Lemwarm vs Mailarrow: Email Warmup Tool vs Cold Email Platform Comparison
Compare Lemwarm (email warmup tool) and Mailarrow (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Compare Lemwarm (email warmup tool) and Mailarrow (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Reviewed and updated September 2, 2026
Lemwarm vs Mailarrow: Email Warmup Tool vs Cold Email Platform Comparison
Sales teams building an outbound stack often weigh Lemwarm, an email warmup tool for email domain warming and deliverability, against Mailarrow, a cold email platform for cold email outreach. 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
Lemwarm is an email warmup tool for email domain warming and deliverability; Mailarrow is a cold email platform for cold email outreach. By each vendor's own wording, Lemwarm lists automated email warmup with human-like interactions and warm-up network of 20,000+ healthy domains, and Mailarrow lists unlimited email warmup and unlimited mailboxes.
Lemwarm offers a lower entry point at $29/mo compared to Mailarrow at $39/mo.
If your priority is building sender reputation and improving inbox placement, Lemwarm is the one built for it; for sending campaigns that land in the inbox and generate replies, that is Mailarrow. Many teams run one of each.
Understanding the Core Difference
Lemwarm is Email warmup tool from lemlist that builds sender reputation using a network of 20,000+ healthy domains, with industry-tailored warmup clusters and deliverability scoring.
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.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Essential Plan
Basic
Lemwarm Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Essential Plan | $29/mo | per email account | Warm-up network of 20k+ healthy domains |
| Smart Plan | $49/mo | per email account | Everything in Essential plan |
| Custom | Contact Sales | More than 10 users? | Everything in Smart plan |
Source: Lemwarm Pricing
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
Pricing Analysis
Lemwarm is more affordable at the entry level ($29/mo vs $39/mo). For teams with tight budgets or those just getting started with email domain warming and deliverability and cold email outreach, this price difference matters.
Features Breakdown
- Automated email warmup with human-like interactions
- Warm-up network of 20,000+ healthy domains
- Industry-tailored warmup clusters for natural patterns
- Deliverability score out of 100
- Technical setup checker (SPF, DKIM, DMARC)
- Personalized warmup using your real email templates (Smart plan)
- and 2 more listed below
- Unlimited Email Warmup
- Unlimited Mailboxes
- AI Personalization
- Sending mailbox rotation
- Detailed campaign analytics
- Bulk Prospects Import
- and 4 more listed below
Lemwarm Key Features
- Automated email warmup with human-like interactions
- Warm-up network of 20,000+ healthy domains
- Industry-tailored warmup clusters for natural patterns
- Deliverability score out of 100
- Technical setup checker (SPF, DKIM, DMARC)
- Personalized warmup using your real email templates (Smart plan)
- Custom deliverability alerts and recommendations
- Free with any lemlist subscription
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
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 Lemwarm
- Automated email warmup with human-like interactions
- Warm-up network of 20,000+ healthy domains
- Industry-tailored warmup clusters for natural patterns
- Deliverability score out of 100
- Technical setup checker (SPF, DKIM, DMARC)
- Personalized warmup using your real email templates (Smart plan)
- Custom deliverability alerts and recommendations
- Free with any lemlist subscription
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
Integration Ecosystem
Lemwarm Integrations
Lemwarm connects with: Gmail, Google Workspace, Outlook, Microsoft 365, SMTP, lemlist (native), HubSpot (via lemlist), Salesforce (via lemlist), Pipedrive (via lemlist).
Mailarrow Integrations
Mailarrow connects with: Gmail, Outlook, Zoho, Zapier, TrulyInbox.
Shared Integrations
Both tools integrate with: Gmail, Outlook.
Integrations listed only by Lemwarm: Google Workspace, Microsoft 365, SMTP, lemlist (native), HubSpot (via lemlist), Salesforce (via lemlist), Pipedrive (via lemlist).
Integrations listed only by Mailarrow: Zoho, Zapier, TrulyInbox.
Use Case Recommendations
Best Fit for Lemwarm
- Budget-conscious teams looking for an affordable email warmup tool
- Organizations with complex tech stacks needing broad integration support (9 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
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
Feature Comparison Summary
| Feature | Lemwarm | Mailarrow |
|---|---|---|
| Starting Price | $29/mo | $39/mo |
| Top Tier Price | Contact Sales | $99/mo |
| Total Features Listed | 8 | 10 |
| Integrations | 9 | 5 |
| Founded | 2018 | N/A |
Getting Started Checklist
- Define your email domain warming and deliverability and cold email outreach requirements and monthly budget
- Estimate your expected warmup email volume and 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
Lemwarm serves the email domain warming and deliverability side of an outbound stack and Mailarrow the cold email outreach side. Lemwarm offers a more accessible entry point at $29/mo, 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 Lemwarm and Mailarrow for current information.
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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