# Mailspring, Zimbra Desktop vs Microsoft Outlook Comparison | | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Star Rating** | 3.8 out of 5 | 4.4 out of 5 | 4.5 out of 5 | | **Total Reviews** | 18 | 22 | 3,483 | | **Largest Market Segment** | Small-Business (64.7% of reviews) | Mid-Market (45.5% of reviews) | Enterprise (38.2% of reviews) | | **Entry Level Price** | No pricing available | No pricing available | No pricing available | --- ## Top Pros & Cons ### Mailspring **Not enough data** ### Zimbra Desktop **Not enough data** ### Microsoft Outlook Pros: - Ease of Use (227 reviews) - Calendar Integration (125 reviews) Cons: - Slow Loading (84 reviews) - Slow Performance (82 reviews) --- ## Ratings Comparison | Rating | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Meets Requirements** | 7.3 (16 reviews) | 8.9 (20 reviews) | 9.2 (2733 reviews) | | **Ease of Use** | 8.8 (16 reviews) | 8.3 (20 reviews) | 9.0 (2817 reviews) | | **Ease of Setup** | Not enough data | Not enough data | 9.1 (989 reviews) | | **Ease of Admin** | Not enough data | Not enough data | 8.6 (320 reviews) | | **Quality of Support** | 7.1 (8 reviews) | 8.2 (19 reviews) | 8.6 (2226 reviews) | | **Has the product been a good partner in doing business?** | Not enough data | Not enough data | 8.8 (301 reviews) | | **Product Direction (% positive)** | 6.1 (15 reviews) | 7.7 (20 reviews) | 8.5 (2657 reviews) | --- ## Pricing ### Mailspring #### Entry-Level Pricing No pricing available #### Free Trial No information available ### Zimbra Desktop #### Entry-Level Pricing No pricing available #### Free Trial No information available ### Microsoft Outlook #### Entry-Level Pricing No pricing available #### Free Trial No information available --- ## Features Comparison By Category ### Email Client | Product | Score | Reviews | |---|---|---| | **Mailspring** | 8.4/10 | 12 | | **Zimbra Desktop** | 8.7/10 | 10 | | **Microsoft Outlook** | 8.8/10 | 1300 | #### Inbox Tools | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Unified Inbox** | 9.2 (11 reviews) | 9.5 (10 reviews) | 9.1 (1091 reviews) | | **Filters** | 7.3 (10 reviews) | 8.8 (10 reviews) | 8.9 (1164 reviews) | | **Reminders** | 8.6 (7 reviews) | 8.3 (10 reviews) | 9.3 (1168 reviews) | | **Notifications** | 8.6 (11 reviews) | 9.0 (10 reviews) | 9.2 (1175 reviews) | #### Coordination Tools | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Calendar** | 8.6 (7 reviews) | 9.1 (9 reviews) | 9.3 (1192 reviews) | | **Contacts** | 7.5 (10 reviews) | 8.3 (10 reviews) | 8.9 (1142 reviews) | | **Task Management** | 9.7 (6 reviews) | 8.9 (9 reviews) | 8.8 (1085 reviews) | #### Software Options | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Desktop Application** | 7.8 (12 reviews) | 8.3 (10 reviews) | 9.2 (1157 reviews) | | **Mobile Application** | Not enough data | 7.9 (8 reviews) | 8.7 (1107 reviews) | #### Email Client - Agentic AI | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | 7.5 (112 reviews) | | **Cross-system Integration** | Not enough data | Not enough data | 7.8 (118 reviews) | ### Calendar | Product | Score | Reviews | |---|---|---| | **Mailspring** | N/A | N/A | | **Zimbra Desktop** | N/A | N/A | | **Microsoft Outlook** | 8.5/10 | 1482 | #### Calendar View | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Multi-Calendar View** | Not enough data | Not enough data | 9.0 (1223 reviews) | | **Customizable Viewing** | Not enough data | Not enough data | 8.9 (1235 reviews) | #### Shared Calendar | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Calendar Collaboration** | Not enough data | Not enough data | 9.0 (1236 reviews) | | **Multiple Calendar Management** | Not enough data | Not enough data | 8.9 (1183 reviews) | #### Accessibility | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Screen Reader Compatibility** | Not enough data | Not enough data | 8.8 (1057 reviews) | | **Keyboard Shortcuts** | Not enough data | Not enough data | 8.6 (1077 reviews) | #### Integration | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Sync Multiple Calendars** | Not enough data | Not enough data | 8.8 (1135 reviews) | | **Import Events** | Not enough data | Not enough data | 8.8 (1139 reviews) | | **Software Integrations** | Not enough data | Not enough data | 8.9 (1238 reviews) | #### Notifications | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Customized Calendar Notifications** | Not enough data | Not enough data | 9.0 (1179 reviews) | | **Location-Based Alerts** | Not enough data | Not enough data | 8.5 (970 reviews) | #### Generative AI | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **AI Text-to-Image** | Not enough data | Not enough data | 7.4 (420 reviews) | | **AI Text-to-Speech** | Not enough data | Not enough data | 7.5 (421 reviews) | | **AI Image-to-Text** | Not enough data | Not enough data | 7.3 (420 reviews) | #### Agentic AI - Calendar | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Cross-system Integration** | Not enough data | Not enough data | 7.7 (165 reviews) | ### Email | Product | Score | Reviews | |---|---|---| | **Mailspring** | N/A | N/A | | **Zimbra Desktop** | N/A | N/A | | **Microsoft Outlook** | 8.0/10 | 503 | #### Generative AI | Feature | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **AI Text Generation** | Not enough data | Not enough data | 7.8 (464 reviews) | | **AI Text Summarization** | Not enough data | Not enough data | 7.9 (459 reviews) | | **AI Text-to-Speech** | Not enough data | Not enough data | 7.7 (452 reviews) | | **Autonomous Task Execution** | Not enough data | Not enough data | 7.9 (140 reviews) | | **Cross-system Integration** | Not enough data | Not enough data | 8.3 (150 reviews) | | **Proactive Assistance** | Not enough data | Not enough data | 8.1 (141 reviews) | --- ## Categories **Shared Categories (1):** [Email Client Software](https://www.g2.com/categories/email-client) **Unique to Microsoft Outlook (2):** [Calendar Software](https://www.g2.com/categories/calendar-software), [Email Software](https://www.g2.com/categories/email) --- ## Reviewer Demographics ### By Company Size | Segment | Mailspring | Zimbra Desktop | Microsoft Outlook | |---|---|---|---| | **Small-Business** | 64.7% | 18.2% | 25.2% | | **Mid-Market** | 11.8% | 45.5% | 36.6% | | **Enterprise** | 23.5% | 36.4% | 38.2% | ### By Industry #### Mailspring - **Computer Software:** 29.4% - **Information Technology and Services:** 17.6% - **Utilities:** 5.9% - **Transportation/Trucking/Railroad:** 5.9% - **Marketing and Advertising:** 5.9% - **Insurance:** 5.9% - **Human Resources:** 5.9% - **Higher Education:** 5.9% - **Design:** 5.9% - **Consumer Services:** 5.9% - **Other:** 5.9% #### Zimbra Desktop - **Oil & Energy:** 13.6% - **Information Technology and Services:** 13.6% - **Writing and Editing:** 9.1% - **Higher Education:** 9.1% - **Education Management:** 9.1% - **Publishing:** 4.5% - **Online Media:** 4.5% - **Media Production:** 4.5% - **Marketing and Advertising:** 4.5% - **Human Resources:** 4.5% - **Other:** 22.7% #### Microsoft Outlook - **Information Technology and Services:** 13.3% - **Computer Software:** 8.1% - **Financial Services:** 3.6% - **Hospital & Health Care:** 3.5% - **Higher Education:** 3.3% - **Marketing and Advertising:** 3.3% - **Education Management:** 2.8% - **Staffing and Recruiting:** 2.6% - **Accounting:** 2.5% - **Non-Profit Organization Management:** 2.2% - **Other:** 54.7% --- ## Alternatives ### Alternatives to Mailspring - [Thunderbird](https://www.g2.com/products/thunderbird/reviews) — 4.3/5 stars (339 reviews) - [Spike](https://www.g2.com/products/spike/reviews) — 4.6/5 stars (262 reviews) - [Mailbird](https://www.g2.com/products/mailbird/reviews) — 3.6/5 stars (101 reviews) - [eM Client](https://www.g2.com/products/em-client/reviews) — 4.0/5 stars (61 reviews) - [BlueMail](https://www.g2.com/products/bluemail/reviews) — 4.3/5 stars (53 reviews) - [Front](https://www.g2.com/products/front/reviews) — 4.7/5 stars (2467 reviews) - [Shift](https://www.g2.com/products/redbrick-shift/reviews) — 4.5/5 stars (264 reviews) - [Airmail](https://www.g2.com/products/airmail/reviews) — 3.6/5 stars (22 reviews) - [Missive](https://www.g2.com/products/missive/reviews) — 4.7/5 stars (832 reviews) - [Superhuman Mail](https://www.g2.com/products/superhuman-mail/reviews) — 4.7/5 stars (1252 reviews) ### Alternatives to Zimbra Desktop - [Thunderbird](https://www.g2.com/products/thunderbird/reviews) — 4.3/5 stars (339 reviews) - [Spike](https://www.g2.com/products/spike/reviews) — 4.6/5 stars (262 reviews) - [Front](https://www.g2.com/products/front/reviews) — 4.7/5 stars (2467 reviews) - [Mailbird](https://www.g2.com/products/mailbird/reviews) — 3.6/5 stars (101 reviews) - [Shift](https://www.g2.com/products/redbrick-shift/reviews) — 4.5/5 stars (264 reviews) - [Microsoft 365](https://www.g2.com/products/microsoft365/reviews) — 4.6/5 stars (5827 reviews) - [Superhuman Mail](https://www.g2.com/products/superhuman-mail/reviews) — 4.7/5 stars (1252 reviews) - [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56413 reviews) - [Missive](https://www.g2.com/products/missive/reviews) — 4.7/5 stars (832 reviews) - [eM Client](https://www.g2.com/products/em-client/reviews) — 4.0/5 stars (61 reviews) ### Alternatives to Microsoft Outlook - [Spike](https://www.g2.com/products/spike/reviews) — 4.6/5 stars (262 reviews) - [Google Workspace](https://www.g2.com/products/google-workspace/reviews) — 4.6/5 stars (48044 reviews) - [Superhuman Mail](https://www.g2.com/products/superhuman-mail/reviews) — 4.7/5 stars (1252 reviews) - [Zoho Mail](https://www.g2.com/products/zoho-mail/reviews) — 4.4/5 stars (717 reviews) - [Calendly](https://www.g2.com/products/calendly/reviews) — 4.7/5 stars (2643 reviews) - [Front](https://www.g2.com/products/front/reviews) — 4.7/5 stars (2467 reviews) - [Thunderbird](https://www.g2.com/products/thunderbird/reviews) — 4.3/5 stars (339 reviews) - [Proton Mail For Business](https://www.g2.com/products/proton-mail-for-business/reviews) — 4.6/5 stars (387 reviews) - [Shift](https://www.g2.com/products/redbrick-shift/reviews) — 4.5/5 stars (264 reviews) - [iCal](https://www.g2.com/products/ical/reviews) — 4.1/5 stars (196 reviews) --- ## Top Discussions ### Mailspring No discussions available for this product. ### Zimbra Desktop No discussions available for this product. ### Microsoft Outlook - Title: [What are the latest integrations and features in Microsoft Outlook that enhance email communication and productivity?](https://www.g2.com/discussions/microsoft-outlook-what-are-the-latest-integrations-and-features-in-microsoft-outlook-that-enhance-email-communication-a) — 6 comments, 3 upvotes > **Top comment:** "I like that you can pin conversations to the top of the email." - Title: [What are the features of Outlook?](https://www.g2.com/discussions/what-are-the-features-of-outlook) — 5 comments > **Top comment:** "Mail and calendar are the top features." - Title: [What business advantages does Outlook give over Gmail?](https://www.g2.com/discussions/best-for-business) — 5 comments, 1 upvote > **Top comment:** "There are several. One main one is that your email is stored (with Exchange) on your own server's rather than Google's. Also, there is built-in MS Office..." - Title: [What are the latest integrations and features in Microsoft Outlook that enhance email communication and productivity?](https://www.g2.com/discussions/what-are-the-latest-integrations-and-features-in-microsoft-outlook-that-enhance-email-communication-and-productivity) — 4 comments, 1 upvote > **Top comment:** "It's actually too much to generalize. But it has provided a stronger back protection against spam mails, an artificial intelligence integration that can..." - Title: [What is Microsoft Outlook used for?](https://www.g2.com/discussions/what-is-microsoft-outlook-used-for) — 4 comments > **Top comment:** "Microsoft outlook is used to send and receive emails. it is also used to manage calendar, tasks, meetings and contacts" --- **Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/mailspring-vs-zimbra-desktop-vs-microsoft-outlook)