MailRush.io vs Reply.io: Cold Email Platform Comparison
Compare MailRush.io and Reply.io side by side. See pricing, features, and integrations to choose the right cold email platform for your needs.
MailRush.io costs $19 per month at entry level versus Reply.io's $59 per month, with MailRush.io offering three pricing tiers focused on affordable cold email outreach with built-in warmup and validation, while Reply.io provides four tiers, a 1 billion contact database, AI SDR capabilities, and broader CRM integrations for complex sales tech stacks.
Key takeaways
- MailRush.io's entry plan is $19/mo while Reply.io's entry plan is $59/mo.
- MailRush.io offers 3 pricing tiers (Starter, Pro, Scale) while Reply.io offers 4 tiers (Email Volume, Multichannel, Agency Core, AI SDR Starter).
- MailRush.io lists 11 features including unlimited senders and unlimited email warming, while Reply.io lists 9 features including a 1 billion B2B contacts database.
- Reply.io integrates with 9 platforms including HubSpot, Salesforce, and Pipedrive, while MailRush.io integrates with SMTP, IMAP, Zapier, and Webhooks.
- Reply.io offers a 14-day free trial, a feature not listed by MailRush.io.
Reviewed and updated September 2, 2026
MailRush.io vs Reply.io: Cold Email Platform Comparison
MailRush.io and Reply.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, MailRush.io lists unlimited senders and unlimited email warming, while Reply.io lists unlimited email warmup and 1 billion b2b contacts database. A capability both offer can appear under different names, so read both feature lists below.
MailRush.io offers a lower entry point at $19/mo compared to Reply.io at $59/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
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.
Reply.io is AI-powered sales engagement platform with 1B+ B2B contacts, multichannel sequences, and AI SDR capabilities.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Starter
Email Volume
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
Reply.io Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Email Volume | $59/mo | 1,000 active contacts | Unlimited |
| Multichannel | $99/mo | Unlimited active contacts | Unlimited emails; 10 mailboxes |
| Agency Core | $210/mo | Unlimited clients & users | Unlimited mailboxes |
| AI SDR Starter | $800/mo | 1,000 active contacts | Unlimited mailboxes & warm-ups |
Source: Reply.io Pricing
Pricing Analysis
MailRush.io is more affordable at the entry level ($19/mo vs $59/mo). For teams with tight budgets or those just getting started with cold email outreach, this price difference matters.
Reply.io offers 4 pricing tiers compared to MailRush.io's 3, 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
- Unlimited email warmup
- 1 billion B2B contacts database
- Anti-spam & deliverability suite
- LinkedIn automation (add-on)
- SMS and calls (add-on)
- AI personalization
- and 3 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
Reply.io Key Features
- Unlimited email warmup
- 1 billion B2B contacts database
- Anti-spam & deliverability suite
- LinkedIn automation (add-on)
- SMS and calls (add-on)
- AI personalization
- AI SDR capabilities
- Multi-workspace for agencies
- 14-day free trial
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 Reply.io
- Unlimited email warmup
- 1 billion B2B contacts database
- Anti-spam & deliverability suite
- LinkedIn automation (add-on)
- SMS and calls (add-on)
- AI personalization
- AI SDR capabilities
- Multi-workspace for agencies
- 14-day free trial
Integration Ecosystem
MailRush.io Integrations
MailRush.io connects with: SMTP, IMAP, Zapier, Webhooks.
Reply.io Integrations
Reply.io connects with: HubSpot, Salesforce, Pipedrive, Copper CRM, Zendesk Sell, Close, Zapier, Make, n8n.
Shared Integrations
Both tools integrate with: Zapier.
Integrations listed only by MailRush.io: SMTP, IMAP, Webhooks.
Integrations listed only by Reply.io: HubSpot, Salesforce, Pipedrive, Copper CRM, Zendesk Sell, Close, Make, n8n.
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 Reply.io
- Organizations with complex tech stacks needing broad integration support (9 integrations)
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
- SDR teams focused on pipeline generation
Feature Comparison Summary
| Feature | MailRush.io | Reply.io |
|---|---|---|
| Starting Price | $19/mo | $59/mo |
| Top Tier Price | $99/mo | $800/mo |
| Total Features Listed | 11 | 9 |
| Integrations | 4 | 9 |
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
MailRush.io and Reply.io both serve the cold email outreach market. MailRush.io offers a more accessible entry point at $19/mo, while Reply.io starts at $59/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 Reply.io for current information.
Frequently asked questions.
Frequently asked questions- What is the price difference between MailRush.io and Reply.io?
- MailRush.io's entry-level Starter plan costs $19 per month, while Reply.io's entry-level Email Volume plan costs $59 per month. MailRush.io's Pro plan is $39/mo and Scale is $99/mo, while Reply.io's Multichannel plan is $99/mo, Agency Core is $210/mo, and AI SDR Starter is $800/mo.
- Which platform has more pricing tiers?
- Reply.io offers 4 pricing tiers: Email Volume, Multichannel, Agency Core, and AI SDR Starter, compared to MailRush.io's 3 tiers: Starter, Pro, and Scale. More tiers give Reply.io users greater granularity as their needs scale.
- Does MailRush.io include email warmup and validation in its plans?
- Yes, MailRush.io includes unlimited email warming and email validation in every plan. Reply.io also lists unlimited email warmup as a feature, though the two vendors describe this capability with slightly different wording.
- What integrations does each platform support?
- MailRush.io connects with SMTP, IMAP, Zapier, and Webhooks. Reply.io connects with a broader set including HubSpot, Salesforce, Pipedrive, Copper CRM, Zendesk Sell, Close, Zapier, Make, and n8n. Zapier is the only integration shared by both platforms.
- Which platform is better for agencies?
- Both platforms are recommended for agencies managing multiple client outreach programs. Reply.io additionally offers an Agency Core plan priced at $210/mo with unlimited clients and users, along with a multi-workspace feature designed specifically for agencies.
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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