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FlowCrypt vs Mailspring

Professional comparison and analysis to help you choose the right software solution for your needs.

FlowCrypt icon
FlowCrypt
Mailspring icon
Mailspring

FlowCrypt vs Mailspring: The Verdict

⚡ Summary:

FlowCrypt: FlowCrypt is an email encryption plugin for Gmail that allows users to send and receive end-to-end encrypted emails. It integrates with a user's existing Gmail account to enable easy email encryption.

Mailspring: Mailspring is an open-source email client for personal use. It aims to provide an interface that is both intuitive and feature-rich for managing your email effectively.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature FlowCrypt Mailspring
Sugggest Score — —
Category Security & Privacy Social & Communications
Pricing — Open Source

Product Overview

FlowCrypt
FlowCrypt

Description: FlowCrypt is an email encryption plugin for Gmail that allows users to send and receive end-to-end encrypted emails. It integrates with a user's existing Gmail account to enable easy email encryption.

Type: software

Mailspring
Mailspring

Description: Mailspring is an open-source email client for personal use. It aims to provide an interface that is both intuitive and feature-rich for managing your email effectively.

Type: software

Pricing: Open Source

Key Features Comparison

FlowCrypt
FlowCrypt Features
  • End-to-end email encryption
  • Seamless integration with Gmail
  • Easy to use browser extensions
  • OpenPGP support
  • Encrypted reply feature
  • Message screening
  • Support for attachments
  • Key management tools
  • Address book encryption
Mailspring
Mailspring Features
  • Unified Inbox
  • Snooze Emails
  • Send Later
  • Email Templates
  • Email Tracking
  • Email Reminders
  • Integration with Calendar
  • Theme Customization
  • Plugin Support

Pros & Cons Analysis

FlowCrypt
FlowCrypt

Pros

  • Strong encryption protects privacy
  • Easy to set up and use
  • Works with existing Gmail account
  • Free basic version available
  • Open source code can be audited

Cons

  • Requires recipient to also use FlowCrypt
  • Browser extension can affect performance
  • No support for other email providers
  • Premium version requires subscription
Mailspring
Mailspring

Pros

  • Open source and free
  • Good selection of features
  • Intuitive and easy to use interface
  • Good customizability

Cons

  • Limited native integrations compared to proprietary options
  • Mobile app only available on iOS
  • Lacks some advanced features like CRM

Pricing Comparison

FlowCrypt
FlowCrypt
  • Not listed
Mailspring
Mailspring
  • Open Source

Related Comparisons

Learn More About Each Product

FlowCrypt
FlowCrypt
Reviews, pricing & alternatives →
Mailspring
Mailspring
Reviews, pricing & alternatives →

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