MailRush.io vs Zeekeo: Cold Email Platform vs Sales Engagement Platform Comparison
Compare MailRush.io (cold email platform) and Zeekeo (sales engagement platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
MailRush.io is a cold email platform starting at $19/mo, built for cold email outreach with unlimited senders and unlimited email warming. Zeekeo is a sales engagement platform starting at $149/mo, built for multi-channel outreach across email and LinkedIn with AI-powered messaging and sequences. Many teams use both together rather than choosing one over the other.
Key takeaways
- MailRush.io's Starter plan costs $19/mo and supports up to 1,000 contacts with up to 5,000 emails per month.
- Zeekeo's DIY plan costs $149/mo per seat, with volume discounts available for more seats.
- MailRush.io offers 3 pricing tiers (Starter, Pro, Scale) while Zeekeo offers 2 (DIY and Done-For-You).
- MailRush.io integrates with SMTP, IMAP, Zapier, and Webhooks, while Zeekeo integrates with HubSpot, Salesforce, Zapier, Google, and Microsoft.
- Zapier is the only integration shared by both MailRush.io and Zeekeo.
Reviewed and updated September 5, 2026
MailRush.io vs Zeekeo: Cold Email Platform vs Sales Engagement Platform Comparison
MailRush.io is a cold email platform; Zeekeo 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
MailRush.io is a cold email platform for cold email outreach; Zeekeo is a sales engagement platform for multi-channel sales outreach and engagement tracking. By each vendor's own wording, MailRush.io lists unlimited senders and unlimited email warming, and Zeekeo lists email + linkedin outreach and ai-powered messaging & sequences.
MailRush.io offers a lower entry point at $19/mo compared to Zeekeo at $149/mo.
If your priority is sending campaigns that land in the inbox and generate replies, MailRush.io is the one built for it; for coordinating outreach across email, phone, and social channels, that is Zeekeo. Many teams run one of each.
Understanding the Core Difference
MailRush.io is Cold email software that automates outreach and multi-step follow-ups from your own SMTP/IMAP mailboxes or MailRush-provided sending accounts. Email warmup and email validation are included in every plan.
Zeekeo is Outbound platform that runs email and LinkedIn campaigns from one system, with prospecting and data enrichment, AI-powered messaging and sequences, A/B testing and reply intelligence. Sold either as self-serve seats or as a managed service where Zeekeo builds and runs the outbound motion.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Starter
Zeekeo DIY
MailRush.io Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $19/mo | Up to 1,000 contacts | Up to 5,000 emails per month; up to 1,000 emails per day |
| Pro | $39/mo | Up to 30,000 contacts | Up to 10,000 emails per month; up to 1,500 emails per day |
| Scale | $99/mo | Up to 50,000 contacts | Up to 25,000 emails per month; up to 3,000 emails per day |
Source: MailRush.io Pricing
Zeekeo Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Zeekeo DIY | $149/mo | Per seat; volume discounts on more seats | Not published |
| Zeekeo Done-For-You | Contact Sales | Managed service | Not published |
Source: Zeekeo Pricing
Pricing Analysis
MailRush.io is more affordable at the entry level ($19/mo vs $149/mo). For teams with tight budgets or those just getting started with cold email outreach and multi-channel sales outreach and engagement tracking, this price difference matters.
MailRush.io offers 3 pricing tiers compared to Zeekeo's 2, giving you more granularity as you scale.
Features Breakdown
- Unlimited senders
- Unlimited email warming
- Email validation
- API access & Webhooks
- Zapier integrations
- Spintax support
- and 5 more listed below
- Email + LinkedIn outreach
- AI-powered messaging & sequences
- Smart campaign automation
- A/B testing & optimization
- Analytics & performance dashboards
- AI-generated responses & insights
- and 4 more listed below
MailRush.io Key Features
- Unlimited senders
- Unlimited email warming
- Email validation
- API access & Webhooks
- Zapier integrations
- Spintax support
- Email follow-ups
- Suppression list
- Email copy spam assessment
- Email personalization
- Unsubscription automation
Zeekeo Key Features
- Email + LinkedIn outreach
- AI-powered messaging & sequences
- Smart campaign automation
- A/B testing & optimization
- Analytics & performance dashboards
- AI-generated responses & insights
- LinkedIn post creation & scheduling
- Image & GIF personalization
- Workflow automation
- Targeted calling & appointment setting
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 MailRush.io
- Unlimited senders
- Unlimited email warming
- Email validation
- API access & Webhooks
- Zapier integrations
- Spintax support
- Email follow-ups
- Suppression list
- Email copy spam assessment
- Email personalization
- Unsubscription automation
Listed only by Zeekeo
- Email + LinkedIn outreach
- AI-powered messaging & sequences
- Smart campaign automation
- A/B testing & optimization
- Analytics & performance dashboards
- AI-generated responses & insights
- LinkedIn post creation & scheduling
- Image & GIF personalization
- Workflow automation
- Targeted calling & appointment setting
Integration Ecosystem
MailRush.io Integrations
MailRush.io connects with: SMTP, IMAP, Zapier, Webhooks.
Zeekeo Integrations
Zeekeo connects with: HubSpot, Salesforce, Zapier, Google, Microsoft.
Shared Integrations
Both tools integrate with: Zapier.
Integrations listed only by MailRush.io: SMTP, IMAP, Webhooks.
Integrations listed only by Zeekeo: HubSpot, Salesforce, Google, Microsoft.
Use Case Recommendations
Best Fit for MailRush.io
- Budget-conscious teams looking for an affordable cold email platform
- Teams that need a wide feature set (11 capabilities listed)
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
Best Fit for Zeekeo
- Mid-market to enterprise teams with established multi-channel sales outreach and engagement tracking budgets
- Organizations with complex tech stacks needing broad integration support (5 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | MailRush.io | Zeekeo |
|---|---|---|
| Starting Price | $19/mo | $149/mo |
| Top Tier Price | $99/mo | Contact Sales |
| Total Features Listed | 11 | 10 |
| Integrations | 4 | 5 |
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
MailRush.io serves the cold email outreach side of an outbound stack and Zeekeo the multi-channel sales outreach and engagement tracking side. MailRush.io offers a more accessible entry point at $19/mo, while Zeekeo starts at $149/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 MailRush.io and Zeekeo for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between MailRush.io and Zeekeo?
- MailRush.io is a cold email platform focused on email outreach, warmup, and validation, while Zeekeo is a sales engagement platform that runs multi-channel outreach across email and LinkedIn with AI-powered messaging and reply intelligence. The core difference is single-channel cold email versus multi-channel sales engagement.
- How much does MailRush.io cost compared to Zeekeo?
- MailRush.io starts at $19/mo for its Starter plan, while Zeekeo's DIY plan starts at $149/mo per seat with volume discounts on more seats. MailRush.io also offers three pricing tiers (Starter, Pro, Scale) compared to Zeekeo's two (DIY and Done-For-You).
- What integrations does MailRush.io support?
- MailRush.io connects with SMTP, IMAP, Zapier, and Webhooks. This differs from Zeekeo, which connects with HubSpot, Salesforce, Zapier, Google, and Microsoft. Zapier is the only integration the two platforms share.
- Does Zeekeo offer a managed service option?
- Yes, Zeekeo offers a Done-For-You plan sold as a managed service where Zeekeo builds and runs the outbound motion, priced through Contact Sales. This is in addition to its self-serve DIY plan priced at $149/mo per seat.
- Should I use MailRush.io and Zeekeo together?
- The article notes that many teams run one of each, since MailRush.io is built for cold email outreach that lands in the inbox and generates replies, while Zeekeo is built for coordinating outreach across email, phone, and social channels.
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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