Mailarrow vs Regie.ai: Cold Email Platform vs Sales Engagement Platform Comparison
Compare Mailarrow (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.
Mailarrow is a cold email platform built for cold email outreach, offering unlimited warmup and unlimited mailboxes starting at $39 per month. Regie.ai is a sales engagement platform for multi-channel outreach across email, phone, and social, with a free tier and a $49 per month Pro plan. Many teams use both together.
Key takeaways
- Mailarrow's Basic plan costs $39/mo for 2,000 active prospects and 6,000 emails.
- Regie.ai offers a free plan with 250 one-time credits, plus a $49/mo Pro plan with 5,000 credits every month.
- Mailarrow's Growth plan costs $99/mo and supports up to 50,000 active prospects and 150,000 emails.
- Both platforms integrate with Gmail, but Mailarrow also connects with Outlook, Zoho, Zapier, and TrulyInbox while Regie.ai connects with Microsoft Outlook, HubSpot, and LinkedIn.
- Regie.ai's RegieGO workspace runs built-in enrichment, emailing, dialing, and workflow automation from a single chat interface.
Reviewed and updated September 2, 2026
Mailarrow vs Regie.ai: Cold Email Platform vs Sales Engagement Platform Comparison
Sales teams building an outbound stack often weigh Mailarrow, a cold email platform for cold email outreach, against Regie.ai, a sales engagement platform for multi-channel sales outreach and engagement tracking. They cover different parts of the workflow, so this comparison covers what each one does, what each one costs, and where they overlap.
The Quick Answer
Mailarrow 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, Mailarrow lists unlimited email warmup and unlimited mailboxes, 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 Mailarrow at $39/mo.
If your priority is sending campaigns that land in the inbox and generate replies, Mailarrow 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
Mailarrow is Cold email outreach software with email warmup, AI personalization, unlimited sequences and unlimited connected mailboxes. Users bring their own mailboxes and prospect lists; Mailarrow does not sell leads or provide inboxes.
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
Basic
Free
Mailarrow Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Basic | $39/mo | 2,000 active prospects | 6,000 emails |
| Professional | $59/mo | 20,000 active prospects | 60,000 emails |
| Growth | $99/mo | 50,000 active prospects | 150,000 emails |
Source: Mailarrow 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 $39/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 Email Warmup
- Unlimited Mailboxes
- AI Personalization
- Sending mailbox rotation
- Detailed campaign analytics
- Bulk Prospects Import
- and 4 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
Mailarrow Key Features
- Unlimited Email Warmup
- Unlimited Mailboxes
- AI Personalization
- Sending mailbox rotation
- Detailed campaign analytics
- Bulk Prospects Import
- Custom properties
- Sending schedules
- Advanced tracking
- Reply tracking
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 Mailarrow
- Unlimited Email Warmup
- Unlimited Mailboxes
- AI Personalization
- Sending mailbox rotation
- Detailed campaign analytics
- Bulk Prospects Import
- Custom properties
- Sending schedules
- Advanced tracking
- Reply tracking
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
Mailarrow Integrations
Mailarrow connects with: Gmail, Outlook, Zoho, Zapier, TrulyInbox.
Regie.ai Integrations
Regie.ai connects with: Gmail, Microsoft Outlook, HubSpot, LinkedIn.
Shared Integrations
Both tools integrate with: Gmail.
Integrations listed only by Mailarrow: Outlook, Zoho, Zapier, TrulyInbox.
Integrations listed only by Regie.ai: Microsoft Outlook, HubSpot, LinkedIn.
Use Case Recommendations
Best Fit for Mailarrow
- Budget-conscious teams looking for an affordable cold email platform
- Organizations with complex tech stacks needing broad integration support (5 integrations)
- 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 | Mailarrow | Regie.ai |
|---|---|---|
| Starting Price | $39/mo | Free |
| Top Tier Price | $99/mo | Contact Sales |
| Total Features Listed | 10 | 10 |
| Integrations | 5 | 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
Mailarrow 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 Mailarrow starts at $39/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 Mailarrow and Regie.ai for current information.
Frequently asked questions.
Frequently asked questions- What's the main difference between Mailarrow and Regie.ai?
- Mailarrow is a cold email platform for cold email outreach, warmup, and mailbox management, while Regie.ai is a sales engagement platform for multi-channel outreach across email, phone, and social. They address different parts of the outbound workflow, so many teams use both.
- Which platform is cheaper to start with?
- Regie.ai has a lower entry point with a free plan, compared to Mailarrow's $39/mo Basic plan. Regie.ai's paid Pro plan costs $49/mo with 5,000 credits every month, while Mailarrow's Basic plan includes 2,000 active prospects and 6,000 emails.
- Does Mailarrow provide leads or mailboxes?
- No, Mailarrow does not sell leads or provide inboxes. Users bring their own mailboxes and prospect lists, and Mailarrow adds unlimited email warmup, AI personalization, and unlimited connected mailboxes on top of that.
- What integrations do Mailarrow and Regie.ai share?
- Both platforms integrate with Gmail. Beyond that shared connection, Mailarrow also connects with Outlook, Zoho, Zapier, and TrulyInbox, while Regie.ai connects with Microsoft Outlook, HubSpot, and LinkedIn.
- Should I use both Mailarrow and Regie.ai together?
- Many teams do run both, since they cover different needs. Mailarrow is built for cold email campaigns that land in the inbox and generate replies, while Regie.ai coordinates outreach across email, phone, and social channels from a single chat interface.
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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