Growbots vs MailRush.io: Cold Email Platform Comparison
Compare Growbots and MailRush.io side by side. See pricing, features, and integrations to choose the right cold email platform for your needs.
Growbots is a cold email platform built around a 180 million plus prospect database, offering a free entry tier and paid plans at $29 and $39 per month. MailRush.io focuses on outreach from your own SMTP or IMAP mailboxes with unlimited senders and warmup, starting at $19 per month and scaling to $99 per month for higher volume.
Key takeaways
- Growbots offers a free Freemium entry tier while MailRush.io's Starter plan starts at $19 per month.
- MailRush.io's Pro plan costs $39 per month for up to 30,000 contacts, the same price point as Growbots' Pro Outreach plan.
- Growbots lists access to a database of over 180 million prospects, a feature MailRush.io does not list.
- MailRush.io lists unlimited senders and unlimited email warming as key features, terms not used by Growbots.
- Growbots integrates with 7 tools including Salesforce and HubSpot, while MailRush.io integrates with 4 tools including Webhooks.
Reviewed and updated September 2, 2026
Growbots vs MailRush.io: Cold Email Platform Comparison
Growbots and MailRush.io are both cold email platforms. Choosing between them depends on your team size, budget, and specific cold email outreach requirements. Here is what each vendor publishes about pricing, features, and integrations.
The Quick Answer
By each vendor's own wording, Growbots lists explore database of 180m+ prospects and email verification on import, while MailRush.io lists unlimited senders and unlimited email warming. A capability both offer can appear under different names, so read both feature lists below.
Growbots offers a lower entry point at $0/mo compared to MailRush.io at $19/mo.
If your priority is sending campaigns that land in the inbox and generate replies, both tools target it. The right choice depends on your budget, team size, and the specific capabilities you need most.
Understanding the Core Difference
Growbots is Cold email software that finds prospects in a 180M+ contact database, warms up sending inboxes and automates outbound email campaigns. Also sells a Concierge service in which its own team runs the outbound process.
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.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Freemium
Starter
Growbots Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Freemium | Free | Basic Filters; partial access to the 180M+ prospect database | 20 email accounts; 3 sequences; up to 20 per email daily |
| Starter Outreach | $29/mo | Credits (Per Propsect) From $0.13 | Unlimited email accounts; unlimited sequences; up to 100 per email daily |
| Pro Outreach | $39/mo | Credits (Per Propsect) From $0.13 | Unlimited email accounts; unlimited sequences; up to 500 per email daily |
Source: Growbots Pricing
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
Pricing Analysis
Growbots is more affordable at the entry level ($0/mo vs $19/mo). For teams with tight budgets or those just getting started with cold email outreach, this price difference matters.
Growbots includes a free tier, letting you test the platform before committing financially.
Features Breakdown
- Explore Database of 180M+ Prospects
- Email Verification on Import
- Gradual Automatic Warmup
- Custom Tracking Domain
- Spintax Formulas
- A/B Testing
- and 4 more listed below
- Unlimited senders
- Unlimited email warming
- Email validation
- API access & Webhooks
- Zapier integrations
- Spintax support
- and 5 more listed below
Growbots Key Features
- Explore Database of 180M+ Prospects
- Email Verification on Import
- Gradual Automatic Warmup
- Custom Tracking Domain
- Spintax Formulas
- A/B Testing
- Shared Inbox
- Out-Of-Office Rescheduling
- Warm Replies Detection
- Email Templates Generator
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
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 Growbots
- Explore Database of 180M+ Prospects
- Email Verification on Import
- Gradual Automatic Warmup
- Custom Tracking Domain
- Spintax Formulas
- A/B Testing
- Shared Inbox
- Out-Of-Office Rescheduling
- Warm Replies Detection
- Email Templates Generator
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
Integration Ecosystem
Growbots Integrations
Growbots connects with: Salesforce, HubSpot, Zapier, Gmail, Outlook, SMTP, IMAP.
MailRush.io Integrations
MailRush.io connects with: SMTP, IMAP, Zapier, Webhooks.
Shared Integrations
Both tools integrate with: Zapier, SMTP, IMAP.
Integrations listed only by Growbots: Salesforce, HubSpot, Gmail, Outlook.
Integrations listed only by MailRush.io: Webhooks.
Use Case Recommendations
Best Fit for Growbots
- Budget-conscious teams looking for an affordable cold email platform
- Organizations with complex tech stacks needing broad integration support (7 integrations)
- Teams that want to start free and scale up as needs grow
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
Feature Comparison Summary
| Feature | Growbots | MailRush.io |
|---|---|---|
| Starting Price | Free | $19/mo |
| Top Tier Price | $39/mo | $99/mo |
| Total Features Listed | 10 | 11 |
| Integrations | 7 | 4 |
| Founded | 2014 | N/A |
Getting Started Checklist
- Define your cold email outreach requirements and monthly budget
- Estimate your expected 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
Growbots and MailRush.io both serve the cold email outreach market. Growbots offers a more accessible entry point, while MailRush.io starts at $19/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 Growbots and MailRush.io for current information.
Frequently asked questions.
Frequently asked questions- How much does Growbots cost compared to MailRush.io?
- Growbots offers a free Freemium plan, then $29 per month for Starter Outreach and $39 per month for Pro Outreach. MailRush.io starts at $19 per month for Starter, $39 per month for Pro, and $99 per month for Scale. Growbots has the lower entry price at $0 per month.
- What is the main difference between Growbots and MailRush.io?
- Growbots is cold email software built around a 180 million plus contact database that finds prospects, warms up inboxes, and automates outbound campaigns, and it also sells a Concierge service. MailRush.io automates outreach and multi step follow ups from your own SMTP or IMAP mailboxes or MailRush provided sending accounts, with warmup and validation included in every plan.
- Which integrations does each platform support?
- Growbots connects with Salesforce, HubSpot, Zapier, Gmail, Outlook, SMTP, and IMAP, totaling 7 integrations. MailRush.io connects with SMTP, IMAP, Zapier, and Webhooks, totaling 4 integrations. Both platforms share Zapier, SMTP, and IMAP integrations.
- Does MailRush.io include email warmup in every plan?
- Yes, MailRush.io includes email warmup and email validation in every plan it offers. It also lists unlimited senders and unlimited email warming as key features, which Growbots does not list under those exact terms.
- Which platform is better for high-volume outbound campaigns?
- MailRush.io is recommended for sales teams running high-volume outbound email campaigns and for teams that need a wide feature set with 11 listed capabilities. Growbots is recommended for budget-conscious teams and organizations needing broad integration support across 7 tools.
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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