Mailivery vs Success.ai: Email Warmup Tool vs Cold Email Platform Comparison
Compare Mailivery (email warmup tool) and Success.ai (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Mailivery is an email warmup tool starting at $29 per month, built for email domain warming and deliverability through peer to peer inbox activity. Success.ai is a cold email outreach platform starting at $49 per month, offering AI sales and reply operators plus a 700M+ contact database. Many teams use both together for different parts of the outreach workflow.
Key takeaways
- Mailivery's entry plan costs $29 per month with unlimited connected mailboxes and 200 shared warm-up emails per day.
- Success.ai's entry plan costs $49 per month with 2,000 monthly tokens and 5,000 emails per month across 10 warm-up accounts.
- Success.ai offers four pricing tiers, Lite, Starter, Pro, and Enterprise, compared to Mailivery's three tiers, Starter, Professional, and Business.
- Mailivery integrates with Gmail, GSuite, Microsoft 365, SMTP, and SendGrid, while Success.ai integrates with Zapier, HubSpot, Salesforce, Pipedrive, and Slack.
- Success.ai lists a 700M+ contact B2B database with unlimited look-ups as a core feature not listed by Mailivery.
Reviewed and updated September 2, 2026
Mailivery vs Success.ai: Email Warmup Tool vs Cold Email Platform Comparison
Mailivery is an email warmup tool; Success.ai is a cold email platform. Whether you need one, the other, or both depends on which part of the workflow you are buying for: email domain warming and deliverability on one side, cold email outreach on the other. This guide lays out what each vendor publishes.
The Quick Answer
Mailivery is an email warmup tool for email domain warming and deliverability; Success.ai is a cold email platform for cold email outreach. By each vendor's own wording, Mailivery lists email warm up and inbox placement test, and Success.ai lists ai sales & reply operators and 700m+ database with unlimited look-ups.
Mailivery offers a lower entry point at $29/mo compared to Success.ai at $49/mo.
If your priority is building sender reputation and improving inbox placement, Mailivery 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
Mailivery is Email warm-up and deliverability tool that improves sender reputation by holding real conversations in your inbox through a peer to peer network of active mailboxes. Plans are priced on total daily warm-up volume and allow unlimited connected mailboxes, with inbox placement tests, blacklist monitoring and email verification included.
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
Mailivery Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $29/mo | UNLIMITED mailboxes | 200 warm-up emails / day (shared) |
| Professional | $79/mo | UNLIMITED mailboxes | 800 warm-up emails / day (shared) |
| Business | $199/mo | UNLIMITED mailboxes | 2,500 warm-up emails / day (shared) |
Source: Mailivery 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
Mailivery is more affordable at the entry level ($29/mo vs $49/mo). For teams with tight budgets or those just getting started with email domain warming and deliverability and cold email outreach, this price difference matters.
Success.ai offers 4 pricing tiers compared to Mailivery's 3, giving you more granularity as you scale.
Features Breakdown
- Email Warm Up
- Inbox Placement Test
- Blacklist Monitoring
- Email Verification
- Custom Warm Up Templates
- Real email text & AI generated email content
- and 3 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
Mailivery Key Features
- Email Warm Up
- Inbox Placement Test
- Blacklist Monitoring
- Email Verification
- Custom Warm Up Templates
- Real email text & AI generated email content
- Email scheduling & balancing to mimic natural behavior
- Peer2Peer interactions
- Automatic email reading and moving so that we don't jam your inbox
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 Mailivery
- Email Warm Up
- Inbox Placement Test
- Blacklist Monitoring
- Email Verification
- Custom Warm Up Templates
- Real email text & AI generated email content
- Email scheduling & balancing to mimic natural behavior
- Peer2Peer interactions
- Automatic email reading and moving so that we don't jam your inbox
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
Mailivery Integrations
Mailivery connects with: Gmail, GSuite, Microsoft 365, SMTP, SendGrid.
Success.ai Integrations
Success.ai connects with: Zapier, HubSpot, Salesforce, Pipedrive, Slack.
Integrations listed only by Mailivery: Gmail, GSuite, Microsoft 365, SMTP, SendGrid.
Integrations listed only by Success.ai: Zapier, HubSpot, Salesforce, Pipedrive, Slack.
Use Case Recommendations
Best Fit for Mailivery
- Budget-conscious teams looking for an affordable email warmup tool
- Teams launching new email domains for outreach
- Organizations recovering from deliverability issues
- Agencies managing warmup across multiple client domains
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 | Mailivery | Success.ai |
|---|---|---|
| Starting Price | $29/mo | $49/mo |
| Top Tier Price | $199/mo | Contact Sales |
| Total Features Listed | 9 | 9 |
| Integrations | 5 | 5 |
Getting Started Checklist
- Define your email domain warming and deliverability and cold email outreach requirements and monthly budget
- Estimate your expected warmup email volume 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
Mailivery serves the email domain warming and deliverability side of an outbound stack and Success.ai the cold email outreach side. Mailivery offers a more accessible entry point at $29/mo, 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 Mailivery and Success.ai for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Mailivery and Success.ai?
- Mailivery is an email warmup tool focused on domain warming and deliverability through a peer to peer network of active mailboxes. Success.ai is a cold email outreach platform with AI sales and reply operators, a unified inbox, and a 700M+ contact database. They solve different parts of the outreach workflow.
- Which is cheaper, Mailivery or Success.ai?
- Mailivery has a lower entry price at $29 per month compared to Success.ai's $49 per month entry plan. Mailivery's Starter plan includes unlimited mailboxes with 200 shared warm-up emails per day, while Success.ai's Lite plan includes 2,000 monthly tokens and 5,000 emails per month across 10 accounts.
- Do I need both Mailivery and Success.ai?
- The article notes that many teams run one of each since the tools address different needs: Mailivery for building sender reputation and inbox placement, and Success.ai for sending campaigns and generating replies. Whether you need both depends on which part of the workflow, warmup or outreach, you are buying for.
- What integrations does each platform support?
- Mailivery connects with Gmail, GSuite, Microsoft 365, SMTP, and SendGrid. Success.ai connects with Zapier, HubSpot, Salesforce, Pipedrive, and Slack. The two platforms have no overlapping integrations listed in their respective ecosystems.
- How many pricing tiers does each platform offer?
- Mailivery offers three pricing tiers: Starter at $29 per month, Professional at $79 per month, and Business at $199 per month. Success.ai offers four tiers: Lite at $49 per month, Starter at $99 per month, Pro at $199 per month, and a custom-priced Enterprise plan.
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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