G2 Vendor Directory

Microsoft Outlook vs. K-9 Mail

A side-by-side comparison based on G2 review data.

MetricMicrosoft Outlook

by Microsoft

K-9 Mail

by Opensource

Overall rating4.54.5
Review count3,55913
Ease of use9.18.7
Ease of setup9.210.0
Quality of support8.88.6
Meets requirements9.39.0
NPS69.5076369.230769
Small Business25.2%46.2%
Mid-Market36.5%30.8%
Enterprise38.2%23.1%
Total page views3,586137
Total LLM citations9,330948

Microsoft Outlook

Microsoft Outlook is a comprehensive email and calendar application designed to help users stay connected and organized across various devices. It integrates email, calendar, contacts, and tasks into a single platform, enabling efficient management of communications and schedules. With a Microsoft 365 subscription, users can share attachments directly from OneDrive, access contacts, and view LinkedIn profiles, enhancing productivity and collaboration.

Pros

  • Ease of Use
  • Calendar Integration
  • Integrations
  • Scheduling
  • Features
  • Intuitive

K-9 Mail

K-9 is an opensource email client based on the Email application shipped with the initial release of Android. K-9 is focused on making it easy to chew through large volumes of email.

Pros