TL;DR
Airmail vs Spark: Both Airmail and Spark are excellent email. Airmail is better for users who prefer polished experiences, while Spark excels for those who value established ecosystems.
Which is better: Airmail or Spark?
Both Airmail and Spark are excellent email. Airmail is better for users who prefer polished experiences, while Spark excels for those who value established ecosystems.
Airmail vs Spark
Which is the better email for Mac in 2026?
We compared Airmail and Spark across 5 key factors including price, open-source status, and community adoption. Both Airmail and Spark are excellent email. Read our full breakdown below.
Airmail
Fast and powerful email client for Mac with customizable workflows and integrations.
Spark
Smart email client for Mac with team collaboration, email scheduling, and AI-powered features.
Our Verdict
Both Airmail and Spark are excellent email. Airmail is better for users who prefer polished experiences, while Spark excels for those who value established ecosystems.
Feature Comparison
| Feature | Airmail | Spark |
|---|---|---|
| Price | Paid | Paid |
| Open Source | No | No |
| Monthly Installs | N/A | N/A |
| GitHub Stars | N/A | N/A |
| Category | Communication | Communication |
Quick Install
brew install --cask airmailbrew install --cask sparkLearn More
In-Depth Overview
What is Airmail?
Airmail is a feature-rich email client for macOS and iOS developed by Bloop S.R.L., an Italian software company. First released in 2014, it quickly earned a reputation as one of the most customizable email clients available on Apple platforms. Airmail supports IMAP, POP3, Exchange, and virtually every major email provider including Gmail, Outlook, iCloud, Yahoo, and custom IMAP servers. What sets Airmail apart is its deep integration ecosystem—it connects with over 30 third-party services including Todoist, Things, OmniFocus, Trello, Asana, Evernote, Bear, and Fantastical. Users can create custom actions that chain multiple operations together, such as archiving an email while simultaneously creating a task in their preferred task manager. The app offers Markdown support for composition, unified inbox or separate account views, customizable swipe gestures, and per-account notification settings. Airmail adopted a subscription model in recent years, offering a free tier with basic functionality and a premium tier that unlocks all integrations and advanced features. While it lacks the team collaboration features of newer competitors, its flexibility and protocol support make it the email client of choice for technically-minded individuals who want their email workflow to integrate smoothly with their broader productivity stack.
What is Spark?
Spark is a modern email client developed by Readdle, a Ukrainian software company known for producing high-quality productivity apps like PDF Expert and Documents. Originally launched in 2015, Spark has evolved significantly through several major iterations. The current version, Spark Mail, represents a complete rewrite focused on team collaboration and AI-powered email management. Spark's signature feature is its Smart Inbox, which uses machine learning to automatically categorize incoming messages into Personal, Notifications, and Newsletters sections, surfacing important emails first. In 2026, Spark has doubled down on AI capabilities with Spark +AI, offering intelligent reply suggestions, email summarization for long threads, tone adjustment, and even full email composition from brief prompts. For teams, Spark provides shared inboxes, real-time collaborative email drafting, internal comments on emails visible only to team members, email delegation, and shared email templates. The app supports Gmail, iCloud, Outlook, Exchange, and standard IMAP accounts. Spark uses a freemium model with a generous free tier that includes Smart Inbox and basic features. The Premium tier adds AI features, priority support, and advanced team collaboration tools. Spark is available on macOS, iOS, Android, and Windows, making it one of the most cross-platform email clients available.
Detailed Feature Comparison
Smart Inbox & AI Sorting
CriticalAirmail offers basic VIP filtering and custom smart folders, but lacks built-in AI-powered email prioritization. Users must manually create rules to sort incoming mail.
Spark's Smart Inbox automatically categorizes emails into Personal, Notifications, and Newsletters using machine learning. It surfaces important messages first and suppresses noise without manual configuration.
Verdict: Spark's AI-driven Smart Inbox is a major improvement for managing email overload, offering intelligent prioritization that Airmail simply cannot match.
Team Collaboration
HighAirmail is designed primarily as a solo email client. It lacks shared inboxes, collaborative drafting, or team-specific features.
Spark offers shared inboxes, real-time collaborative email drafting, internal team comments on emails, email delegation, and shared templates—making it a full team communication tool.
Verdict: Spark is leagues ahead in team collaboration. Airmail does not compete in this space at all.
Third-Party Integrations
HighAirmail integrates with 30+ services including Todoist, Things, OmniFocus, Trello, Asana, Evernote, Bear, Fantastical, and more. Custom actions allow chaining multiple integrations together.
Spark integrates with popular services like Todoist, Trello, and Notion, but its integration library is smaller than Airmail's. It focuses more on built-in features rather than external connections.
Verdict: Airmail's extensive integration library and custom action chains give power users more flexibility to connect their email with their broader productivity ecosystem.
AI-Powered Composition
HighAirmail offers Markdown support and templates for composition but does not include AI-powered writing assistance or reply suggestions.
Spark +AI offers intelligent reply suggestions, email summarization, tone adjustment, and full email composition from brief prompts. It can draft entire professional responses in seconds.
Verdict: Spark's AI composition features represent the future of email, saving significant time on drafting responses and adjusting message tone.
Customization & Flexibility
MediumAirmail offers extensive customization including custom swipe gestures, per-account notification settings, custom actions, multiple layout options, and fine-grained message handling rules.
Spark provides a clean, opinionated design with moderate customization. Users can adjust swipe actions and notification settings, but the experience is more guided than configurable.
Verdict: Airmail provides significantly more customization options for users who want to tailor every aspect of their email workflow.
Cross-Platform Availability
MediumAirmail is available on macOS and iOS only. There is no Windows, Android, or web client available.
Spark is available on macOS, iOS, Android, and Windows with feature parity across platforms. This makes it ideal for mixed-device environments.
Verdict: Spark's cross-platform availability is a major advantage for users who work across Apple and non-Apple devices.
Privacy & Data Handling
HighAirmail processes email locally on device and does not route emails through its own servers for core functionality. It offers a more privacy-respecting approach.
Spark routes emails through Readdle's servers to enable push notifications and Smart Inbox features. While they have improved their privacy policy, some privacy-conscious users remain concerned.
Verdict: Airmail's local-first approach to email processing gives it an edge for privacy-conscious users who prefer their emails not to transit third-party servers.
Airmail vs Spark Feature Matrix
| Feature | Airmail | Spark | Winner |
|---|---|---|---|
| Smart Inbox & AI Sorting | Average | Excellent | Spark |
| Team Collaboration | Poor | Excellent | Spark |
| Third-Party Integrations | Excellent | Good | Airmail |
| AI-Powered Composition | Average | Excellent | Spark |
| Customization & Flexibility | Excellent | Good | Airmail |
| Cross-Platform Availability | Good | Excellent | Spark |
| Privacy & Data Handling | Good | Average | Airmail |
Who Should Choose Which?
1The Startup Team Lead
Managing team email communication requires shared inboxes, email delegation, and collaborative drafting. Spark's team features let the lead assign emails, draft responses collaboratively, and add internal notes—features Airmail simply does not offer.
2The Privacy-Conscious Freelancer
A freelancer handling sensitive client communications will prefer Airmail's local-first processing. Emails never touch third-party servers, and the extensive integrations with task managers and project tools keep everything organized without compromising privacy.
3The Overwhelmed Executive
With hundreds of emails daily, the executive needs AI to prioritize what matters. Spark's Smart Inbox automatically surfaces important messages and its AI can summarize long threads and draft quick replies, saving hours each week.
4The Budget-Conscious Student
Spark's free tier includes Smart Inbox and all basic features, making it the better free option. While Airmail's free tier is functional, Spark provides more value at zero cost with its intelligent email sorting.
5The Power User & Automation Enthusiast
Users who want to create complex email workflows with custom actions chaining together multiple integrations—like archiving an email, creating a task in OmniFocus, and logging it in a spreadsheet—will find Airmail's customization unmatched.
Migration Guide
Airmail → Spark
Migrating from Airmail to Spark is straightforward since both are IMAP-based clients. Simply add your email accounts to Spark using the same credentials. Your server-side folders, labels, and email history will sync automatically. You'll need to recreate any custom swipe actions in Spark's settings and set up new notification preferences. Note that Airmail's custom action chains don't have direct equivalents in Spark—you'll rely on Spark's built-in AI features instead.
Spark → Airmail
Moving from Spark to Airmail requires adding your email accounts via IMAP credentials. All server-side data syncs automatically. You'll lose Spark's Smart Inbox categorization and team features. To replicate some sorting, create smart folders and rules in Airmail. Set up third-party integrations through Airmail's action system to replace any workflow automations you had in Spark.
Pro Tips
Both clients are IMAP-based, so your emails remain on the server and switching is non-destructive. Test the new client alongside the old one before fully committing. Export any templates or signatures you've created as they don't transfer automatically.
Final Verdict
spark
Winner
Runner-up
Spark wins this comparison for most users in 2026 thanks to its AI-powered Smart Inbox, comprehensive team collaboration features, and cross-platform availability. The intelligent email prioritization alone saves significant time for anyone dealing with high email volume, and the AI composition assistant represents the direction email is heading. However, Airmail remains the superior choice for specific use cases: power users who need deep customization, privacy-conscious individuals who want local-only email processing, and budget-sensitive users who prefer Airmail's $9.99/year over Spark's $7.99/month premium tier. Neither app is bad—they simply serve different philosophies of email management.
Bottom Line: Choose Spark for AI-powered email management and team collaboration. Choose Airmail for maximum customization, privacy, and value pricing.
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Applications designed for collaborative work including shared inboxes, team messaging, and collaborative document editing.
Sources & References
Fact-CheckedLast verified: Feb 15, 2026
Key Verified Facts
- Spark supports macOS, iOS, Android, and Windows platforms.[cite-spark-official]
- Airmail integrates with over 30 third-party services.[cite-airmail-official]
- Spark +AI features include email summarization and intelligent reply suggestions.[cite-spark-ai]
- Airmail Pro subscription costs $9.99 per year.[cite-airmail-pricing]
- 1Spark Mail – Smart. Focused. Email.
Accessed Feb 15, 2026
- 2Airmail - Lightning Fast Mail Client
Accessed Feb 15, 2026
- 3Spark +AI Features
Accessed Feb 15, 2026
- 4Airmail Pricing & Plans
Accessed Feb 15, 2026
- 5Readdle - Productivity Apps
Accessed Feb 15, 2026
Research queries: Airmail vs Spark Mac email client 2026 comparison; Spark Mail AI features pricing 2026; Airmail integrations custom actions Mac