Closely vs Mailarrow: Sales Engagement Platform vs Cold Email Platform Comparison
Compare Closely (sales engagement platform) and Mailarrow (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Closely is a sales engagement platform for multichannel outreach across LinkedIn and email, starting at $49/mo. Mailarrow is a cold email platform focused on deliverability and warmup, starting at $39/mo. Teams coordinating outreach across channels should pick Closely, teams focused purely on cold email should pick Mailarrow, and many run both.
Key takeaways
- Closely's Starter plan costs $49/mo and includes 1 LinkedIn account with unlimited email accounts.
- Mailarrow's Basic plan costs $39/mo and includes 2,000 active prospects and 6,000 emails.
- Closely offers four pricing tiers, while Mailarrow offers three.
- Closely integrates with Salesforce, Pipedrive, HubSpot, and GoHighLevel, while Mailarrow integrates with Zoho and Zapier.
- Gmail is the only integration listed by both Closely and Mailarrow on their own integration pages.
Reviewed and updated September 5, 2026
Closely vs Mailarrow: Sales Engagement Platform vs Cold Email Platform Comparison
Sales teams building an outbound stack often weigh Closely, a sales engagement platform for multi-channel sales outreach and engagement tracking, 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
Closely is a sales engagement platform for multi-channel sales outreach and engagement tracking; Mailarrow is a cold email platform for cold email outreach. By each vendor's own wording, Closely lists multichannel campaigns across linkedin and email and conditional sequence builder, and Mailarrow lists unlimited email warmup and unlimited mailboxes.
Mailarrow offers a lower entry point at $39/mo compared to Closely at $49/mo.
If your priority is coordinating outreach across email, phone, and social channels, Closely 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
Closely is Outbound platform that runs automated campaigns across LinkedIn and email from a shared sender, with a conditional sequence builder, unified inbox, contact enrichment and AI personalization agents.
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
Starter
Basic
Closely Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Starter | $49/mo | 1 LinkedIn account, unlimited email accounts |
| Growth | $127/mo | 3 LinkedIn accounts, unlimited email accounts, 3,000 bonus credits/mo |
| Essential | $205/mo | 5 LinkedIn accounts, unlimited email accounts, 5,000 bonus credits/mo |
| Custom | Contact Sales | Unlimited seats, custom LinkedIn accounts and credits |
Source: Closely 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
Mailarrow offers the lower entry point ($39/mo vs $49/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Closely offers 4 pricing tiers compared to Mailarrow's 3, giving you more granularity as you scale.
Features Breakdown
- Multichannel campaigns across LinkedIn and email
- Conditional sequence builder
- Smart Inbox unifying LinkedIn and email replies
- LinkedIn account warmup
- Dedicated residential IP for each LinkedIn account
- OAuth Gmail and Outlook connection plus custom SMTP
- and 4 more listed below
- Unlimited Email Warmup
- Unlimited Mailboxes
- AI Personalization
- Sending mailbox rotation
- Detailed campaign analytics
- Bulk Prospects Import
- and 4 more listed below
Closely Key Features
- Multichannel campaigns across LinkedIn and email
- Conditional sequence builder
- Smart Inbox unifying LinkedIn and email replies
- LinkedIn account warmup
- Dedicated residential IP for each LinkedIn account
- OAuth Gmail and Outlook connection plus custom SMTP
- Email finder with a multi-step fallback process
- Phone number finder
- AI lead scoring and personalization agents
- Export from Sales Navigator, LinkedIn posts and events
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 Closely
- Multichannel campaigns across LinkedIn and email
- Conditional sequence builder
- Smart Inbox unifying LinkedIn and email replies
- LinkedIn account warmup
- Dedicated residential IP for each LinkedIn account
- OAuth Gmail and Outlook connection plus custom SMTP
- Email finder with a multi-step fallback process
- Phone number finder
- AI lead scoring and personalization agents
- Export from Sales Navigator, LinkedIn posts and events
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
Closely Integrations
Closely connects with: Salesforce, Pipedrive, HubSpot, GoHighLevel, Gmail, Microsoft Outlook, SMTP, Webhooks.
Mailarrow Integrations
Mailarrow connects with: Gmail, Outlook, Zoho, Zapier, TrulyInbox.
Shared Integrations
Both tools integrate with: Gmail.
Integrations listed only by Closely: Salesforce, Pipedrive, HubSpot, GoHighLevel, Microsoft Outlook, SMTP, Webhooks.
Integrations listed only by Mailarrow: Outlook, Zoho, Zapier, TrulyInbox.
Use Case Recommendations
Best Fit for Closely
- Budget-conscious teams looking for an affordable sales engagement platform
- Organizations with complex tech stacks needing broad integration support (8 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
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
Feature Comparison Summary
| Feature | Closely | Mailarrow |
|---|---|---|
| Starting Price | $49/mo | $39/mo |
| Top Tier Price | Contact Sales | $99/mo |
| Total Features Listed | 10 | 10 |
| Integrations | 8 | 5 |
Getting Started Checklist
- Define your multi-channel sales outreach and engagement tracking and cold email outreach requirements and monthly budget
- Estimate your expected sequences and engagement actions 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
Closely serves the multi-channel sales outreach and engagement tracking side of an outbound stack and Mailarrow the cold email outreach side. Mailarrow offers a more accessible entry point at $39/mo, while Closely starts at $49/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 Closely and Mailarrow for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Closely and Mailarrow?
- Closely is a sales engagement platform built for multichannel outreach across LinkedIn and email, while Mailarrow is a cold email platform focused specifically on cold email outreach with warmup and unlimited mailboxes. Closely coordinates outreach across channels, and Mailarrow specializes in getting cold email campaigns into the inbox.
- Which platform costs less to start?
- Mailarrow costs less to start, at $39/mo for its Basic plan, compared to Closely's Starter plan at $49/mo. Mailarrow's Basic plan includes 2,000 active prospects and 6,000 emails, while Closely's Starter plan includes 1 LinkedIn account and unlimited email accounts.
- Can Closely and Mailarrow be used together?
- Yes, many teams run both tools together since they cover different parts of the outbound workflow. Closely handles multichannel coordination across LinkedIn, phone, and social channels, while Mailarrow handles cold email deliverability and sending.
- What integrations does each platform support?
- Closely integrates with Salesforce, Pipedrive, HubSpot, GoHighLevel, Gmail, Microsoft Outlook, SMTP, and Webhooks. Mailarrow integrates with Gmail, Outlook, Zoho, Zapier, and TrulyInbox. Based on each vendor's own listed integrations, Gmail is the only one shared between them.
- Which tool is better for LinkedIn outreach?
- Closely is built for LinkedIn outreach, offering multichannel campaigns across LinkedIn and email, LinkedIn account warmup, and a dedicated residential IP for each LinkedIn account. Mailarrow does not list LinkedIn features and instead focuses on cold email through unlimited mailboxes and email warmup.
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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