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K-9 Mail vs Things

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

K-9 Mail icon
K-9 Mail
Things icon
Things

K-9 Mail vs Things: The Verdict

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature K-9 Mail Things
Sugggest Score — —
Category Social & Communications Productivity
Pricing Open Source —

Product Overview

K-9 Mail
K-9 Mail

Description: K-9 Mail is an open source email client for Android focused on security and privacy. It supports multiple accounts, search, tagging, notifications and more.

Type: software

Pricing: Open Source

Things
Things

Description: Things is a task management app for Mac and iOS that helps users organize projects and to-do lists. It has a simple, clean interface and features like tags, reminders, and deep Apple integration.

Type: software

Key Features Comparison

K-9 Mail
K-9 Mail Features
  • Open source email client for Android
  • Supports IMAP, POP3 and Exchange 2003/2007
  • Multiple account support
  • Full PGP/MIME support
  • Search messages
  • Message tagging
  • Notification options
  • Dark mode
Things
Things Features
  • Task management
  • Project organization
  • To-do lists
  • Tags
  • Reminders
  • Deep Apple integration

Pros & Cons Analysis

K-9 Mail
K-9 Mail
Pros
  • Free and open source
  • Strong focus on privacy and security
  • Active development community
  • Highly customizable
  • Lightweight and fast
Cons
  • Lacks some features of proprietary email apps
  • Less intuitive UI than some alternatives
  • PGP support can be tricky to set up
  • Some stability issues on newer Android versions
Things
Things
Pros
  • Simple, clean interface
  • Powerful organization features
  • Seamless syncing between Mac, iPhone, iPad
  • Strong Apple integration
Cons
  • No web app
  • Can be pricey for extensive features
  • iOS-focused features may not appeal to non-Apple users

Pricing Comparison

K-9 Mail
K-9 Mail
  • Open Source
Things
Things
  • Not listed

Related Comparisons

Apple Mail
vs K-9 Mail vs Things
Microsoft Office Outlook
vs K-9 Mail vs Things
Microsoft To Do
vs K-9 Mail vs Things

Learn More About Each Product

K-9 Mail
K-9 Mail
Reviews, pricing & alternatives →
Things
Things
Reviews, pricing & alternatives →

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