Mailarrow vs Mailwarm: Cold Email Platform vs Email Warmup Tool Comparison
Compare Mailarrow (cold email platform) and Mailwarm (email warmup tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Mailarrow is a cold email platform priced from $39/mo, built for sending outreach campaigns with AI personalization and unlimited mailboxes. Mailwarm is an email warmup tool priced from $79/mo, built for building sender reputation through warmup networks and deliverability monitoring. Many teams use both together rather than choosing one over the other.
Key takeaways
- Mailarrow's entry plan costs $39/mo for 2,000 active prospects and 6,000 emails, while Mailwarm's entry plan costs $79/mo for 1 mailbox and up to 50 warmup emails per day.
- Mailarrow offers 3 pricing tiers (Basic, Professional, Growth) while Mailwarm offers 4 tiers (Starter, Growth, Scale, and a Tailored Plan with unlimited mailboxes and warmup emails).
- Mailarrow lists 10 features including unlimited email warmup, unlimited mailboxes, AI personalization, and reply tracking.
- Mailwarm lists 9 features including spam score monitoring, SPF, DKIM, and DMARC validation, and blacklist detection across major databases.
- Gmail and Outlook are the only integrations shared by both platforms, with Mailarrow also connecting to Zoho, Zapier, and TrulyInbox, and Mailwarm also connecting to Google Workspace, Microsoft 365, Yahoo, and Custom SMTP.
Reviewed and updated September 2, 2026
Mailarrow vs Mailwarm: Cold Email Platform vs Email Warmup Tool Comparison
Mailarrow is a cold email platform; Mailwarm is an email warmup tool. 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, email domain warming and deliverability on the other. This guide lays out what each vendor publishes.
The Quick Answer
Mailarrow is a cold email platform for cold email outreach; Mailwarm is an email warmup tool for email domain warming and deliverability. By each vendor's own wording, Mailarrow lists unlimited email warmup and unlimited mailboxes, and Mailwarm lists b2b & b2c warm up and spam score monitoring.
Mailarrow offers a lower entry point at $39/mo compared to Mailwarm at $79/mo.
If your priority is sending campaigns that land in the inbox and generate replies, Mailarrow is the one built for it; for building sender reputation and improving inbox placement, that is Mailwarm. 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.
Mailwarm is Email warmup and deliverability platform that generates engagement across a network of aged real inboxes and includes a deliverability expert on every plan. Each interaction produces several positive signals, such as marking as non-spam, opening, marking as important and replying.
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
Mailwarm Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $79/mo | 1 mailbox/SMTP to warm; 1 user | Up to 50 warmup emails/day |
| Growth | $189/mo | 3 mailboxes/SMTPs to warm; 2 users | Up to 200 warmup emails/day |
| Scale | $549/mo | 10 mailboxes/SMTPs to warm; 5 users | Up to 500 warmup emails/day |
| Tailored Plan | Contact Sales | unlimited mailboxes, users | unlimited warmup emails, and replies |
Source: Mailwarm Pricing
Pricing Analysis
Mailarrow is more affordable at the entry level ($39/mo vs $79/mo). For teams with tight budgets or those just getting started with cold email outreach and email domain warming and deliverability, this price difference matters.
Mailwarm offers 4 pricing tiers compared to Mailarrow's 3, giving you more granularity as you scale.
Features Breakdown
- Unlimited Email Warmup
- Unlimited Mailboxes
- AI Personalization
- Sending mailbox rotation
- Detailed campaign analytics
- Bulk Prospects Import
- and 4 more listed below
- B2B & B2C warm up
- Spam score monitoring
- Provider-Level warmup
- Warmup your email content
- Authentication fix tools
- No IMAP access required
- and 3 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
Mailwarm Key Features
- B2B & B2C warm up
- Spam score monitoring
- Provider-Level warmup
- Warmup your email content
- Authentication fix tools
- No IMAP access required
- Progressive volume ramp-up to avoid spam filters
- SPF, DKIM, and DMARC validation
- Blacklist detection across major databases
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 Mailwarm
- B2B & B2C warm up
- Spam score monitoring
- Provider-Level warmup
- Warmup your email content
- Authentication fix tools
- No IMAP access required
- Progressive volume ramp-up to avoid spam filters
- SPF, DKIM, and DMARC validation
- Blacklist detection across major databases
Integration Ecosystem
Mailarrow Integrations
Mailarrow connects with: Gmail, Outlook, Zoho, Zapier, TrulyInbox.
Mailwarm Integrations
Mailwarm connects with: Gmail, Google Workspace, Outlook, Microsoft 365, Yahoo, Custom SMTP.
Shared Integrations
Both tools integrate with: Gmail, Outlook.
Integrations listed only by Mailarrow: Zoho, Zapier, TrulyInbox.
Integrations listed only by Mailwarm: Google Workspace, Microsoft 365, Yahoo, Custom SMTP.
Use Case Recommendations
Best Fit for Mailarrow
- Budget-conscious teams looking for an affordable cold email platform
- Teams that need a wide feature set (10 capabilities listed)
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
Best Fit for Mailwarm
- Organizations with complex tech stacks needing broad integration support (6 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
- Teams launching new email domains for outreach
- Organizations recovering from deliverability issues
Feature Comparison Summary
| Feature | Mailarrow | Mailwarm |
|---|---|---|
| Starting Price | $39/mo | $79/mo |
| Top Tier Price | $99/mo | Contact Sales |
| Total Features Listed | 10 | 9 |
| Integrations | 5 | 6 |
Getting Started Checklist
- Define your cold email outreach and email domain warming and deliverability requirements and monthly budget
- Estimate your expected email sending volume and warmup email 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
Mailarrow serves the cold email outreach side of an outbound stack and Mailwarm the email domain warming and deliverability side. Mailarrow offers a more accessible entry point at $39/mo, while Mailwarm starts at $79/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 Mailwarm for current information.
Frequently asked questions.
Frequently asked questions- What is the difference between Mailarrow and Mailwarm?
- Mailarrow is a cold email platform for sending outreach campaigns, offering features like AI personalization, unlimited mailboxes, and reply tracking. Mailwarm is an email warmup tool focused on building sender reputation and deliverability, offering spam score monitoring, authentication fix tools, and blacklist detection. They address different parts of the outbound email workflow.
- Which is cheaper, Mailarrow or Mailwarm?
- Mailarrow is cheaper at the entry level, starting at $39/mo compared to Mailwarm's $79/mo starting price. Mailarrow's Basic plan includes 2,000 active prospects and 6,000 emails, while Mailwarm's Starter plan covers 1 mailbox and up to 50 warmup emails per day.
- Do I need both Mailarrow and Mailwarm?
- Many teams do use both, since they serve different needs. Mailarrow handles cold email outreach and campaign sending, while Mailwarm handles email domain warming and deliverability, so running both covers the full workflow from sender reputation to inbox placement to campaign performance.
- What integrations does Mailarrow support compared to Mailwarm?
- Mailarrow connects with Gmail, Outlook, Zoho, Zapier, and TrulyInbox. Mailwarm connects with Gmail, Google Workspace, Outlook, Microsoft 365, Yahoo, and Custom SMTP. The only integrations shared by both tools are Gmail and Outlook.
- Which tool has more pricing tiers, Mailarrow or Mailwarm?
- Mailwarm has more pricing tiers, offering 4 plans (Starter, Growth, Scale, and a Tailored Plan) compared to Mailarrow's 3 plans (Basic, Professional, and Growth). This gives Mailwarm buyers more granularity as they scale mailbox warmup needs.
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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