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# BlueMail vs K-9 Mail Comparison - What are their main differences?

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BlueMailK-9 Mail[+ Add Product](#)

Reviews

**BlueMail** [

4.3/5(53)

](https://www.g2.com/products/bluemail/reviews#reviews)

**K-9 Mail** [

4.5/5(13)

](https://www.g2.com/products/k-9-mail/reviews#reviews)

Pricing

**BlueMail**
No pricing available

**K-9 Mail**
No pricing available

**Pricing Insights**
from reviews

Time to Implement

**BlueMail**
Not enough reviews yet

**K-9 Mail**
Not enough reviews yet

Return on Investment

**BlueMail**
Not enough reviews yet

**K-9 Mail**
Not enough reviews yet

Perceived Cost

**BlueMail**
$$$$$

**K-9 Mail**
Not enough reviews yet

Average Discount

**BlueMail**
Not enough reviews yet

**K-9 Mail**
Not enough reviews yet

Pros & Cons

**BlueMail**
[
Bug Issues (1)
](https://www.g2.com/products/bluemail/reviews?filters%5Bsentiment_snippet%5D=2434195&qs=pros-and-cons#reviews)[
Missing Features (1)
](https://www.g2.com/products/bluemail/reviews?filters%5Bsentiment_snippet%5D=2434186&qs=pros-and-cons#reviews)

**K-9 Mail**
Not enough data

Ratings

Meets Requirements

**BlueMail**

9.1

9.141

**K-9 Mail**

8.8

8.811

Ease of Use

**BlueMail**

9.1

9.141

**K-9 Mail**

8.5

8.511

Ease of Setup

**BlueMail**

8.7

8.713

**K-9 Mail**
Not enough data

Ease of Admin

**BlueMail**

8.7

8.710

**K-9 Mail**
Not enough data

Quality of Support

**BlueMail**

7.9

7.931

**K-9 Mail**

8.3

8.38

Has the product been a good partner in doing business?

**BlueMail**

8.3

8.310

**K-9 Mail**
Not enough data

Product Direction (% positive)

**BlueMail**

7.7

7.740

**K-9 Mail**

7.1

7.112

Features

Email Management[Hide 62 FeaturesShow 62 Features](javascript:void(0);)

8.0

7

Not enough data

Sorting & Filtering

Attachment Search

7.9(won by default)

7

Not enough data

Tags

7.3(won by default)

5

Not enough data

AI Sorting

Not enough data

Not enough data

Predefined Rules

Not enough data

Not enough data

Integrations

Gmail Integration

8.6(won by default)

6

Not enough data

Microsoft Outlook Integration

Not enough data

Not enough data

Apple Calendar Integration

Not enough data

Not enough data

Social Media Integration

Not enough data

Not enough data

Third-Party Integrations

Not enough data

Not enough data

Time Management

Unified Inbox

9.3(won by default)

7

Not enough data

Email Automation

6.7(won by default)

5

Not enough data

Snooze

Not enough data

Not enough data

Generative AI

AI Text Generation

Not enough data

Not enough data

AI Text-to-Speech

Not enough data

Not enough data

AI Text Summarization

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Agentic AI - Email Management

Autonomous Task Execution

Not enough data

Not enough data

Cross-system Integration

Not enough data

Not enough data

Additional Functionality

Whitelisting/Blacklisting

Not enough data

Not enough data

Customizable Fields

Not enough data

Not enough data

Signature Management

Not enough data

Not enough data

Shared Inboxes

Not enough data

Not enough data

Email Distribution

Not enough data

Not enough data

Prioritization

Not enough data

Not enough data

Customizable Forms

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Mobile App

Not enough data

Not enough data

Routing

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

Collaboration Tools

Not enough data

Not enough data

Inbox Management

Not enough data

Not enough data

Queue Management

Not enough data

Not enough data

Drag & Drop

Not enough data

Not enough data

Contact Management

Not enough data

Not enough data

Email Marketing

Not enough data

Not enough data

Data Recovery

Not enough data

Not enough data

Archiving & Retention

Not enough data

Not enough data

Real-Time Monitoring

Not enough data

Not enough data

Autoresponders

Not enough data

Not enough data

Multiple User Accounts

Not enough data

Not enough data

API

Not enough data

Not enough data

Real-Time Analytics

Not enough data

Not enough data

Customer Segmentation

Not enough data

Not enough data

Search/Filter

Not enough data

Not enough data

Support Ticket Management

Not enough data

Not enough data

Canned Responses

Not enough data

Not enough data

Workflow Management

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

Chat/Messaging

Not enough data

Not enough data

Response Management

Not enough data

Not enough data

Email Templates

Not enough data

Not enough data

Email Monitoring

Not enough data

Not enough data

Campaign Management

Not enough data

Not enough data

Email Tracking

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

Spam Blocker

Not enough data

Not enough data

Alerts/Notifications

Not enough data

Not enough data

Customizable Templates

Not enough data

Not enough data

Real-Time Reporting

Not enough data

Not enough data

Tagging

Not enough data

Not enough data

Campaign Analytics

Not enough data

Not enough data

Workflow Automation

Not enough data

Not enough data

Show 2 feature categories with incomplete data

Collaboration & Productivity[Hide 45 FeaturesShow 45 Features](javascript:void(0);)

Not enough data

Not enough data

Additional Functionality

Third-Party Integrations

Not enough data

Not enough data

To-Do List

Not enough data

Not enough data

@mentions

Not enough data

Not enough data

Single Sign On

Not enough data

Not enough data

File Management

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

Drag & Drop

Not enough data

Not enough data

Alerts/Notifications

Not enough data

Not enough data

Prioritization

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

Screen Sharing

Not enough data

Not enough data

Content Management

Not enough data

Not enough data

Brainstorming

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

File Transfer

Not enough data

Not enough data

Calendar Management

Not enough data

Not enough data

Status Tracking

Not enough data

Not enough data

Real-Time Notifications

Not enough data

Not enough data

Version Control

Not enough data

Not enough data

Task Management

Not enough data

Not enough data

Activity Tracking

Not enough data

Not enough data

Real Time Editing

Not enough data

Not enough data

Communication Management

Not enough data

Not enough data

Chat/Messaging

Not enough data

Not enough data

Tagging

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Assignment Management

Not enough data

Not enough data

Task Scheduling

Not enough data

Not enough data

Project Management

Not enough data

Not enough data

Collaboration Tools

Not enough data

Not enough data

Workflow Management

Not enough data

Not enough data

Secure Data Storage

Not enough data

Not enough data

File Sharing

Not enough data

Not enough data

Document Storage

Not enough data

Not enough data

Task Progress Tracking

Not enough data

Not enough data

Discussions/Forums

Not enough data

Not enough data

Commenting/Notes

Not enough data

Not enough data

Reporting & Statistics

Not enough data

Not enough data

Contact Management

Not enough data

Not enough data

Video Conferencing

Not enough data

Not enough data

Progress Tracking

Not enough data

Not enough data

Mobile Access

Not enough data

Not enough data

API

Not enough data

Not enough data

Document Management

Not enough data

Not enough data

Customizable Branding

Not enough data

Not enough data

Email Client[Hide 11 FeaturesShow 11 Features](javascript:void(0);)

Not enough data

Not enough data

Inbox Tools

Unified Inbox

Not enough data

Not enough data

Filters

Not enough data

Not enough data

Reminders

Not enough data

Not enough data

Notifications

Not enough data

Not enough data

Coordination Tools

Calendar

Not enough data

Not enough data

Contacts

Not enough data

Not enough data

Task Management

Not enough data

Not enough data

Software Options

Desktop Application

Not enough data

Not enough data

Mobile Application

Not enough data

Not enough data

Email Client - Agentic AI

Autonomous Task Execution

Not enough data

Not enough data

Cross-system Integration

Not enough data

Not enough data

User Insights

Reviewers' Company Size

[![BlueMail](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_ea674f9d92a760d473952ccec1d4bc02/bluemail.jpg "BlueMail")](https://www.g2.com/products/bluemail/reviews)

BlueMail

Small-Business(50 or fewer emp.)

56.5%

Mid-Market(51-1000 emp.)

13.0%

Enterprise(\> 1000 emp.)

30.4%

[![K-9 Mail](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_79eb827a4b3b4b68fc1a6445d2d04d17/k-9-mail.png "K-9 Mail")](https://www.g2.com/products/k-9-mail/reviews)

K-9 Mail

Small-Business(50 or fewer emp.)

46.2%

Mid-Market(51-1000 emp.)

30.8%

Enterprise(\> 1000 emp.)

23.1%

Small-Business

(50 or fewer emp.)

56.5%

46.2%

Mid-Market

(51-1000 emp.)

13.0%

30.8%

Enterprise

(\> 1000 emp.)

30.4%

23.1%

Reviewers' Industry

[![BlueMail](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_ea674f9d92a760d473952ccec1d4bc02/bluemail.jpg "BlueMail")](https://www.g2.com/products/bluemail/reviews)
BlueMail

Information Technology and Services

13.0%

Management Consulting

6.5%

Hospital & Health Care

6.5%

Consumer Services

4.3%

Education Management

4.3%

Other

65.2%

[![K-9 Mail](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_79eb827a4b3b4b68fc1a6445d2d04d17/k-9-mail.png "K-9 Mail")](https://www.g2.com/products/k-9-mail/reviews)
K-9 Mail

Computer Software

15.4%

Venture Capital & Private Equity

7.7%

Translation and Localization

7.7%

Retail

7.7%

Pharmaceuticals

7.7%

Other

53.8%

FAQs

## BlueMail vs K-9 Mail FAQs

Generated using AI

Last updated: August 14, 2026

### What is the difference between K-9 Mail vs BlueMail?

K-9 Mail stands out for its higher G2 rating and open-source, privacy-focused approach, while BlueMail is recognized for its user-friendly interface and broader platform support.

| [K-9 Mail](https://www.g2.com/products/k-9-mail/reviews) | [BlueMail](https://www.g2.com/products/bluemail/reviews) |
| --- | --- |
| 4.5/5 (13 reviews) | 4.3/5 (53 reviews) |
| — | — |
| — | 8.7 |
| 8.3 | 7.9 |
| Open-source, privacy-enhancing features | User-friendly interface, multi-platform support |

### How do the pricing models of K-9 Mail and BlueMail compare?

K-9 Mail is perceived as the stronger value due to its open-source, free model and absence of ads, while BlueMail is also praised for being free but receives mixed feedback on value due to occasional technical issues.

- **K-9 Mail:** Reviewers highlight that K-9 Mail is completely free, open-source, and does not display ads or read user emails, making it a strong value choice.
- **BlueMail:** Reviewers appreciate that BlueMail is free and offers a robust feature set, but some mention frustration with technical issues and support responsiveness, which can impact perceived value.

### What are the best alternatives to K-9 Mail and BlueMail?

The top three alternatives to K-9 Mail and BlueMail are Thunderbird, Outlook, and Spike.

| Product | G2 Rating (reviews) | Largest Segment | Pricing Insight | Top Reviewer-Cited Strength |
| --- | --- | --- | --- | --- |
| [K-9 Mail](https://www.g2.com/products/k-9-mail/reviews) | 4.5/5 (13 reviews) | — | Free, open-source, no ads | Privacy-enhancing, open-source |
| [BlueMail](https://www.g2.com/products/bluemail/reviews) | 4.3/5 (53 reviews) | — | Free, robust features | User-friendly, multi-platform |
| [Thunderbird](https://www.g2.com/products/thunderbird/reviews) | 4.3/5 (340 reviews) | Small-Business | — | Feature-rich, strong customization |
| [Outlook](https://www.g2.com/products/microsoft-outlook/reviews) | 4.5/5 (3,523 reviews) | Enterprise | — | Integration with Microsoft ecosystem |
| [Spike](https://www.g2.com/products/spike/reviews) | 4.6/5 (262 reviews) | Small-Business | — | Conversational email experience |

### Which Email Client features should I prioritize when comparing K-9 Mail and BlueMail?

Buyers should prioritize privacy and security, ease of use, multi-account management, platform compatibility, and support responsiveness when comparing K-9 Mail and BlueMail.

- **Privacy and Security:** K-9 Mail is frequently praised for its open-source nature and privacy-enhancing features, including PGP encryption; BlueMail is noted for security but lacks the same open-source transparency.
- **Ease of Use:** BlueMail scores 9.1 on Ease of Use, while K-9 Mail scores 8.5.
- **Multi-Account Management:** Both products are highlighted for handling multiple email accounts efficiently in recent reviews.
- **Platform Compatibility:** BlueMail is recognized for supporting Android, Windows, iOS, and Linux, while K-9 Mail is focused on Android.
- **Support Responsiveness:** K-9 Mail scores 8.3 for Quality of Support, compared to BlueMail's 7.9.

### What are the pros and cons of K-9 Mail vs BlueMail?

K-9 Mail's headline strength is its open-source, privacy-focused design, while BlueMail's is its user-friendly interface and multi-platform support.

- **K-9 Mail strengths:** Open-source and privacy-enhancing features, no ads, supports multiple accounts, and PGP encryption.
- **K-9 Mail trade-offs:** Reviewers mention an outdated user interface and limited folder import capabilities.
- **BlueMail strengths:** User-friendly interface, easy setup, supports multiple platforms (Android, Windows, iOS, Linux), and robust multi-account management.
- **BlueMail trade-offs:** Reviewers note technical issues, occasional lag with many accounts, and support responsiveness concerns, with all-time mentions for bug issues (1), missing features (1), and technical issues (1).

### Is K-9 Mail or BlueMail better for small businesses?

BlueMail is the better fit for small businesses, as it is widely used in this segment and praised for its ease of use and multi-account management.

- **K-9 Mail:** No segment data available, but reviewers highlight its privacy and open-source benefits for individual and business use.
- **BlueMail:** Largest segment is Small-Business, with reviewers consistently citing its user-friendly interface and ability to manage multiple business accounts efficiently.

### Which Email Client platform has better integrations?

BlueMail and K-9 Mail are at parity for integrations, as no recent reviews cite specific third-party integrations for either product.

- **K-9 Mail:** No reviewer-cited integrations in recent reviews.
- **BlueMail:** No reviewer-cited integrations in recent reviews.

### How do K-9 Mail and BlueMail compare on customer support?

K-9 Mail and BlueMail are at near-parity on Quality of Support, with K-9 Mail scoring 8.3 and BlueMail 7.9, a difference below the materiality threshold.

- **K-9 Mail:** Reviewers describe support as responsive and helpful, with several citing positive experiences resolving issues.
- **BlueMail:** Support experiences are mixed, with some reviewers noting helpful responses but others reporting unresponsiveness, especially for technical issues.

### Which is easier to implement, K-9 Mail or BlueMail?

BlueMail is easier to implement, with an Ease of Setup score of 8.7, while K-9 Mail does not have a published score for this dimension.

- **K-9 Mail:** Reviewers mention straightforward setup for multiple accounts but note occasional manual configuration steps.
- **BlueMail:** Reviewers consistently highlight easy setup and intuitive configuration, especially for managing multiple accounts across platforms.

Alternatives

**BlueMail Alternatives**

 ![Thunderbird](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_6ca5b57b63c45814e9ef66a64ca43c19/thunderbird.png "Thunderbird")

[
Thunderbird
](/products/thunderbird/reviews)

 ![Spike](https://images.g2crowd.com/uploads/product/hd_favicon/ad8d6b14c633bf13965f58ef40a77f0f/spike.svg "Spike")

[
Spike
](/products/spike/reviews)

 ![Mailbird](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_53eb6f8d708e7c322d572e28b89709cc/mailbird.png "Mailbird")

[
Mailbird
](/products/mailbird/reviews)

 ![Front](https://images.g2crowd.com/uploads/product/hd_favicon/1fe01c88159eb52ed7e93d98cdce08a5/front.svg "Front")

[
Front
](/products/front/reviews)

**K-9 Mail Alternatives**

 ![Microsoft Outlook](https://images.g2crowd.com/uploads/product/hd_favicon/5c440ee40ed0f9d1e1c0575dbdd12898/microsoft-outlook.png "Microsoft Outlook")

[
Outlook
](/products/microsoft-outlook/reviews)

 ![Thunderbird](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_6ca5b57b63c45814e9ef66a64ca43c19/thunderbird.png "Thunderbird")

[
Thunderbird
](/products/thunderbird/reviews)

 ![Spike](https://images.g2crowd.com/uploads/product/hd_favicon/ad8d6b14c633bf13965f58ef40a77f0f/spike.svg "Spike")

[
Spike
](/products/spike/reviews)

 ![Front](https://images.g2crowd.com/uploads/product/hd_favicon/1fe01c88159eb52ed7e93d98cdce08a5/front.svg "Front")

[
Front
](/products/front/reviews)

## BlueMail vs K-9 Mail

- Reviewers felt that BlueMail meets the needs of their business better than K-9 Mail.
- When comparing quality of ongoing product support, reviewers felt that K-9 Mail is the preferred option.
- For feature updates and roadmaps, our reviewers preferred the direction of BlueMail over K-9 Mail.