Comparing as AI Email & Inbox ManagementCopilot in Outlook vs Mailbutler
Compare features, pricing, pros & cons, and user ratings to decide which AI tool is best for your needs.

Copilot in Outlook

Mailbutler
Core Differences
Copilot in Outlook is an integrated feature within the Microsoft 365 suite, relying on the Microsoft Graph and AI models to provide contextual assistance. It's tightly coupled with Outlook's architecture. Mailbutler, conversely, is a third-party extension that integrates with existing email clients (Apple Mail, Gmail, Outlook). It uses APIs and its own infrastructure to provide features like email tracking and collaboration, operating independently of the core email client's architecture.
Verdict by Category
Best for Microsoft 365 Users
Its deep integration with the Microsoft ecosystem provides a seamless and contextual experience.
Best for Cross-Platform Compatibility
It supports multiple email clients, including Apple Mail and Gmail, providing flexibility for users on different platforms.
Best for Email Tracking and Collaboration
Its comprehensive email tracking and collaboration features make it ideal for teams and individuals who need to monitor email engagement and work together efficiently.
Editor's Take
Honest opinion from our review team
I found that Copilot in Outlook felt like a natural extension of my existing workflow within Outlook. The AI-powered drafting and summarization were genuinely helpful, especially when dealing with long email threads. However, the cost of the Microsoft 365 Copilot license is a significant barrier. Mailbutler, on the other hand, felt more like a bolt-on solution. While the features were useful, especially the email tracking, it took some time to adjust to the interface. The freemium model is a great way to test the waters before committing to a paid plan.
Detailed Comparison
Copilot in Outlook requires a Microsoft 365 Copilot add-on license, which can add significant cost, especially for smaller businesses. The value depends on how heavily you rely on Microsoft 365 and whether the AI features justify the additional expense. Mailbutler offers a freemium model, making it accessible for users with basic needs. The paid plans offer good value for teams needing email tracking, collaboration, and marketing features, with transparent per-user pricing. The 14-day free trial is a great way to assess its value.
Copilot in Outlook Pros & Cons
Pros
- Streamlines email communication
- Improves meeting efficiency
- Automates routine tasks
- Enhances writing quality and style
- Provides contextual information
Cons
- Requires a Microsoft 365 Copilot license for full functionality
- Functionality is limited without an add-on license
- May require a learning curve to effectively use all features
- Performance depends on the quality of prompts
- Integration is limited to the Microsoft ecosystem
Mailbutler Pros & Cons
Pros
- Enhances email productivity with tracking and automation
- Facilitates team collaboration within the inbox
- Offers AI-powered assistance for writing and improving emails
- Provides customizable email signatures for marketing
- Integrates seamlessly with popular email clients
Cons
- Requires a subscription for full feature access
- May have a learning curve for new users
- Reliance on third-party integrations for certain features
- Smart Assistant features require careful review for accuracy
- Limited customization options in the Starter plan
AI Verdict
Both Copilot in Outlook and Mailbutler aim to supercharge your email experience, but they approach it from different angles. Copilot in Outlook, deeply integrated within the Microsoft 365 ecosystem, focuses on AI-powered assistance for drafting, summarizing, and managing emails and meetings. It's a natural extension for users already heavily invested in Microsoft's suite, streamlining workflows within a familiar environment. Its key differentiator is its ability to leverage your organization's data and the web to provide contextual information directly within Outlook.
On the other hand, Mailbutler is a more versatile email extension that works across multiple platforms (Apple Mail, Gmail, and Outlook). It emphasizes email tracking, personalization, and collaboration, providing tools for understanding email engagement and improving team communication. While it also offers AI assistance for composing emails, its strength lies in its tracking and collaboration features.
Ultimately, the choice depends on your specific needs and ecosystem. If you're a Microsoft 365 user looking for AI-driven email and meeting management, Copilot in Outlook is the clear choice. If you need cross-platform compatibility, email tracking, and enhanced collaboration features, Mailbutler is the better option. Both tools aim to boost productivity, but their feature sets and target audiences differ significantly.
Frequently Asked Questions
QDoes Copilot in Outlook work with non-Microsoft email accounts?
No, Copilot in Outlook is designed to work specifically with Microsoft Exchange Online accounts within the Microsoft 365 ecosystem.
QCan Mailbutler track emails sent from all email clients?
Mailbutler can track emails sent from Apple Mail, Gmail, and Outlook when the Mailbutler extension is installed and active in those clients.
QIs a Microsoft 365 subscription enough to use Copilot in Outlook?
No, you need a separate Microsoft 365 Copilot add-on license in addition to your Microsoft 365 subscription to unlock the full functionality of Copilot in Outlook.
QWhat kind of AI assistance does Mailbutler offer?
Mailbutler offers AI Smart Assistant features for composing emails, improving grammar and style, and suggesting optimal sending times.
QDoes Mailbutler work on mobile devices?
Mailbutler's functionality is primarily focused on desktop email clients (Apple Mail, Gmail, and Outlook), and its mobile support may be limited.