
Mailspring - Detailed Review
Productivity Tools

Mailspring - Product Overview
Mailspring Overview
Mailspring is an open-source email client that stands out in the productivity tools category, particularly for its versatility and feature-rich interface.Primary Function
Mailspring’s primary function is to manage multiple email accounts in a single, streamlined inbox. It supports major mail providers such as Gmail, iCloud, Office 365, Outlook.com, Yahoo!, and IMAP/SMTP, making it a comprehensive solution for both personal and professional email management.Target Audience
Mailspring is suited for a diverse range of users, including:- Casual, budget-conscious users who need basic email features.
- Professional users who can benefit from the advanced tools available in the Pro version.
- Marketing and communications professionals who can utilize features like activity tracking, such as viewing open rates and link clicks.
Key Features
Cross-Platform Compatibility
Mailspring is available on Windows, Mac, and Linux, ensuring it can be used across different operating systems.Advanced Search and Organization
It indexes your mail, allowing you to use advanced search queries similar to those in Gmail, ensuring you never lose an email again. The app also supports event invitations and allows you to RSVP directly from your inbox.Activity Tracking
Mailspring includes features like open tracking and link click tracking, providing insights into how your contacts engage with your emails. This is particularly useful for sales and business communications.Contact Enrichment
The app enriches contact profiles with bios, links to social profiles, previous conversations, and even company information such as office time zones and headcount.Customization and Translation
Mailspring offers a beautiful signature editor, supports multiple layouts and themes, and can translate messages in several languages, including Spanish, Russian, simplified Chinese, French, and German. It also auto-detects the language you’re using and spell checks accordingly.Pro Version Features
The Pro version of Mailspring removes limits on features like snoozing messages, scheduling reminders, and sending emails later. It also includes quick reply templates and an Activity tab to track email activity and optimize messaging. Overall, Mailspring is a versatile and feature-rich email client that caters to various user needs, from basic email management to advanced professional and marketing tools.
Mailspring - User Interface and Experience
Mailspring Overview
Mailspring, an open-source email client, offers a user interface that is designed to be functional and streamlined, particularly for those looking to manage multiple email accounts efficiently.Interface and Customization
The interface of Mailspring is clean and well-organized, allowing users to manage their emails from a unified inbox that supports multiple accounts, including Gmail, iCloud, Office 365, and more. However, some users have noted that the interface can be cluttered with buttons and icons that they may not use. Currently, there is no straightforward way to hide these elements without creating a custom theme or modifying the existing one using CSS.Ease of Use
Mailspring is generally praised for its ease of use. The application is easy to set up, and its interface is intuitive, making it simple for users to access and manage their emails. Features like unified inbox, notifications, and email tracking are well-integrated and easy to use.Customizable Themes and Layouts
Mailspring allows users to customize the appearance of the application using various themes and layouts. The user interface is styled using CSS, which makes it easy for users and developers to modify and extend the themes. This flexibility helps users match the application to their desktop or personal preferences.Productivity Features
The application includes several productivity-enhancing features such as snooze, send later, mail rules, and templates. Mailspring Pro, the paid version, adds additional features like link tracking, read receipts, mailbox analytics, and contact and company profiles. These features are designed to help users manage their emails more effectively and gain insights into their email interactions.User Experience
The overall user experience with Mailspring is generally positive, with many users appreciating its simplicity and functionality. However, some users have reported issues with syncing and delays in sending emails, which can impact the user experience negatively.Localization and Accessibility
Mailspring supports localization in multiple languages and includes features like right-to-left layout for languages such as Hebrew and Arabic. This makes the application accessible to a broader user base.Conclusion
In summary, Mailspring offers a user-friendly interface with a range of features that enhance email management. While it has some limitations in terms of customization and occasional syncing issues, it remains a popular choice for those seeking a multi-platform email client with advanced productivity features.
Mailspring - Key Features and Functionality
Mailspring Overview
Mailspring is a versatile and feature-rich email client that offers a range of tools to boost productivity and streamline email management. Here are the main features and how they work:Unified Inbox
Mailspring allows you to manage all your email accounts from a single inbox, supporting major mail providers like Gmail, iCloud, Office 365, Outlook.com, Yahoo!, and IMAP/SMTP. This unified view helps you get more done in less time by keeping all your messages in one place.Advanced Search
Mailspring features advanced search capabilities, similar to those in Gmail, which enable you to search message contents across all connected accounts. This ensures you never lose an email again and can quickly find the information you need.Snooze Emails and Send Later
You can snooze emails to temporarily remove them from your inbox and have them reappear at a later time. The “Send Later” feature allows you to schedule emails to be sent at a specific time, which is particularly useful for timing your communications effectively.Read Receipts and Link Tracking
Available in the Mailspring Pro version, read receipts notify you when your emails are opened, and link tracking informs you when your links are clicked. These features provide valuable insights into how your emails are engaging your recipients.Contact Profiles
Mailspring enriches your contact profiles with bios, links to social profiles, previous conversations, and more. It also retrieves company information such as office time zones, headcount, and fundraising status, helping you connect better with your contacts.Quick Reply Templates
You can create a library of customizable quick reply templates for common emails. This feature saves time by allowing you to reuse effective outreach emails with minimal edits.Email Templates and Signature Support
Mailspring offers a beautiful signature editor where you can create custom signatures with images and links to social media profiles. Additionally, it provides email templates that can be customized using merge tags, reducing the effort needed to draft emails.Translation and Spell Check
Mailspring can translate emails written in English into several other languages, including Spanish, Russian, simplified Chinese, French, and German. It also auto-detects the language you’re using and performs spell checks accordingly, ensuring your emails are error-free and professionally written.Event Integration
When you receive event invitations via email, Mailspring displays the event information and allows you to RSVP directly from your inbox, making it easier to manage your calendar.Customizable Themes and Keyboard Shortcuts
Mailspring offers multiple layouts and themes to match your desktop or mood. It also supports keyboard shortcuts, making it easier to manage your emails efficiently.AI Integration
While Mailspring itself does not heavily integrate AI for writing emails, it does use some automated features like translation and spell check, which are based on language detection algorithms. However, there is no explicit AI-driven email writing tool built into Mailspring. The focus is more on providing a comprehensive set of productivity features to manage emails effectively.Security
Mailspring ensures that your email credentials are not sent to the cloud; all features run locally on your client, enhancing security and privacy.Conclusion
These features collectively make Mailspring a powerful tool for managing emails, enhancing productivity, and providing valuable insights into your email interactions.
Mailspring - Performance and Accuracy
Mailspring Overview
Mailspring is a modern email client that offers several compelling features, but it also has some notable performance and accuracy limitations.
Performance
Mailspring is praised for its speed and efficiency in general use, particularly with its lightning-fast search capabilities and user-friendly design. However, it encounters significant performance issues with large email threads or reply histories. For example, threads with more than 25-30 replies can cause the application to lag, and in some cases, even freeze completely, especially on certain operating systems like Ubuntu 20.04. Turning off features like spell check can mitigate this lag to some extent, but it does not resolve the issue entirely.
Accuracy and Features
Mailspring boasts several accurate and useful features, such as read receipts, link tracking, and a built-in translation feature, which help in tracking email engagement and breaking down language barriers. The email client also supports multiple email accounts and integrates well with various productivity tools, making it a versatile option for both personal and professional use.
Limitations
One of the significant limitations is the requirement for a special Mailspring account to fully utilize the client, which can be a deterrent for users who prefer not to manage additional accounts. Additionally, Mailspring does not function well offline, which is a critical drawback for users who need email access without an internet connection.
Areas for Improvement
Offline Access
The inability to use Mailspring offline is a major limitation that needs to be addressed.
Performance with Large Threads
Improving the handling of large email threads is crucial to enhance the overall user experience.
Account Management
Simplifying the account setup process and eliminating the need for a separate Mailspring account could make the client more appealing to a wider user base.
Conclusion
In summary, while Mailspring offers many useful features and generally performs well, it has specific areas that need improvement, particularly in handling large email threads and providing offline access.

Mailspring - Pricing and Plans
Mailspring Pricing Structure
Mailspring offers a straightforward and flexible pricing structure to cater to various user needs, particularly in the productivity tools category.Free Version
Mailspring provides a free version that is available for Mac, Windows, and Linux users. This free version allows you to use the basic features of the app, including setting up and managing your email accounts. However, some advanced features like Snooze, Send Later, Send Reminders, and Read Receipts are limited to a few uses per month before prompting you to upgrade.Mailspring Pro
To access unlimited use of the advanced features, you need to subscribe to Mailspring Pro. Here are the details:Subscription Options
Features in Mailspring Pro
The Pro subscription includes several key features:Additional Options
For teams or organizations, Mailspring offers discounts on multi-seat licenses and annual plans for easy billing. This allows for consolidated billing and administration, and all team members can use the same Mailspring ID.Support and Community
While Mailspring Pro does not include premium support due to its part-time development nature, all users have access to the Mailspring Community on Discourse, where they can find documentation, get community support, file bug reports, and browse themes and plugins.Summary
In summary, Mailspring offers a free version with limited advanced features and a Pro subscription that unlocks full access to its powerful email management tools, with options for both monthly and annual billing.
Mailspring - Integration and Compatibility
Mailspring Overview
Mailspring, an open-source email client, offers several integration and compatibility features that can enhance your email management experience.Platform Compatibility
Mailspring is available on multiple platforms, including Mac, Windows, and Linux, making it versatile for users across different operating systems.Email Provider Support
Mailspring supports major email providers such as Gmail, Google Apps, G Suite, and Microsoft Office 365/Outlook. Additionally, you can add other IMAP/SMTP providers using the “Add Custom IMAP Account…” option, although the compatibility may vary depending on the specific IMAP server settings. It’s important to note that Mailspring does not support Microsoft Exchange protocols directly, but many Exchange providers allow access via IMAP. POP/POP3 support is not available and is not planned for future implementation.App Integrations
Mailspring allows for several integrations through its plugin system. While these integrations can be useful, they may require some technical knowledge to set up. Here are some of the integrations available:Translation
Mailspring uses Google’s translation API for automated translation, which is localized into nine different languages.Google Contacts
You can import contacts from your Google account, although Mailspring does not have a dedicated address book.Other Plugins
Mailspring supports various plugins, but setting them up can be challenging for non-tech-savvy users. These plugins can include task management apps, chat and video conferencing tools, and more, but they often require some knowledge of how to integrate them.Additional Features
Mailspring also offers features like a unified inbox, advanced search, email tracking with read receipts, and the ability to send emails later with reminders. These features can be integrated into your workflow to improve productivity.Limitations
While Mailspring has many useful features, it is still an open-source product and may lack some features available in more established email clients like Gmail or Outlook. For example, users have requested features like keyboard shortcuts to mark emails as spam, which are not yet available.Conclusion
In summary, Mailspring provides a solid foundation for managing multiple email accounts across various platforms and offers several integration options, although some may require technical expertise to set up. Its compatibility with major email providers and additional productivity features make it a viable option for those seeking an open-source email client.
Mailspring - Customer Support and Resources
Support Resources
FAQ Section
Community Support
Quick Start Guide
Documentation and Help Section
Help Section
Docs
Extensibility and Customization
Plugins and Themes
Pro Features and Subscription Support
Mailspring Pro
Technical Support
GitHub Repository
By leveraging these resources, users can effectively manage their email, troubleshoot issues, and enhance their overall productivity with Mailspring.

Mailspring - Pros and Cons
Advantages of Mailspring
Mailspring offers several features that make it a compelling email client for managing your email accounts efficiently:Unified Inbox
Mailspring allows you to manage multiple email accounts from various providers, including Gmail, Office 365, and any IMAP or SMTP account, all in one place.Speed and Efficiency
It is known for its lightning-fast search capabilities, making it easy to find specific emails quickly. The app also supports offline search, which is handy when you’re not online.Modern Features
Mailspring includes features like snoozing emails, setting reminders, and using templates to streamline your email writing process. It also offers read receipts, link tracking, and email analytics, which are particularly useful for business and sales professionals.Customization
The app provides six built-in themes, customizable keyboard shortcuts, and a signature editor that allows you to create custom signatures with images and links to social media profiles. It also supports multiple languages and offers a right-to-left layout for languages like Hebrew and Arabic.Integration and Productivity
Mailspring integrates smoothly with macOS, allowing you to manage your mailbox directly from the Notification Center. It also supports various productivity tools and offers features like send later options and follow-up reminders.Translation and Accessibility
The app includes a built-in translation feature, breaking down language barriers in email communication. It also provides spellchecking in multiple languages.Disadvantages of Mailspring
Despite its advantages, Mailspring has several drawbacks that users should be aware of:Slow Development and Improvement
The development of Mailspring has slowed down significantly since 2020, leading to a higher number of bugs and unaddressed feature requests. Users have reported frustration with the lack of progress.Sync Issues
Users have frequently encountered issues with Mailspring syncing to their devices, including blank white screens and delays in loading pages or connecting to new accounts.Limited Free Version
The free version of Mailspring allows you to add only up to four email accounts. Additional features, such as contact profiles, require a paid subscription of $8 per month.Poor Contact Management
Contact management features, including contact profiles, are only available with a paid subscription and do not support Outlook, Office 365, or Yahoo accounts.Technical Issues
Mailspring can sometimes feel slow or freeze, especially in long email threads. There have also been reports of email threads being deleted without user input.No Premium Support
Since Mailspring is not being developed full-time, it lacks the capacity to provide high-level support to its users.Additional Login Requirement
Users need to create a Mailspring ID to access special features, which adds an extra login and password to manage. Customizations are not saved across devices. Overall, while Mailspring offers a range of useful features for email management, it also comes with several significant drawbacks that users need to consider.
Mailspring - Comparison with Competitors
When Comparing Mailspring to Other Email Clients
In the productivity tools category, several unique features and advantages stand out:
Unified Inbox and Multi-Platform Support
Mailspring allows users to manage multiple email accounts from various providers (such as Gmail, Office 365, iCloud, and IMAP/SMTP) in a single, unified inbox. This feature is similar to what you might find in other clients like Microsoft Outlook or Mozilla Thunderbird, but Mailspring’s support for Mac, Linux, and Windows makes it particularly versatile.
Advanced Search Capabilities
Mailspring boasts advanced search functionality, similar to Gmail, which indexes your mail and allows for detailed search queries across all connected accounts. This makes finding specific emails much easier, a feature that is also present in clients like Microsoft Outlook but is particularly optimized in Mailspring.
Translation and Language Support
One of the standout features of Mailspring is its built-in translation service, which can translate emails into several languages, including Spanish, Russian, simplified Chinese, French, and German. This feature is unique and particularly useful for users who communicate across different language barriers. Additionally, Mailspring auto-detects the language you’re using and provides spell checking in that language.
Customization and Themes
Mailspring offers customizable themes, layouts, and a signature editor that allows users to create custom signatures with images and links to social media profiles. This level of customization is also available in other clients, but Mailspring’s user-friendly interface makes it particularly accessible.
Productivity Features
Mailspring Pro includes several advanced features such as read receipts, link tracking, snoozing emails, setting reminders, and sending emails later. These features are similar to what you might find in other premium email clients like Superhuman or Sanebox, but Mailspring’s pricing is more affordable at $8 per month.
Data Privacy
Mailspring is notable for its strong focus on data privacy. It does not send email credentials, passwords, or mail data to the cloud, and all mail is synced on the local computer. This makes it a more secure option compared to some other email clients that may store data in the cloud.
Alternatives
If you’re looking for alternatives to Mailspring, here are a few options:
Microsoft Outlook
Outlook offers a unified inbox and advanced search capabilities but lacks the translation features and some of the customization options available in Mailspring. It also integrates well with Microsoft Office tools, which can be a significant advantage for users within the Microsoft ecosystem.
Mozilla Thunderbird
Thunderbird is another multi-platform email client that supports multiple email accounts and offers customization options. However, it does not have the same level of advanced search or translation features as Mailspring.
Superhuman
Superhuman is a premium email client that offers advanced productivity features like read receipts and link tracking but at a higher cost than Mailspring. It is known for its speed and efficiency but lacks the multi-language support and some customization options of Mailspring.
Conclusion
In summary, Mailspring stands out with its unified inbox, advanced search, translation features, and strong focus on data privacy, making it a compelling choice for users seeking a versatile and user-friendly email client.

Mailspring - Frequently Asked Questions
Frequently Asked Questions about Mailspring
What is Mailspring and what are its key features?
Mailspring is a desktop email client available for macOS, Windows, and Linux. It offers a range of modern features such as a unified inbox, snoozing emails, reminders, templates, offline search, and support for Gmail labels. It also includes features like customizable themes, keyboard shortcuts, and integration with macOS features like Quicklook and Notification Center.Is Mailspring free to use?
Yes, Mailspring is free to use forever for Mac, Windows, and Linux. The basic version includes many features, and you can use some of the Pro features a few times a month for free. However, for unlimited use of Pro features like read receipts, link tracking, and send later, you need to purchase a Mailspring Pro subscription.What does a Mailspring Pro subscription offer?
A Mailspring Pro subscription adds several advanced features, including read receipts, link tracking, send later, reminders, contact profiles, email analytics, and more. It costs $8 per month or $85 per year. These features are particularly useful for sales and business users who need more detailed email management and tracking.Which email providers does Mailspring support?
Mailspring supports all IMAP providers, including Gmail, Office 365, iCloud, Outlook.com, and Yahoo!. However, it does not support Microsoft Exchange ActiveSync.Can Mailspring handle multiple email accounts?
Yes, Mailspring allows you to manage multiple email accounts from a single inbox. You can see all your emails in a unified view, making it easier to manage your messages across different accounts.Does Mailspring offer translation features?
Yes, Mailspring includes built-in translation capabilities. It can translate messages written in other languages into your system language, and it also auto-detects the language you’re using and spell checks in that language. The app has been translated into several languages, including German, French, Spanish, Korean, Japanese, Chinese, Polish, and Brazilian Portuguese.How does Mailspring handle email search?
Mailspring indexes your mail, allowing you to use advanced, Gmail-style search queries to search message contents across all your connected accounts. This feature helps you find emails quickly and efficiently.Can I customize Mailspring with themes and keyboard shortcuts?
Yes, Mailspring is highly customizable. It comes with six built-in themes, and you can also create custom keyboard shortcuts to enhance your productivity. Additionally, you can set up mail rules to help you achieve “inbox zero”.Does Mailspring support gestures and drag-and-drop functionality?
Yes, Mailspring supports gestures like swiping to archive emails from the thread list. It also includes drag-and-drop functionality, allowing you to move emails, add attachments, and more with ease.How does Mailspring handle notifications?
Mailspring provides rich notifications that allow you to reply directly from the Notification Center. This feature integrates well with macOS, making it convenient to manage your emails without opening the full app.
Mailspring - Conclusion and Recommendation
Final Assessment of Mailspring
Mailspring is a versatile and feature-rich email client that can significantly enhance productivity, particularly for those who manage multiple email accounts and need advanced email management tools.Key Features and Benefits
- Unified Inbox: Allows users to manage multiple email accounts from a single interface.
- Advanced Search: Enables quick and efficient searching of emails.
- Snooze Emails and Send Later: Helps in managing email workflow by delaying or scheduling emails.
- Read Receipts and Link Tracking: Useful for marketing and communications professionals to track email engagement.
- Customizable Themes, Keyboard Shortcuts, and Touch and Gesture Support: Enhance user experience and efficiency.
- Translation and Spell Check: Ensure clear and error-free communication.
Who Would Benefit Most
Mailspring is best suited for several types of users:- Casual Users: Those who need basic email features and appreciate the free version’s offerings.
- Professional Users: Individuals who can benefit from the Pro version’s advanced features like read receipts, link tracking, and mailbox insights.
- Marketing and Communications Professionals: Those who need to track email activity, such as open rates and link clicks, to optimize their campaigns.
Limitations and Considerations
While Mailspring offers many benefits, there are some limitations to consider:- Syncing Issues: Some users have reported frequent syncing problems, which can lead to missed messages.
- Lack of Customer Support: As an open-source, community-driven project, Mailspring lacks a formal support infrastructure, which can be frustrating for users encountering issues.
- Stability Issues: Users have reported bugs and system crashes, which can impact reliability.