# Mailbird, Thunderbird vs Spike Comparison

| | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Star Rating** | 3.6 out of 5 | 4.3 out of 5 | 4.6 out of 5 | 
| **Total Reviews** | 101 | 339 | 262 | 
| **Largest Market Segment** | Small-Business (80.2% of reviews) | Small-Business (65.1% of reviews) | Small-Business (77.1% of reviews) | 
| **Entry Level Price** | $5.75 Per Month | No pricing available | $5.00 1 User Per Month | 

---
## Top Pros & Cons

### Mailbird

Pros:
- Ease of Use (4 reviews)
- Setup Ease (3 reviews)

Cons:
- Bug Issues (3 reviews)
- Lack of Integration (3 reviews)

### Thunderbird

Pros:
- Functionality Features (4 reviews)
- Ease of Use (3 reviews)

Cons:
- Difficult Setup (2 reviews)
- Missing Features (2 reviews)

### Spike

Pros:
- Ease of Use (46 reviews)
- Email Management (35 reviews)

Cons:
- Missing Features (19 reviews)
- Limited Features (12 reviews)

---
## Ratings Comparison
| Rating | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
  | **Meets Requirements** | 7.2 (79 reviews) | 8.7 (304 reviews) | 8.9 (166 reviews) | 
  | **Ease of Use** | 7.7 (79 reviews) | 8.7 (305 reviews) | 9.3 (170 reviews) | 
  | **Ease of Setup** | 8.1 (22 reviews) | 8.8 (75 reviews) | 9.3 (53 reviews) | 
  | **Ease of Admin** | 9.3 (14 reviews) | 8.4 (58 reviews) | 8.7 (36 reviews) | 
  | **Quality of Support** | 6.9 (64 reviews) | 7.9 (222 reviews) | 9.0 (158 reviews) | 
  | **Has the product been a good partner in doing business?** | 7.9 (11 reviews) | 8.1 (41 reviews) | 8.6 (34 reviews) | 
  | **Product Direction (% positive)** | 6.9 (78 reviews) | 7.6 (302 reviews) | 9.6 (156 reviews) | 

---
## Pricing

### Mailbird

#### Entry-Level Pricing

Plan: Mailbird Premium Yearly

Price: $5.75 Per Month

Description: A yearly subscription that gives you access to both Mailbird for Windows and Mailbird for Mac on up to three devices. This plan includes all future Mailbird updates—both minor and major—because Lifetime Updates are built in by default.

Key Features:
- Access to Mailbird for Windows and Mailbird for Mac
- Lifetime Updates included by default
- Manage unlimited email accounts

[Browse all 3 editions](https://www.g2.com/products/mailbird/pricing)

#### Free Trial

Yes

### Thunderbird

#### Entry-Level Pricing

No pricing available

#### Free Trial

No information available

### Spike

#### Entry-Level Pricing

Plan: Pro

Price: $5.00 1 User Per Month

Description: Use Spike's email app with up to 3 email accounts with unified inbox and unlimited search history

Key Features:
- Conversational Email
- Spike AI
- 5 GB storage

[Browse all 2 editions](https://www.g2.com/products/spike/pricing)

#### Free Trial

Yes

---
## Features Comparison By Category

### Conversational Marketing

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | N/A | N/A |
| **Thunderbird** | N/A | N/A |
| **Spike** | 8.8/10 | 28 |

#### Messenger

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Sequencing** | Not enough data | Not enough data | 9.1 (25 reviews) ✓ Verified | 
| **AI** | Not enough data | Not enough data | 9.3 (23 reviews) ✓ Verified | 
| **Live Chat** | Not enough data | Not enough data | 8.9 (24 reviews) ✓ Verified | 
| **Customization Interface** | Not enough data | Not enough data | 9.1 (25 reviews) ✓ Verified | 

#### Channels

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Social Media** | Not enough data | Not enough data | 8.7 (21 reviews) ✓ Verified | 
| **Website** | Not enough data | Not enough data | 8.4 (20 reviews) ✓ Verified | 
| **Text Message (SMS)** | Not enough data | Not enough data | 8.6 (19 reviews) ✓ Verified | 
| **Voice Assistants** | Not enough data | Not enough data | 8.6 (20 reviews) ✓ Verified | 
| **Other** | Not enough data | Not enough data | 8.2 (20 reviews) ✓ Verified | 

#### Customers

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Targeting** | Not enough data | Not enough data | 8.8 (20 reviews) ✓ Verified | 
| **Profiles** | Not enough data | Not enough data | 8.6 (22 reviews) | 
| **Analytics** | Not enough data | Not enough data | Feature Not Available | 
| **Lead Gathering** | Not enough data | Not enough data | Feature Not Available | 
| **Sales Conversion** | Not enough data | Not enough data | Feature Not Available | 

#### Agentic AI - Conversational Marketing

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Multi-step Planning** | Not enough data | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 
| **Natural Language Interaction** | Not enough data | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 

### Business Instant Messaging

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | N/A | N/A |
| **Thunderbird** | N/A | N/A |
| **Spike** | 7.7/10 | 84 |

#### Business Instant Messaging

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **File Sharing** | Not enough data | Not enough data | 8.9 (64 reviews) | 
| **Notifications** | Not enough data | Not enough data | 9.2 (69 reviews) | 
| **Search** | Not enough data | Not enough data | 8.7 (70 reviews) | 

#### Business Instant Messaging 

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Audio Conferencing** | Not enough data | Not enough data | 8.9 (56 reviews) | 
| **Video Conferencing** | Not enough data | Not enough data | 8.4 (54 reviews) | 

#### Business Instant Messaging

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Mobile Application** | Not enough data | Not enough data | 9.2 (68 reviews) | 
| **Web Application** | Not enough data | Not enough data | 9.2 (63 reviews) | 
| **Integrations** | Not enough data | Not enough data | Feature Not Available | 

#### Generative AI - Business Instant Messaging

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Text Summarization** | Not enough data | Not enough data | 7.7 (10 reviews) | 

#### AI - Business Instant Messaging

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **AI Powered Search** | Not enough data | Not enough data | 6.9 (9 reviews) | 
| **Smart Notifications** | Not enough data | Not enough data | 7.2 (10 reviews) | 
| **AI Powered Language Translation** | Not enough data | Not enough data | 6.5 (9 reviews) | 
| **Content Generation** | Not enough data | Not enough data | 6.1 (9 reviews) | 

#### Agentic AI - Business Instant Messaging

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Cross-system Integration** | Not enough data | Not enough data | 5.0 (5 reviews) | 
| **Natural Language Interaction** | Not enough data | Not enough data | 5.7 (5 reviews) | 

### AI Writing Assistant

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | N/A | N/A |
| **Thunderbird** | N/A | N/A |
| **Spike** | 9.1/10 | 9 |

#### Grammar

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Grammar Check** | Not enough data | Not enough data | 9.4 (8 reviews) | 
| **Tone Check** | Not enough data | Not enough data | 9.2 (8 reviews) | 
| **Sentence Formatting** | Not enough data | Not enough data | 9.0 (7 reviews) | 

#### Formatting

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Plagiarism Check** | Not enough data | Not enough data | 9.2 (6 reviews) | 
| **Style Editor** | Not enough data | Not enough data | 9.7 (6 reviews) | 
| **Citation Finder** | Not enough data | Not enough data | 9.0 (5 reviews) | 

#### Content 

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Idea Recommendation** | Not enough data | Not enough data | 9.2 (6 reviews) | 
| **Content Generation** | Not enough data | Not enough data | 8.9 (6 reviews) | 
| **Form Generation** | Not enough data | Not enough data | 8.9 (6 reviews) | 

#### Product Type

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Standalone Application** | Not enough data | Not enough data | 8.9 (6 reviews) | 
| **Plugin** | Not enough data | Not enough data | 9.2 (6 reviews) | 

#### Generative AI

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | Not enough data | 
| **AI Text Summarization** | Not enough data | Not enough data | Not enough data | 

### Shared Inbox

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | N/A | N/A |
| **Thunderbird** | N/A | N/A |
| **Spike** | 9.7/10 | 6 |

#### Productivity Tools

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Notes** | Not enough data | Not enough data | 9.7 (6 reviews) | 
| **Internal Discussion** | Not enough data | Not enough data | 9.7 (5 reviews) | 
| **Assignments and Tasks** | Not enough data | Not enough data | Not enough data | 
| **Workflows** | Not enough data | Not enough data | Not enough data | 
| **Templates** | Not enough data | Not enough data | Not enough data | 
| **Integrations** | Not enough data | Not enough data | Feature Not Available | 
| **Tagging System** | Not enough data | Not enough data | Not enough data | 

#### Analytics

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Trends** | Not enough data | Not enough data | Not enough data | 
| **Performance Tracking** | Not enough data | Not enough data | Not enough data | 
| **Email Tracking** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - Shared Inbox

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 

### Email Client

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | 7.7/10 | 37 |
| **Thunderbird** | 8.5/10 | 123 |
| **Spike** | 9.0/10 | 85 |

#### Inbox Tools

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Unified Inbox** | 8.6 (33 reviews) | 8.9 (104 reviews) | 9.5 (72 reviews) | 
| **Filters** | 7.4 (33 reviews) | 8.9 (109 reviews) | 9.1 (67 reviews) | 
| **Reminders** | 7.6 (30 reviews) | 8.5 (96 reviews) | 9.2 (66 reviews) | 
| **Notifications** | 7.8 (31 reviews) | 8.7 (104 reviews) | 9.2 (64 reviews) | 

#### Coordination Tools

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Calendar** | 7.7 (30 reviews) | 8.4 (93 reviews) | 8.5 (64 reviews) | 
| **Contacts** | 7.6 (33 reviews) | 8.6 (101 reviews) | 8.6 (65 reviews) | 
| **Task Management** | 7.1 (26 reviews) | 8.4 (89 reviews) | 8.6 (60 reviews) | 

#### Software Options

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Desktop Application** | 7.4 (35 reviews) | 9.2 (111 reviews) | 9.3 (69 reviews) | 
| **Mobile Application** | Feature Not Available | 7.6 (64 reviews) | 9.2 (70 reviews) | 

#### Email Client - Agentic AI

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | 8.0 (5 reviews) | Not enough data | 

### Video Conferencing

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | N/A | N/A |
| **Thunderbird** | N/A | N/A |
| **Spike** | 8.8/10 | 42 |

#### Collaboration Tools

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Screen Sharing** | Not enough data | Not enough data | 9.1 (25 reviews) ✓ Verified | 
| **Presentations** | Not enough data | Not enough data | 8.6 (18 reviews) | 
| **Whiteboarding** | Not enough data | Not enough data | 8.7 (17 reviews) | 
| **Live Chat** | Not enough data | Not enough data | 8.8 (27 reviews) ✓ Verified | 
| **Hand Raising** | Not enough data | Not enough data | Feature Not Available | 

#### Meeting Coordination

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Scheduling** | Not enough data | Not enough data | 8.2 (32 reviews) ✓ Verified | 
| **Recording** | Not enough data | Not enough data | Feature Not Available | 
| **Participant Permissions** | Not enough data | Not enough data | 9.1 (27 reviews) ✓ Verified | 
| **One-Click Join** | Not enough data | Not enough data | 8.9 (24 reviews) ✓ Verified | 

#### Software Type

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Mobile** | Not enough data | Not enough data | 9.0 (32 reviews) ✓ Verified | 
| **Browser Application** | Not enough data | Not enough data | 9.0 (27 reviews) ✓ Verified | 
| **Desktop Application** | Not enough data | Not enough data | 8.9 (26 reviews) ✓ Verified | 

#### Agentic AI - Video Conferencing

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 

### Calendar

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | N/A | N/A |
| **Thunderbird** | N/A | N/A |
| **Spike** | 9.0/10 | 33 |

#### Calendar View

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Multi-Calendar View** | Not enough data | Not enough data | 9.1 (25 reviews) | 
| **Customizable Viewing** | Not enough data | Not enough data | 8.8 (27 reviews) | 

#### Shared Calendar

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Calendar Collaboration** | Not enough data | Not enough data | Feature Not Available | 
| **Multiple Calendar Management** | Not enough data | Not enough data | Feature Not Available | 

#### Accessibility

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Screen Reader Compatibility** | Not enough data | Not enough data | Feature Not Available | 
| **Keyboard Shortcuts** | Not enough data | Not enough data | 8.8 (7 reviews) | 

#### Integration

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Sync Multiple Calendars** | Not enough data | Not enough data | 9.3 (26 reviews) | 
| **Import Events** | Not enough data | Not enough data | 9.1 (24 reviews) | 
| **Software Integrations** | Not enough data | Not enough data | Feature Not Available | 

#### Notifications

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Customized Calendar Notifications** | Not enough data | Not enough data | Feature Not Available | 
| **Location-Based Alerts** | Not enough data | Not enough data | Feature Not Available | 

#### Generative AI

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **AI Text-to-Image** | Not enough data | Not enough data | Not enough data | 
| **AI Text-to-Speech** | Not enough data | Not enough data | Not enough data | 
| **AI Image-to-Text** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - Calendar

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 

### Email Management

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | 5.8/10 | 13 |
| **Thunderbird** | 8.9/10 | 9 |
| **Spike** | 9.0/10 | 11 |

#### Sorting & Filtering

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Attachment Search** | 5.5 (13 reviews) | 9.2 (6 reviews) | Not enough data | 
| **Tags** | Feature Not Available | 10.0 (7 reviews) | Not enough data | 
| **AI Sorting** | Feature Not Available | 8.0 (5 reviews) | Not enough data | 
| **Predefined Rules** | 4.7 (11 reviews) | 9.2 (6 reviews) | Not enough data | 

#### Integrations

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Microsoft Outlook Integration** | Feature Not Available | 8.3 (6 reviews) | Not enough data | 
| **Gmail Integration** | Feature Not Available | 9.0 (7 reviews) | Not enough data | 
| **Apple Calendar Integration** | Feature Not Available | 8.1 (6 reviews) | Not enough data | 

#### Time Management

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Unified Inbox** | 6.9 (12 reviews) | 9.4 (6 reviews) | 9.0 (5 reviews) | 
| **Email Automation** | Feature Not Available | 8.8 (7 reviews) | Not enough data | 
| **Snooze** | 6.1 (11 reviews) | 9.0 (5 reviews) | Not enough data | 

#### Generative AI

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **AI Text Generation** | Feature Not Available | Not enough data | Not enough data | 
| **AI Text-to-Speech** | Feature Not Available | Not enough data | Not enough data | 
| **AI Text Summarization** | Feature Not Available | Not enough data | Not enough data | 

#### Agentic AI - Email Management

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 

### Email

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | N/A | N/A |
| **Thunderbird** | N/A | N/A |
| **Spike** | 7.3/10 | 14 |

#### Generative AI

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | 7.0 (10 reviews) | 
| **AI Text Summarization** | Not enough data | Not enough data | 8.0 (11 reviews) | 
| **AI Text-to-Speech** | Not enough data | Not enough data | 7.0 (9 reviews) | 
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 

### Email Encryption

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | N/A | N/A |
| **Thunderbird** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Encryption Techniques - Email Encryption

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Encryption Algorithms** | Not enough data | Not enough data | Not enough data | 
| **Transport Encryption** | Not enough data | Not enough data | Not enough data | 
| **End-to-End Encryption** | Not enough data | Not enough data | Not enough data | 

#### Authentication, Verification, and Access Controls - Email Encryption

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Revocation Mechanisms** | Not enough data | Not enough data | Not enough data | 
| **Access Controls** | Not enough data | Not enough data | Not enough data | 
| **Digital Signatures** | Not enough data | Not enough data | Not enough data | 
| **Certificate Authorities** | Not enough data | Not enough data | Not enough data | 

#### Security Enhancements and Auditing - Email Encryption

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Malware Scanning** | Not enough data | Not enough data | Not enough data | 
| **Reporting** | Not enough data | Not enough data | Not enough data | 
| **Audit Trails** | Not enough data | Not enough data | Not enough data | 
| **Data Loss Prevention (DLP)** | Not enough data | Not enough data | Not enough data | 

#### Integration, Compatibility, and Usability - Email Encryption

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **User-Friendly Interfaces** | Not enough data | Not enough data | Not enough data | 
| **APIs and SDKs** | Not enough data | Not enough data | Not enough data | 
| **Email Client Integration** | Not enough data | Not enough data | Not enough data | 
| **Automation** | Not enough data | Not enough data | Not enough data | 

### Note-Taking Software

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | N/A | N/A |
| **Thunderbird** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Agentic AI - Note-Taking Software

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 

### Audio Conferencing

| Product | Score | Reviews |
|---|---|---|
| **Mailbird** | N/A | N/A |
| **Thunderbird** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Agentic AI - Audio Conferencing

| Feature | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 

---
## Categories
**Shared Categories (2):** [Email Client Software](https://www.g2.com/categories/email-client), [Email Management Software](https://www.g2.com/categories/email-management)



**Unique to Spike (10):** [Business Instant Messaging Software](https://www.g2.com/categories/business-instant-messaging), [Email Software](https://www.g2.com/categories/email), [AI Writing Assistants](https://www.g2.com/categories/ai-writing-assistant), [Shared Inbox Software](https://www.g2.com/categories/shared-inbox), [Email Encryption Software](https://www.g2.com/categories/email-encryption), [Conversational Marketing Software](https://www.g2.com/categories/conversational-marketing), [Note-Taking Software](https://www.g2.com/categories/note-taking-software), [Audio Conferencing Software](https://www.g2.com/categories/audio-conferencing), [Calendar Software](https://www.g2.com/categories/calendar-software), [Video Conferencing Software](https://www.g2.com/categories/video-conferencing)


---
## Reviewer Demographics

### By Company Size

| Segment | Mailbird | Thunderbird | Spike | 
|---|---|---|---|
| **Small-Business** | 80.2% | 65.1% | 77.1% | 
| **Mid-Market** | 16.7% | 24.4% | 13.9% | 
| **Enterprise** | 3.1% | 10.5% | 9.1% | 

### By Industry

#### Mailbird

- **Information Technology and Services:** 20.8%
- **Marketing and Advertising:** 11.5%
- **Computer Software:** 9.4%
- **Entertainment:** 4.2%
- **Computer & Network Security:** 4.2%
- **Graphic Design:** 3.1%
- **Retail:** 3.1%
- **Legal Services:** 2.1%
- **Commercial Real Estate:** 2.1%
- **Internet:** 2.1%
- **Other:** 37.5%

#### Thunderbird

- **Information Technology and Services:** 13.0%
- **Computer Software:** 11.7%
- **Internet:** 6.6%
- **Marketing and Advertising:** 5.1%
- **Telecommunications:** 3.3%
- **Higher Education:** 2.7%
- **Consumer Goods:** 2.4%
- **Design:** 2.4%
- **Education Management:** 2.1%
- **Renewables & Environment:** 2.1%
- **Other:** 48.5%

#### Spike

- **Information Technology and Services:** 12.2%
- **Marketing and Advertising:** 9.1%
- **Computer Software:** 9.1%
- **Higher Education:** 5.2%
- **Financial Services:** 3.0%
- **Design:** 2.6%
- **Entertainment:** 2.6%
- **Internet:** 2.6%
- **Consumer Services:** 2.2%
- **Education Management:** 2.2%
- **Other:** 49.1%

---
## Alternatives

### Alternatives to Mailbird

- [Front](https://www.g2.com/products/front/reviews) — 4.7/5 stars (2466 reviews)
- [BlueMail](https://www.g2.com/products/bluemail/reviews) — 4.3/5 stars (53 reviews)
- [Microsoft Outlook](https://www.g2.com/products/microsoft-outlook/reviews) — 4.5/5 stars (3472 reviews)
- [Shift](https://www.g2.com/products/redbrick-shift/reviews) — 4.5/5 stars (264 reviews)
- [eM Client](https://www.g2.com/products/em-client/reviews) — 4.0/5 stars (61 reviews)
- [Mailspring](https://www.g2.com/products/mailspring/reviews) — 3.8/5 stars (18 reviews)
- [Superhuman Mail](https://www.g2.com/products/superhuman-mail/reviews) — 4.7/5 stars (1245 reviews)
- [Canary Mail](https://www.g2.com/products/canary-mail/reviews) — 4.5/5 stars (53 reviews)
- [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56388 reviews)
- [Hiver](https://www.g2.com/products/hiver/reviews) — 4.6/5 stars (1283 reviews)

### Alternatives to Thunderbird

- [Front](https://www.g2.com/products/front/reviews) — 4.7/5 stars (2466 reviews)
- [BlueMail](https://www.g2.com/products/bluemail/reviews) — 4.3/5 stars (53 reviews)
- [Microsoft Outlook](https://www.g2.com/products/microsoft-outlook/reviews) — 4.5/5 stars (3472 reviews)
- [Shift](https://www.g2.com/products/redbrick-shift/reviews) — 4.5/5 stars (264 reviews)
- [eM Client](https://www.g2.com/products/em-client/reviews) — 4.0/5 stars (61 reviews)
- [Zimbra Desktop](https://www.g2.com/products/zimbra-desktop/reviews) — 4.4/5 stars (22 reviews)
- [Mailspring](https://www.g2.com/products/mailspring/reviews) — 3.8/5 stars (18 reviews)
- [K-9 Mail](https://www.g2.com/products/k-9-mail/reviews) — 4.5/5 stars (13 reviews)
- [Superhuman Mail](https://www.g2.com/products/superhuman-mail/reviews) — 4.7/5 stars (1245 reviews)
- [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56388 reviews)

### Alternatives to Spike

- [Google Workspace](https://www.g2.com/products/google-workspace/reviews) — 4.6/5 stars (48003 reviews)
- [Microsoft Outlook](https://www.g2.com/products/microsoft-outlook/reviews) — 4.5/5 stars (3472 reviews)
- [Front](https://www.g2.com/products/front/reviews) — 4.7/5 stars (2466 reviews)
- [Zoho Mail](https://www.g2.com/products/zoho-mail/reviews) — 4.4/5 stars (714 reviews)
- [Slack](https://www.g2.com/products/slack/reviews) — 4.5/5 stars (39041 reviews)
- [Superhuman Mail](https://www.g2.com/products/superhuman-mail/reviews) — 4.7/5 stars (1245 reviews)
- [Proton Mail For Business](https://www.g2.com/products/proton-mail-for-business/reviews) — 4.6/5 stars (314 reviews)
- [Microsoft Teams](https://www.g2.com/products/microsoft-teams/reviews) — 4.4/5 stars (18988 reviews)
- [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56388 reviews)
- [Titan](https://www.g2.com/products/titan-titan/reviews) — 4.6/5 stars (561 reviews)

---
## Top Discussions

### Mailbird

- Title: [Is Mailbird really free?](https://www.g2.com/discussions/is-mailbird-really-free) — 2 comments
  > **Top comment:** "No! Mailbird isn't free, but offers a 14-day free trial. Also, keep in mind that the company is developing another email client - it is called Mailbird Next...."
- Title: [Is Mailbird any good?](https://www.g2.com/discussions/is-mailbird-any-good) — 1 comment
  > **Top comment:** "Bruh it's hella chill."
- Title: [Why do my emails get stuck in the outbox?](https://www.g2.com/discussions/why-do-my-emails-get-stuck-in-the-outbox) — 1 comment
  > **Top comment:** "Mailbird support is horrible - simply right click on the mailbird icon and make sure to select "exit mailbird". Don't just click the X on top to close the..."
- Title: [I need a JOB!!!! let me work with you all.](https://www.g2.com/discussions/49856-i-need-a-job-let-me-work-with-you-all) — 1 comment
  > **Top comment:** "Joseph,
I have periodic problems with Thunderbird.    I have only two personal email accounts to manage.   Is Mailbird my best option for Win 10 or 11?   If..."

### Thunderbird

- Title: [Has anyone managed to use the copy and paste function from excell?](https://www.g2.com/discussions/12306-has-anyone-managed-to-use-the-copy-and-paste-function-from-excell) — 2 comments, 1 upvote
  > **Top comment:** "Strange -- when I do it, the columns and rows are maintained (though some of the formatting is not kept). 

What version are you using? I'm still using..."
- Title: [What is the use of Thunderbird software?](https://www.g2.com/discussions/what-is-the-use-of-thunderbird-software) — 1 comment, 1 upvote
  > **Top comment:** "It allows you to manage multiple emails in a single window without back and forth switching. That's the main use I found. Besides that, it also has a good..."
- Title: [Has anyone managed to use the copy and paste function from excell?](https://www.g2.com/discussions/30110-has-anyone-managed-to-use-the-copy-and-paste-function-from-excell) — 1 comment
  > **Top comment:** "Thunderbird does not recognize Excel’s formatting the way Outlook can. But, it can recognize formatting from Word. Copy paste from Excel to Word, then from..."

### Spike

- Title: [What is a spike task?](https://www.g2.com/discussions/what-is-a-spike-task) — 2 comments
  > **Top comment:** "A Spike task is an captured action item, visible in your inbox until you either action it , delete it, or 'reschedule' it to a future date ('snoozing', in..."
- Title: [Spike - Syncing Mailbox Settings between devices - Feature Request](https://www.g2.com/discussions/spike-syncing-mailbox-settings-between-devices-feature-request) — 2 comments, 1 upvote *(includes official response)*
  > **Top comment:** "Hey Serge, 

Hi Serge,
We currently don't offer a single login because common solutions have  security disadvantages, and above all, Spike prioritizes..."
- Title: [What is a spike in Devops?](https://www.g2.com/discussions/what-is-a-spike-in-devops) — 2 comments, 1 upvote
  > **Top comment:** "A spike is a user story for which the team cannot estimate the effort needed. In such a case, it is better to run time-boxed research, exploration to learn..."
- Title: [Full HTML Signature Support](https://www.g2.com/discussions/full-html-signature-support) — 2 comments, 1 upvote
  > **Top comment:** "I guess its safe to say i wasn't the only one that suffered from the loss of bitcoins been stolen from worldofcryptomining account, over 18btc was stolen..."
- Title: [Does it allow customization?](https://www.g2.com/discussions/50564-does-it-allow-customization) — 2 comments, 1 upvote
  > **Top comment:** "Hi Tyree! Certain things can be customized. For example - on mobile you can customize your swipes and quick actions. You can also customize your..."

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**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/mailbird-vs-thunderbird-vs-spike)