitor identification
- 5 deal pipelines
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 Success.ai
- AI Sales & Reply Operators
- 700M+ database with unlimited look-ups
- Unified InboxHub
- Data enrichment & email verification built in
- unlimited warm-up
- advanced search filters
- advanced deliverability
- Website Visitor identification
- 5 deal pipelines
Integration Ecosystem
Overloop AI Integrations
Overloop AI connects with: HubSpot, Salesforce, Pipedrive, Zapier, Slack, Calendly, Gmail, Outlook.
Success.ai Integrations
Success.ai connects with: Zapier, HubSpot, Salesforce, Pipedrive, Slack.
Shared Integrations
Both tools integrate with: HubSpot, Salesforce, Pipedrive, Zapier, Slack.
Integrations listed only by Overloop AI: Calendly, Gmail, Outlook.
Use Case Recommendations
Best Fit for Overloop AI
- Teams that need a wide feature set (10 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (8 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
Best Fit for Success.ai
- Budget-conscious teams looking for an affordable cold email platform
- Enterprise buyers who prefer custom pricing and dedicated support
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
Feature Comparison Summary
| Feature | Overloop AI | Success.ai |
|---|---|---|
| Starting Price | $69/mo | $49/mo |
| Top Tier Price | Contact Sales | Contact Sales |
| Total Features Listed | 10 | 9 |
| Integrations | 8 | 5 |
| 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 Success.ai the cold email outreach side. Success.ai offers a more accessible entry point at $49/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 Success.ai for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Overloop AI and Success.ai?
- Overloop AI is a sales engagement platform built for multi-channel outreach across email, phone, and social, with engagement tracking. Success.ai is a cold email platform focused on sending campaigns that land in the inbox and generate replies. They serve different core jobs, though many teams use both together in the same stack.
- Which is cheaper, Overloop AI or Success.ai?
- Success.ai has the lower entry price at $49/mo for its Lite plan, compared to Overloop AI's Starter plan at $69/mo. Success.ai also offers four pricing tiers versus Overloop AI's three, giving more granularity as usage scales.
- Does Overloop AI or Success.ai have a bigger contact database?
- Success.ai lists a larger database at 700M+ contacts with unlimited look-ups, while Overloop AI lists a 450M+ prospects database. Both figures come directly from each vendor's own published feature lists.
- What integrations do Overloop AI and Success.ai have in common?
- Both platforms integrate with HubSpot, Salesforce, Pipedrive, Zapier, and Slack. Overloop AI additionally connects with Calendly, Gmail, and Outlook, integrations that are not listed for Success.ai.
- Should I use Overloop AI, Success.ai, or both?
- If the priority is coordinating outreach across email, phone, and social channels, Overloop AI is built for that job. If the priority is sending campaigns that land in the inbox and generate replies, Success.ai is the better fit. Many teams run one of each rather than treating them as substitutes.
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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