MailRush.io vs Regie.ai: Cold Email Platform vs Sales Engagement Platform Comparison
Compare MailRush.io (cold email platform) and Regie.ai (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 built for inbox deliverability and multi-step email follow-ups, starting at $19/mo. Regie.ai is a sales engagement platform coordinating outreach across email, phone, and social with AI agents, starting free. Choose MailRush.io for cold email campaigns, Regie.ai for multi-channel sales engagement, or run both together.
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 and 1,000 emails per day.
- Regie.ai offers a free entry plan with 250 one-time credits, while its Pro plan costs $49/mo with 5,000 credits every month.
- MailRush.io includes unlimited senders and unlimited email warming on every plan, along with email validation.
- Regie.ai's platform, RegieGO, provides AI agents for sourcing, ranking, call prep, and follow-ups, plus channel orchestration across phone, email, and social.
- MailRush.io integrates with SMTP, IMAP, Zapier, and Webhooks, while Regie.ai integrates with Gmail, Microsoft Outlook, HubSpot, and LinkedIn.
Reviewed and updated September 2, 2026
MailRush.io vs Regie.ai: Cold Email Platform vs Sales Engagement Platform Comparison
MailRush.io is a cold email platform; Regie.ai 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; Regie.ai 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 Regie.ai lists ai agents for sourcing, ranking, call prep and follow-ups and relevant messaging trained on your voice and company pitch.
Regie.ai 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, MailRush.io is the one built for it; for coordinating outreach across email, phone, and social channels, that is Regie.ai. 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.
Regie.ai is Agentic sales workspace (RegieGO) with built-in enrichment, emailing, dialing and workflows, plus multi-channel outreach plays across email, phone and social run from a single chat interface.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Starter
Free
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
Regie.ai Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Free | Free | 250 credits to get started (one-time) |
| Pro | $49/mo | 5,000 credits every month |
| Enterprise | Contact Sales | Volume credits, priced to your team |
Source: Regie.ai Pricing
Pricing Analysis
Regie.ai offers the lower entry point ($0/mo vs $19/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Regie.ai includes a free tier, which is helpful for evaluating the platform without upfront cost.
Features Breakdown
- Unlimited senders
- Unlimited email warming
- Email validation
- API access & Webhooks
- Zapier integrations
- Spintax support
- and 5 more listed below
- AI Agents for sourcing, ranking, call prep and follow-ups
- Relevant Messaging trained on your voice and company pitch
- Channel Orchestration across phone, email and social
- Multi-channel outreach plays with an execution timeline
- Built-in enrichment, emailing, dialing and workflows
- Always-On Pipeline with why-now signal tracking
- 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
Regie.ai Key Features
- AI Agents for sourcing, ranking, call prep and follow-ups
- Relevant Messaging trained on your voice and company pitch
- Channel Orchestration across phone, email and social
- Multi-channel outreach plays with an execution timeline
- Built-in enrichment, emailing, dialing and workflows
- Always-On Pipeline with why-now signal tracking
- Website visitor identification
- Lead enrichment with a multi-provider waterfall
- Pre-built plays ready to run
- Sales-Ready AI with pre-baked prompts and automations
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 Regie.ai
- AI Agents for sourcing, ranking, call prep and follow-ups
- Relevant Messaging trained on your voice and company pitch
- Channel Orchestration across phone, email and social
- Multi-channel outreach plays with an execution timeline
- Built-in enrichment, emailing, dialing and workflows
- Always-On Pipeline with why-now signal tracking
- Website visitor identification
- Lead enrichment with a multi-provider waterfall
- Pre-built plays ready to run
- Sales-Ready AI with pre-baked prompts and automations
Integration Ecosystem
MailRush.io Integrations
MailRush.io connects with: SMTP, IMAP, Zapier, Webhooks.
Regie.ai Integrations
Regie.ai connects with: Gmail, Microsoft Outlook, HubSpot, LinkedIn.
Integrations listed only by MailRush.io: SMTP, IMAP, Zapier, Webhooks.
Integrations listed only by Regie.ai: Gmail, Microsoft Outlook, HubSpot, LinkedIn.
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 Regie.ai
- Budget-conscious teams looking for an affordable sales engagement platform
- 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 | MailRush.io | Regie.ai |
|---|---|---|
| Starting Price | $19/mo | Free |
| Top Tier Price | $99/mo | Contact Sales |
| Total Features Listed | 11 | 10 |
| Integrations | 4 | 4 |
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 Regie.ai the multi-channel sales outreach and engagement tracking side. Regie.ai 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 MailRush.io and Regie.ai for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between MailRush.io and Regie.ai?
- MailRush.io is a cold email platform focused on sending campaigns from your own SMTP/IMAP mailboxes or MailRush-provided accounts, with email warmup and validation included in every plan. Regie.ai is an agentic sales workspace, RegieGO, that coordinates multi-channel outreach across email, phone, and social from a single chat interface.
- Which platform is cheaper, MailRush.io or Regie.ai?
- Regie.ai has the lower entry point, offering a free plan with 250 one-time credits, compared to MailRush.io's Starter plan at $19/mo. Regie.ai's Pro plan costs $49/mo with 5,000 monthly credits, while MailRush.io's Pro plan is $39/mo and Scale is $99/mo.
- Can I use both MailRush.io and Regie.ai together?
- Yes, the article notes that many teams run one of each. MailRush.io handles cold email outreach and deliverability, while Regie.ai manages multi-channel sales engagement across email, phone, and social, so they can complement rather than replace each other.
- What integrations does MailRush.io support?
- MailRush.io connects with SMTP, IMAP, Zapier, and Webhooks. These integrations let it send from custom mailboxes and automate workflows, but its integration list is narrower than Regie.ai's, which connects with Gmail, Microsoft Outlook, HubSpot, and LinkedIn.
- Which tool is better for multi-channel sales outreach?
- Regie.ai is built for multi-channel sales outreach, offering channel orchestration across phone, email, and social along with AI agents for sourcing, ranking, call prep, and follow-ups. MailRush.io is focused specifically on cold email outreach rather than coordinating multiple 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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