Mailarrow vs Overloop AI: Cold Email Platform vs Sales Engagement Platform Comparison
Compare Mailarrow (cold email platform) and Overloop 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 starting at $39/mo with unlimited email warmup and unlimited mailboxes, while Overloop AI is a sales engagement platform starting at $69/mo with a 450M+ prospect database and multichannel campaigns. Choose Mailarrow for cold email outreach, Overloop AI for multi-channel sales outreach and engagement tracking. Many teams use both.
Key takeaways
- Mailarrow's entry plan is $39/mo for 2,000 active prospects and 6,000 emails, while Overloop AI's entry plan is $69/mo for 250 credits per user per month.
- Mailarrow lists unlimited email warmup and unlimited mailboxes as key features, while Overloop AI lists a 450M+ prospects database and AI-powered campaigns.
- Mailarrow integrates with Gmail, Outlook, Zoho, Zapier, and TrulyInbox, while Overloop AI integrates with HubSpot, Salesforce, Pipedrive, Zapier, Slack, Calendly, Gmail, and Outlook.
- Both platforms share integrations with Gmail, Outlook, and Zapier.
- Overloop AI's Enterprise plan offers 1,000 credits per month per user with unlimited email accounts and unlimited campaigns.
Reviewed and updated September 2, 2026
Mailarrow vs Overloop AI: Cold Email Platform vs Sales Engagement Platform Comparison
Mailarrow is a cold email platform; Overloop 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
Mailarrow is a cold email platform for cold email outreach; Overloop 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 Overloop AI lists ai-powered campaigns and 450m+ prospects database.
Mailarrow offers a lower entry point at $39/mo compared to Overloop AI at $69/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 Overloop 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.
Overloop AI is Sales prospecting platform that finds verified B2B contacts and runs personalized email and social outreach campaigns. Includes a 450M+ B2B contact database, an email finder and verifier, and AI-written campaigns and follow-ups.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Basic
Starter
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
Overloop AI Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $69/mo | 250 credits per month per user | 1 email account per user; 3 campaigns |
| Growth | $99/mo | 500 credits per month per user | 3 email accounts per user; 10 campaigns |
| Enterprise | Contact Sales | 1,000 credits per month per user | Unlimited email accounts; Unlimited campaigns |
Source: Overloop AI Pricing
Pricing Analysis
Mailarrow is more affordable at the entry level ($39/mo vs $69/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.
Features Breakdown
- Unlimited Email Warmup
- Unlimited Mailboxes
- AI Personalization
- Sending mailbox rotation
- Detailed campaign analytics
- Bulk Prospects Import
- and 4 more listed below
- AI-powered campaigns
- 450M+ prospects database
- Verified Email Addresses
- Smart multichannel campaigns (Email + social)
- AI-powered Outreach Followups
- Email Finder & Verifier
- 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
Overloop AI Key Features
- AI-powered campaigns
- 450M+ prospects database
- Verified Email Addresses
- Smart multichannel campaigns (Email + social)
- AI-powered Outreach Followups
- Email Finder & Verifier
- Chrome Extension for LinkedIn
- Conversations Inbox
- Email Warmup
- REST API
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 Overloop AI
- AI-powered campaigns
- 450M+ prospects database
- Verified Email Addresses
- Smart multichannel campaigns (Email + social)
- AI-powered Outreach Followups
- Email Finder & Verifier
- Chrome Extension for LinkedIn
- Conversations Inbox
- Email Warmup
- REST API
Integration Ecosystem
Mailarrow Integrations
Mailarrow connects with: Gmail, Outlook, Zoho, Zapier, TrulyInbox.
Overloop AI Integrations
Overloop AI connects with: HubSpot, Salesforce, Pipedrive, Zapier, Slack, Calendly, Gmail, Outlook.
Shared Integrations
Both tools integrate with: Gmail, Outlook, Zapier.
Integrations listed only by Mailarrow: Zoho, TrulyInbox.
Integrations listed only by Overloop AI: HubSpot, Salesforce, Pipedrive, Slack, Calendly.
Use Case Recommendations
Best Fit for Mailarrow
- Budget-conscious teams looking for an affordable cold email platform
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
- SDR teams focused on pipeline generation
Best Fit for Overloop AI
- Organizations with complex tech stacks needing broad integration support (8 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
- SDR teams running multi-channel outreach sequences
- Sales managers tracking team engagement metrics
Feature Comparison Summary
| Feature | Mailarrow | Overloop AI |
|---|---|---|
| Starting Price | $39/mo | $69/mo |
| Top Tier Price | $99/mo | Contact Sales |
| Total Features Listed | 10 | 10 |
| Integrations | 5 | 8 |
| Founded | N/A | 2015 |
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 Overloop AI the multi-channel sales outreach and engagement tracking side. Mailarrow offers a more accessible entry point at $39/mo, while Overloop AI starts at $69/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 Overloop AI for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Mailarrow and Overloop AI?
- Mailarrow is a cold email platform focused on email warmup, AI personalization, and unlimited sequences using your own mailboxes and lists. Overloop AI is a sales engagement platform that provides a 450M+ B2B contact database, an email finder and verifier, and multichannel campaigns across email and social.
- Which platform is cheaper, Mailarrow or Overloop AI?
- Mailarrow is cheaper at the entry level, starting at $39/mo compared to Overloop AI's $69/mo starter plan. Mailarrow's Basic plan includes 2,000 active prospects and 6,000 emails, while Overloop AI's Starter plan includes 250 credits per user per month and 1 email account per user.
- Does Mailarrow provide leads or a contact database?
- No, Mailarrow does not sell leads or provide a contact database. Users bring their own mailboxes and prospect lists. This contrasts with Overloop AI, which includes a 450M+ B2B contact database along with an email finder and verifier.
- Can Mailarrow and Overloop AI be used together?
- Yes, many teams run both platforms since they serve different parts of the outreach workflow. Mailarrow handles cold email sending, warmup, and deliverability, while Overloop AI manages multi-channel sales engagement including email, social, and contact sourcing.
- What integrations does each platform support?
- Mailarrow integrates with Gmail, Outlook, Zoho, Zapier, and TrulyInbox. Overloop AI integrates with HubSpot, Salesforce, Pipedrive, Zapier, Slack, Calendly, Gmail, and Outlook. Both tools share Gmail, Outlook, and Zapier integrations.
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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