# Best Email Client Software for Medium-Sized Businesses - Page 2

*By [Neeraja Prakash](https://research.g2.com/insights/author/neeraja-prakash)*


Products classified in the overall Email Client category are similar in many regards and help companies of all sizes solve their business problems. However, medium-sized business features, pricing, setup, and installation differ from businesses of other sizes, which is why we match buyers to the right Medium-Sized Business Email Client to fit their needs. Compare product ratings based on reviews from enterprise users or connect with one of G2's buying advisors to find the right solutions within the Medium-Sized Business Email Client category.

In addition to qualifying for inclusion in the Email Client Software category, to qualify for inclusion in the Medium-Sized Business Email Client Software category, a product must have at least 10 reviews left by a reviewer from a medium-sized business.





## Top Email Client Software at a Glance
| # | Product | Rating | Best For | What Users Say |
|---|---------|--------|----------|----------------|
| 1 | [Microsoft Outlook](https://www.g2.com/products/microsoft-outlook/reviews) | 4.5/5.0 (3,424 reviews) | Unified email, calendar, and task workflows inside Microsoft 365 | "[Gen Z-Friendly Interface with Powerful Features That Beat Gmail](https://www.g2.com/survey_responses/microsoft-outlook-review-13063597)" |
| 2 | [Microsoft 365](https://www.g2.com/products/microsoft365/reviews) | 4.6/5.0 (5,529 reviews) | Cross-app email with real-time collaboration | "[Seamless Microsoft 365 Integration with Strong Security and Copilot Productivity Boost](https://www.g2.com/survey_responses/microsoft-365-review-13084482)" |
| 3 | [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) | 4.5/5.0 (53,534 reviews) | Calendar-synced meeting scheduling with AI follow-ups | "[Reliable Meetings with Smart AI Summaries and Seamless Collaboration](https://www.g2.com/survey_responses/zoom-workplace-review-12831216)" |
| 4 | [Missive](https://www.g2.com/products/missive/reviews) | 4.7/5.0 (841 reviews) | Collaborative shared-inbox email with in-thread teaming | "[Managing Patient Follow Ups and Clinic Communication Became More Organized](https://www.g2.com/survey_responses/missive-review-12858905)" |
| 5 | [Superhuman Mail](https://www.g2.com/products/superhuman-mail/reviews) | 4.8/5.0 (1,240 reviews) | Keyboard-driven inbox-zero email triage | "[Seamless All-in-One Integrations That Keep Everything in One Window](https://www.g2.com/survey_responses/superhuman-mail-review-12938944)" |
| 6 | [Front](https://www.g2.com/products/front/reviews) | 4.7/5.0 (2,444 reviews) | Collaborative shared-inbox email with internal threading | "[Front: A Blessing for Our Team](https://www.g2.com/survey_responses/front-review-12997871)" |
| 7 | [Thunderbird](https://www.g2.com/products/thunderbird/reviews) | 4.3/5.0 (334 reviews) | Multi-account email consolidation with offline-first privacy | "[Still the most reliable open-source email client out there](https://www.g2.com/survey_responses/thunderbird-review-12484779)" |
| 8 | [Shift](https://www.g2.com/products/redbrick-shift/reviews) | 4.5/5.0 (263 reviews) | Multi-account email with unified workspace switching | "[Effortless Staff Training with Shift](https://www.g2.com/survey_responses/shift-review-13139656)" |
| 9 | [Amazon WorkMail](https://www.g2.com/products/amazon-workmail/reviews) | 3.6/5.0 (37 reviews) | AWS-native encrypted business email and calendaring | "[Very good mail system for integration with AWS.](https://www.g2.com/survey_responses/amazon-workmail-review-12520024)" |
| 10 | [Spark for Teams](https://www.g2.com/products/spark-for-teams/reviews) | 4.4/5.0 (22 reviews) | Collaborative inbox triage with in-context threading | "[Clean UX and Spark AI Make Team Email Access Easy](https://www.g2.com/survey_responses/spark-for-teams-review-12722914)" |


## G2 Grid® for Email Client Software
![G2 Grid® for Email Client Software plotting products by satisfaction and market presence](https://www.g2.com/categories/email-client/grids.png?focus%5B%5D=662&focus%5B%5D=663&focus%5B%5D=7372&focus%5B%5D=10739&focus%5B%5D=84997&focus%5B%5D=20351&focus%5B%5D=1720&focus%5B%5D=101102)
Highlighted products: Microsoft Outlook, Microsoft 365, Zoom Workplace, Front, Superhuman Mail, Missive, Thunderbird, and Outlook4Gmail.
Underlying data: [Grid® JSON](https://www.g2.com/categories/email-client/grids.json?focus%5B%5D=microsoft-outlook&focus%5B%5D=microsoft365&focus%5B%5D=zoom-workplace&focus%5B%5D=front&focus%5B%5D=superhuman-mail&focus%5B%5D=missive&focus%5B%5D=thunderbird&focus%5B%5D=outlook4gmail&segment=mid-market)


## How Many Email Client Software Products Does G2 Track?
**Total Products under this Category:** 52

### Category Stats (Jul 2026)
- **Average Rating**: 4.3/5 The average rating of products in this category, based on all submitted ratings
- **Top Trending Product**: Thunderbird (+0.05%) - Among all products in this category, Thunderbird recorded the largest rating increase compared to last month
*Last updated: July 22, 2026*


## How Does G2 Rank Email Client Software Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 72,800+ Authentic Reviews
- 52+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.



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## What Is Email Client Software?

[Collaboration & Productivity Software](https://www.g2.com/categories/collaboration-productivity)

## What Software Categories Are Similar to Email Client Software?

- [Email Software](https://www.g2.com/categories/email)
- [Help Desk Software](https://www.g2.com/categories/help-desk)
- [Calendar Software](https://www.g2.com/categories/calendar-software)
- [Shared Inbox Software](https://www.g2.com/categories/shared-inbox)
- [Business Instant Messaging Software](https://www.g2.com/categories/business-instant-messaging)
- [Email Management Software](https://www.g2.com/categories/email-management)