Success.ai vs Zeliq: Cold Email Platform vs Sales Engagement Platform Comparison
Compare Success.ai (cold email platform) and Zeliq (sales engagement platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Success.ai is a cold email platform built for high-volume outbound campaigns, with unlimited sending accounts, warmup, and a 700M+ contact database starting at $49/mo. Zeliq is a sales engagement platform for multichannel outreach across email, calls, and social, with a free entry tier and a $59/mo Starter plan. Many teams use both together.
Key takeaways
- Success.ai's entry plan, Lite, costs $49/mo and includes 5,000 emails per month with warmup on 10 accounts.
- Zeliq's free Basic plan allows importing up to 100 leads per month and running 2 active email-only sequences.
- Success.ai offers 4 pricing tiers while Zeliq offers 3, with Zeliq's Starter plan priced at $59/mo for 750 credits per month.
- Success.ai lists a 700M+ contact database with unlimited look-ups, while Zeliq lists multichannel sequences across email, call, and social as core features.
- Success.ai integrates with Zapier, HubSpot, Salesforce, Pipedrive, and Slack.
Reviewed and updated September 2, 2026
Success.ai vs Zeliq: Cold Email Platform vs Sales Engagement Platform Comparison
Success.ai is a cold email platform; Zeliq is a sales engagement platform. Whether you need one, the other, or both depends on which part of the workflow you are buying for: cold email outreach on one side, multi-channel sales outreach and engagement tracking on the other. This guide lays out what each vendor publishes.
The Quick Answer
Success.ai is a cold email platform for cold email outreach; Zeliq is a sales engagement platform for multi-channel sales outreach and engagement tracking. By each vendor's own wording, Success.ai lists ai sales & reply operators and 700m+ database with unlimited look-ups, and Zeliq lists multichannel sequences across email, call and social and lead search with basic and advanced filters.
Zeliq offers a lower entry point at $0/mo compared to Success.ai at $49/mo.
If your priority is sending campaigns that land in the inbox and generate replies, Success.ai is the one built for it; for coordinating outreach across email, phone, and social channels, that is Zeliq. Many teams run one of each.
Understanding the Core Difference
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.
Zeliq is Sales prospecting and engagement platform that combines a lead search and waterfall enrichment hub with multichannel sequences across email, calls and social, plus a connected dialer and CRM sync.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Lite
Basic
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
Zeliq Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Basic | Free | Import up to 100 leads per month | Run 2 active sequences (emails only) |
| Starter | $59/mo | 750 credits / month | 75 phone numbers or 750 emails |
| Custom | Contact Sales | Starts as from 24k credits/user/year | - |
Source: Zeliq Pricing
Pricing Analysis
Zeliq offers the lower entry point ($0/mo vs $49/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Success.ai offers 4 pricing tiers compared to Zeliq's 3, giving you more granularity as you scale.
Zeliq includes a free tier, which is helpful for evaluating the platform without upfront cost.
Features Breakdown
- 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
- Multichannel sequences across email, call and social
- Lead search with basic and advanced filters
- Enrichment Hub with waterfall enrichment
- Chrome extension for enrichment
- Lead engagement scoring
- Dialer connection for calling from the platform
- and 4 more listed below
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
Zeliq Key Features
- Multichannel sequences across email, call and social
- Lead search with basic and advanced filters
- Enrichment Hub with waterfall enrichment
- Chrome extension for enrichment
- Lead engagement scoring
- Dialer connection for calling from the platform
- Social automation
- SDR and manager cockpits for reporting
- Two-way CRM integration to pull and push records
- Enrichment API
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 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
Listed only by Zeliq
- Multichannel sequences across email, call and social
- Lead search with basic and advanced filters
- Enrichment Hub with waterfall enrichment
- Chrome extension for enrichment
- Lead engagement scoring
- Dialer connection for calling from the platform
- Social automation
- SDR and manager cockpits for reporting
- Two-way CRM integration to pull and push records
- Enrichment API
Integration Ecosystem
Success.ai Integrations
Success.ai connects with: Zapier, HubSpot, Salesforce, Pipedrive, Slack.
Zeliq Integrations
Zeliq connects with: HubSpot, Salesforce, Pipedrive, Aircall, Ringover, Gmail, Microsoft, API.
Shared Integrations
Both tools integrate with: HubSpot, Salesforce, Pipedrive.
Integrations listed only by Success.ai: Zapier, Slack.
Integrations listed only by Zeliq: Aircall, Ringover, Gmail, Microsoft, API.
Use Case Recommendations
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
Best Fit for Zeliq
- Budget-conscious teams looking for an affordable sales engagement platform
- Teams that need a wide feature set (10 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (8 integrations)
- Teams that want to start free and scale up as needs grow
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | Success.ai | Zeliq |
|---|---|---|
| Starting Price | $49/mo | Free |
| Top Tier Price | Contact Sales | Contact Sales |
| Total Features Listed | 9 | 10 |
| Integrations | 5 | 8 |
Getting Started Checklist
- Define your cold email outreach and multi-channel sales outreach and engagement tracking requirements and monthly budget
- Estimate your expected email sending volume and sequences and engagement actions 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
Success.ai serves the cold email outreach side of an outbound stack and Zeliq the multi-channel sales outreach and engagement tracking side. Zeliq offers a more accessible entry point, while Success.ai starts at $49/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 Success.ai and Zeliq for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Success.ai and Zeliq?
- Success.ai is a cold email platform focused on inbox delivery and reply generation, offering unlimited sending accounts, unlimited warmup, and a 700M+ contact database. Zeliq is a sales engagement platform focused on coordinating outreach across email, calls, and social channels, with features like a connected dialer and two-way CRM sync.
- Which platform is cheaper, Success.ai or Zeliq?
- Zeliq has the lower entry point with a free Basic plan, compared to Success.ai's Lite plan at $49/mo. However, Zeliq's paid Starter plan costs $59/mo for 750 credits per month, so cost comparisons depend on which tier and usage level you need.
- Does Success.ai include a contact database?
- Yes, Success.ai lists a 700M+ contact database with unlimited look-ups as one of its key features, along with data enrichment and email verification built in.
- Can Zeliq be used for calling and social outreach, not just email?
- Yes, Zeliq lists multichannel sequences across email, call, and social as a core feature, along with a dialer connection for calling directly from the platform and social automation.
- Should a company use both Success.ai and Zeliq?
- The article notes that many teams run one of each, since Success.ai is built for cold email campaigns that generate replies while Zeliq is built for coordinating outreach across multiple channels like email, phone, and social.
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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