# Notion, Superhuman Mail vs Spike Comparison

| | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Star Rating** | 4.6 out of 5 | 4.7 out of 5 | 4.6 out of 5 | 
| **Total Reviews** | 11,989 | 1,255 | 262 | 
| **Largest Market Segment** | Small-Business (65.5% of reviews) | Small-Business (78.7% of reviews) | Small-Business (77.1% of reviews) | 
| **Entry Level Price** | Free | $30.00 1 seat Per Month | $5.00 1 User Per Month | 

---
## Top Pros & Cons

### Notion

Pros:
- Ease of Use (4772 reviews)
- Features (2750 reviews)

Cons:
- Learning Curve (1909 reviews)
- Limited Features (1033 reviews)

### Superhuman Mail

Pros:
- Time-saving (244 reviews)
- Ease of Use (224 reviews)

Cons:
- Learning Curve (73 reviews)
- Expensive (60 reviews)

### Spike

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

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

---
## Ratings Comparison
| Rating | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
  | **Meets Requirements** | 8.8 (8188 reviews) | 9.2 (1072 reviews) | 8.9 (166 reviews) | 
  | **Ease of Use** | 8.3 (8347 reviews) | 9.2 (1104 reviews) | 9.3 (170 reviews) | 
  | **Ease of Setup** | 8.3 (4269 reviews) | 9.3 (598 reviews) | 9.3 (53 reviews) | 
  | **Ease of Admin** | 8.4 (2363 reviews) | 9.2 (173 reviews) | 8.7 (36 reviews) | 
  | **Quality of Support** | 8.5 (5767 reviews) | 9.6 (924 reviews) | 9.0 (158 reviews) | 
  | **Has the product been a good partner in doing business?** | 8.8 (2217 reviews) | 9.4 (169 reviews) | 8.6 (34 reviews) | 
  | **Product Direction (% positive)** | 9.4 (8153 reviews) | 9.7 (1093 reviews) | 9.6 (156 reviews) | 

---
## Pricing

### Notion

#### Entry-Level Pricing

Plan: Free

Price: Free

Description: For individuals to organize personal projects and life

Key Features:
- Free for individual usage
- Basic forms
- Basic sites

[Browse all 4 editions](https://www.g2.com/products/notion/pricing)

#### Free Trial

Yes

### Superhuman Mail

#### Entry-Level Pricing

Plan: Starter

Price: $30.00 1 seat Per Month

Description: for individuals and teams that want to save time and get more done

Key Features:
- Email Productivity
- Superhuman AI
- Team Collaboration

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

#### Free Trial

No

### 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

### Project Management

| Product | Score | Reviews |
|---|---|---|
| **Notion** | 7.9/10 | 4725 |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Tasks

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Creation & Assignment** | 8.7 (3813 reviews) | Not enough data | Not enough data | 
| **Due Dates** | 8.3 (3723 reviews) | Not enough data | Not enough data | 
| **Task Prioritization** | 8.6 (3827 reviews) | Not enough data | Not enough data | 
| **To-Do Lists** | 8.9 (3969 reviews) | Not enough data | Not enough data | 
| **Dependencies** | 7.7 (3089 reviews) | Not enough data | Not enough data | 
| **Mass Updates** | 7.5 (2868 reviews) | Not enough data | Not enough data | 
| **Drag & Drop** | 8.4 (3643 reviews) | Not enough data | Not enough data | 
| **Recurring Tasks** | 7.6 (3218 reviews) | Not enough data | Not enough data | 

#### Projects

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Planning** | 8.8 (3600 reviews) | Not enough data | Not enough data | 
| **Project Map** | 8.4 (3162 reviews) | Not enough data | Not enough data | 
| **GANTT** | 7.4 (2539 reviews) | Not enough data | Not enough data | 
| **Calendar View** | 8.1 (3402 reviews) | Not enough data | Not enough data | 
| **Views** | 8.5 (3306 reviews) | Not enough data | Not enough data | 
| **Project Budgeting** | 7.4 (2585 reviews) | Not enough data | Not enough data | 
| **Issue Tracking** | 7.8 (2722 reviews) | Not enough data | Not enough data | 
| **Templates** | 8.3 (3473 reviews) | Not enough data | Not enough data | 
| **Critical Path** | 7.3 (2344 reviews) | Not enough data | Not enough data | 
| **Time & Expense** | 7.5 (2617 reviews) | Not enough data | Not enough data | 
| **Methodologies** | 7.8 (2519 reviews) | Not enough data | Not enough data | 

#### Resource Management

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Resource Definiton** | 7.9 (2772 reviews) | Not enough data | Not enough data | 
| **Capacity** | 7.8 (2832 reviews) | Not enough data | Not enough data | 
| **Scheduling** | 7.9 (3122 reviews) | Not enough data | Not enough data | 

#### Project Monitoring

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Baselining / KPIs** | 7.7 (2402 reviews) | Not enough data | Not enough data | 
| **Resource Allocation** | 7.6 (2449 reviews) | Not enough data | Not enough data | 
| **Dashboards** | 8.2 (3103 reviews) | Not enough data | Not enough data | 

#### Generative AI

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **AI Text Generation** | 7.8 (1370 reviews) | Not enough data | Not enough data | 
| **AI Text Summarization** | 8.0 (1362 reviews) | Not enough data | Not enough data | 

#### Agentic AI - Project Management

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | 6.9 (645 reviews) | Not enough data | Not enough data | 
| **Multi-step Planning** | 7.2 (645 reviews) | Not enough data | Not enough data | 
| **Cross-system Integration** | 7.1 (651 reviews) | Not enough data | Not enough data | 
| **Adaptive Learning** | 7.0 (634 reviews) | Not enough data | Not enough data | 
| **Natural Language Interaction** | 7.3 (636 reviews) | Not enough data | Not enough data | 
| **Proactive Assistance** | 6.8 (632 reviews) | Not enough data | Not enough data | 
| **Decision Making** | 7.0 (636 reviews) | Not enough data | Not enough data | 

### AI Chatbots

| Product | Score | Reviews |
|---|---|---|
| **Notion** | 7.8/10 | 316 |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Core Conversational Capabilities - AI Chatbots

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Controlled LLM Response Generation** | 8.2 (56 reviews) | Not enough data | Not enough data | 
| **Context Maintenance Within Sessions** | 8.2 (58 reviews) | Not enough data | Not enough data | 
| **Natural Language Understanding & Intent Inference** | 8.4 (59 reviews) | Not enough data | Not enough data | 

#### Data

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Reliability** | 8.0 (221 reviews) | Not enough data | Not enough data | 
| **Data Security** | 8.0 (215 reviews) | Not enough data | Not enough data | 

#### Interaction

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Complex Query Handling** | 7.6 (215 reviews) | Not enough data | Not enough data | 
| **Natural Conversation** | 8.0 (219 reviews) | Not enough data | Not enough data | 
| **Understanding** | 8.1 (221 reviews) | Not enough data | Not enough data | 
| **Context Management** | 8.0 (213 reviews) | Not enough data | Not enough data | 
| **Customizability** | 8.2 (219 reviews) | Not enough data | Not enough data | 

#### Task & Flow Management - AI Chatbots

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Scripted Dialogue & Decision Tree Support** | 7.9 (52 reviews) | Not enough data | Not enough data | 
| **Fallback Responses for Unknown Queries** | 7.8 (52 reviews) | Not enough data | Not enough data | 

#### Learning

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **User Interaction Learning** | 8.0 (211 reviews) | Not enough data | Not enough data | 
| **Error Learning** | 7.3 (206 reviews) | Not enough data | Not enough data | 

#### Deployment & Embedding - AI Chatbots

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **API Access for Business System Integration** | 7.3 (48 reviews) | Not enough data | Not enough data | 
| **Web Widget & SDK Embedding** | 7.2 (44 reviews) | Not enough data | Not enough data | 

#### Content Generation

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Creativity** | 7.9 (211 reviews) | Not enough data | Not enough data | 
| **Content Accuracy** | 7.9 (211 reviews) | Not enough data | Not enough data | 

#### Admin & Configuration - AI Chatbots

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **No-Code Conversation Design** | 7.4 (44 reviews) | Not enough data | Not enough data | 

#### System

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **API Flexibility** | 7.2 (202 reviews) | Not enough data | Not enough data | 
| **Update Frequency and Utility** | 7.8 (207 reviews) | Not enough data | Not enough data | 
| **Cross-Platform Compatibility	** | 7.8 (207 reviews) | Not enough data | Not enough data | 
| **Software Integration** | 7.9 (218 reviews) | Not enough data | Not enough data | 

#### Agentic AI - AI Chatbots

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | 7.6 (143 reviews) | Not enough data | Not enough data | 
| **Multi-step Planning** | 7.8 (144 reviews) | Not enough data | Not enough data | 
| **Cross-system Integration** | 7.6 (144 reviews) | Not enough data | Not enough data | 
| **Adaptive Learning** | 7.7 (145 reviews) | Not enough data | Not enough data | 
| **Natural Language Interaction** | 7.9 (144 reviews) | Not enough data | Not enough data | 
| **Proactive Assistance** | 7.4 (141 reviews) | Not enough data | Not enough data | 
| **Decision Making** | 7.5 (148 reviews) | Not enough data | Not enough data | 

#### Monitoring & Improvement - AI Chatbots

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Feedback-Driven Response Optimization** | 8.0 (44 reviews) | Not enough data | Not enough data | 

#### Reliability & Safety - AI Chatbots

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Guardrails & Content Controls** | 8.1 (45 reviews) | Not enough data | Not enough data | 

### Conversational Marketing

| Product | Score | Reviews |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | 8.8/10 | 28 |

#### Messenger

| Feature | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | 7.7/10 | 84 |

#### Business Instant Messaging

| Feature | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Text Summarization** | Not enough data | Not enough data | 7.7 (10 reviews) | 

#### AI - Business Instant Messaging

| Feature | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 |
|---|---|---|
| **Notion** | 8.0/10 | 4148 |
| **Superhuman Mail** | 7.5/10 | 102 |
| **Spike** | 9.1/10 | 9 |

#### Grammar

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Grammar Check** | 8.5 (3465 reviews) | 8.7 (84 reviews) | 9.4 (8 reviews) | 
| **Tone Check** | 8.3 (3244 reviews) | 8.3 (85 reviews) | 9.2 (8 reviews) | 
| **Sentence Formatting** | 8.6 (3415 reviews) | 8.5 (84 reviews) | 9.0 (7 reviews) | 

#### Formatting

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Plagiarism Check** | 7.1 (2183 reviews) | 6.0 (73 reviews) | 9.2 (6 reviews) | 
| **Style Editor** | 8.0 (2965 reviews) | 6.9 (73 reviews) | 9.7 (6 reviews) | 
| **Citation Finder** | 7.0 (2184 reviews) | 5.6 (68 reviews) | 9.0 (5 reviews) | 

#### Content 

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Idea Recommendation** | 8.3 (3057 reviews) | 6.4 (70 reviews) | 9.2 (6 reviews) | 
| **Content Generation** | 8.4 (3309 reviews) | 8.1 (71 reviews) | 8.9 (6 reviews) | 
| **Form Generation** | 7.8 (2445 reviews) | 6.0 (67 reviews) | 8.9 (6 reviews) | 

#### Product Type

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Standalone Application** | 8.4 (2683 reviews) | 8.8 (72 reviews) | 8.9 (6 reviews) | 
| **Plugin** | 7.4 (2049 reviews) | 5.5 (64 reviews) | 9.2 (6 reviews) | 

#### Generative AI

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **AI Text Generation** | 8.2 (1082 reviews) | 9.1 (71 reviews) | Not enough data | 
| **AI Text Summarization** | 8.5 (1082 reviews) | 9.1 (69 reviews) | Not enough data | 

### Shared Inbox

| Product | Score | Reviews |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | 9.7/10 | 6 |

#### Productivity Tools

| Feature | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | 8.1/10 | 606 |
| **Spike** | 9.0/10 | 85 |

#### Inbox Tools

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Unified Inbox** | Not enough data | Feature Not Available | 9.5 (72 reviews) | 
| **Filters** | Not enough data | 8.7 (565 reviews) | 9.1 (67 reviews) | 
| **Reminders** | Not enough data | 9.5 (581 reviews) | 9.2 (66 reviews) | 
| **Notifications** | Not enough data | 9.0 (565 reviews) | 9.2 (64 reviews) | 

#### Coordination Tools

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Calendar** | Not enough data | 7.4 (569 reviews) | 8.5 (64 reviews) | 
| **Contacts** | Not enough data | 7.2 (535 reviews) | 8.6 (65 reviews) | 
| **Task Management** | Not enough data | Feature Not Available | 8.6 (60 reviews) | 

#### Software Options

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Desktop Application** | Not enough data | 9.4 (567 reviews) | 9.3 (69 reviews) | 
| **Mobile Application** | Not enough data | 8.4 (563 reviews) | 9.2 (70 reviews) | 

#### Email Client - Agentic AI

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | 6.5 (44 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 6.5 (41 reviews) | Not enough data | 

### Knowledge Base

| Product | Score | Reviews |
|---|---|---|
| **Notion** | 7.8/10 | 5785 |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Knowledge Pages

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Templates** | 8.3 (3762 reviews) | Not enough data | Not enough data | 
| **In-Content Feedback** | 8.0 (3046 reviews) | Not enough data | Not enough data | 
| **Versioning and Version History** | 8.0 (3187 reviews) | Not enough data | Not enough data | 
| **Decision Trees** | Feature Not Available | Not enough data | Not enough data | 
| **Duplicate Detection** | 6.8 (2588 reviews) | Not enough data | Not enough data | 
| **Content Editor** | 8.3 (3463 reviews) | Not enough data | Not enough data | 

#### Knowledge Dissemination

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Page Analytics** | Feature Not Available | Not enough data | Not enough data | 
| **Permissions** | 8.0 (3172 reviews) | Not enough data | Not enough data | 
| **Knowledge Sharing** | 8.8 (3896 reviews) | Not enough data | Not enough data | 
| **Notifications** | 7.8 (3415 reviews) | Not enough data | Not enough data | 
| **Advanced Search** | 8.0 (3237 reviews) | Not enough data | Not enough data | 
| **Browser Extension** | 7.4 (2813 reviews) | Not enough data | Not enough data | 
| **Organization** | 8.6 (3863 reviews) | Not enough data | Not enough data | 
| **Other Integrations** | 7.7 (3065 reviews) | Not enough data | Not enough data | 
| **Knowledge Integrations** | 7.9 (2911 reviews) | Not enough data | Not enough data | 

#### Agentic AI - Knowledge Base

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Adaptive Learning** | 7.3 (941 reviews) | Not enough data | Not enough data | 
| **Natural Language Interaction** | 7.5 (1006 reviews) | Not enough data | Not enough data | 
| **Proactive Assistance** | 7.0 (936 reviews) | Not enough data | Not enough data | 

### Enterprise Search Software

| Product | Score | Reviews |
|---|---|---|
| **Notion** | 7.5/10 | 402 |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Compatibility

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Federated Search** | 7.8 (322 reviews) | Not enough data | Not enough data | 
| **File Types** | 7.8 (321 reviews) | Not enough data | Not enough data | 
| **Global Language Support** | 7.3 (308 reviews) | Not enough data | Not enough data | 

#### Agentic AI - Enterprise Search Software

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | 7.1 (173 reviews) | Not enough data | Not enough data | 
| **Multi-step Planning** | 7.1 (175 reviews) | Not enough data | Not enough data | 
| **Cross-system Integration** | 7.2 (171 reviews) | Not enough data | Not enough data | 
| **Adaptive Learning** | 7.1 (168 reviews) | Not enough data | Not enough data | 
| **Proactive Assistance** | 6.9 (166 reviews) | Not enough data | Not enough data | 
| **Decision Making** | 7.0 (169 reviews) | Not enough data | Not enough data | 

#### Search Queries

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Typo Tolerance** | 7.7 (320 reviews) | Not enough data | Not enough data | 
| **Faceted Search** | 7.7 (312 reviews) | Not enough data | Not enough data | 
| **Synonyms** | 7.4 (310 reviews) | Not enough data | Not enough data | 
| **Highlighting** | 7.7 (312 reviews) | Not enough data | Not enough data | 
| **Natural Language** | 8.1 (322 reviews) | Not enough data | Not enough data | 

#### AI powered search - Enterprise Search Software

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Generative RAG (Retrieval augmented generation)** | 7.5 (101 reviews) | Not enough data | Not enough data | 
| **Relevance Tuning** | 7.2 (99 reviews) | Not enough data | Not enough data | 
| **NLP & Semantic search** | 7.1 (99 reviews) | Not enough data | Not enough data | 

#### Functionality

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Personalization** | 8.0 (317 reviews) | Not enough data | Not enough data | 
| **Search Analytics** | 7.3 (316 reviews) | Not enough data | Not enough data | 
| **Integrations** | 7.6 (322 reviews) | Not enough data | Not enough data | 

#### Compatibility - Enterprise Search Software

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **File Types** | 7.7 (105 reviews) | Not enough data | Not enough data | 
| **Federated Search** | 7.5 (102 reviews) | Not enough data | Not enough data | 
| **Global Language Support** | 7.4 (98 reviews) | Not enough data | Not enough data | 

#### Functionality - Enterprise Search Software

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Personalization** | 7.7 (102 reviews) | Not enough data | Not enough data | 
| **Search Analytics** | 7.4 (99 reviews) | Not enough data | Not enough data | 
| **Integrations** | 7.3 (100 reviews) | Not enough data | Not enough data | 

#### Search Queries - Enterprise Search Software

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Highlighting** | 7.6 (94 reviews) | Not enough data | Not enough data | 
| **Faceted Search** | 7.5 (95 reviews) | Not enough data | Not enough data | 
| **Typo Tolerance** | 7.8 (98 reviews) | Not enough data | Not enough data | 
| **Synonyms** | 7.6 (95 reviews) | Not enough data | Not enough data | 

### Video Conferencing

| Product | Score | Reviews |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | 8.8/10 | 42 |

#### Collaboration Tools

| Feature | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | 

### AI Agents For Business Operations

| Product | Score | Reviews |
|---|---|---|
| **Notion** | 9.9/10 | 14 |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Responses

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Personalization** | Not enough data | Not enough data | Not enough data | 
| **Route To Human** | Not enough data | Not enough data | Not enough data | 
| **Natural Language Understanding (NLU)** | Not enough data | Not enough data | Not enough data | 

#### Automation - AI Agents

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Sales Follow-Up** | Not enough data | Not enough data | Not enough data | 
| **Customer Interaction Automation** | Not enough data | Not enough data | Not enough data | 
| **Lead Generation** | 10.0 (5 reviews) | Not enough data | Not enough data | 
| **Document Processing** | Not enough data | Not enough data | Not enough data | 
| **Feedback Collection** | Not enough data | Not enough data | Not enough data | 

#### Platform

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Conversation Editor** | Not enough data | Not enough data | Not enough data | 
| **Integration** | 10.0 (5 reviews) | Not enough data | Not enough data | 
| **Human-In-The-Loop** | Not enough data | Not enough data | Not enough data | 

#### Autonomy -  AI Agents

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Independent Decision Making** | Not enough data | Not enough data | Not enough data | 
| **Adaptive Responses** | Not enough data | Not enough data | Not enough data | 
| **Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Problem Solving** | Not enough data | Not enough data | Not enough data | 

#### Generative AI

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **AI Text Generation** | 9.7 (5 reviews) | Not enough data | Not enough data | 
| **AI Text Summarization** | 9.7 (6 reviews) | Not enough data | Not enough data | 

### Calendar

| Product | Score | Reviews |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | 9.0/10 | 33 |

#### Calendar View

| Feature | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 

### Email Management

| Product | Score | Reviews |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | 8.0/10 | 787 |
| **Spike** | 9.0/10 | 11 |

#### Sorting & Filtering

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Attachment Search** | Not enough data | 8.5 (671 reviews) | Not enough data | 
| **Tags** | Not enough data | 8.1 (656 reviews) | Not enough data | 
| **AI Sorting** | Not enough data | 8.3 (661 reviews) | Not enough data | 
| **Predefined Rules** | Not enough data | 8.4 (645 reviews) | Not enough data | 

#### Integrations

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Microsoft Outlook Integration** | Not enough data | 7.4 (491 reviews) | Not enough data | 
| **Gmail Integration** | Not enough data | 9.4 (685 reviews) | Not enough data | 
| **Apple Calendar Integration** | Not enough data | 7.3 (503 reviews) | Not enough data | 

#### Time Management

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Unified Inbox** | Not enough data | Feature Not Available | 9.0 (5 reviews) | 
| **Email Automation** | Not enough data | 8.7 (628 reviews) | Not enough data | 
| **Snooze** | Not enough data | 9.4 (695 reviews) | Not enough data | 

#### Generative AI

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | 8.1 (485 reviews) | Not enough data | 
| **AI Text-to-Speech** | Not enough data | 6.8 (391 reviews) | Not enough data | 
| **AI Text Summarization** | Not enough data | 8.1 (449 reviews) | Not enough data | 

#### Agentic AI - Email Management

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | 6.4 (85 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 6.4 (85 reviews) | Not enough data | 

### Email

| Product | Score | Reviews |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | 7.2/10 | 569 |
| **Spike** | 7.3/10 | 14 |

#### Generative AI

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | 8.0 (519 reviews) | 7.0 (10 reviews) | 
| **AI Text Summarization** | Not enough data | 8.2 (503 reviews) | 8.0 (11 reviews) | 
| **AI Text-to-Speech** | Not enough data | 6.6 (441 reviews) | 7.0 (9 reviews) | 
| **Autonomous Task Execution** | Not enough data | 6.2 (47 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 6.9 (47 reviews) | Not enough data | 
| **Proactive Assistance** | Not enough data | 7.0 (46 reviews) | Not enough data | 

### Email Encryption

| Product | Score | Reviews |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Encryption Techniques - Email Encryption

| Feature | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | Notion | Superhuman Mail | 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 | 

### AI Agent Builders

| Product | Score | Reviews |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Customization - AI Agent Builders

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Natural Language Configuration** | Not enough data | Not enough data | Not enough data | 
| **Tone Customization** | Not enough data | Not enough data | Not enough data | 
| **Security Guardrails** | Not enough data | Not enough data | Not enough data | 

#### Functionality - AI Agent Builders

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Omni-channel Support** | Not enough data | Not enough data | Not enough data | 
| **Agent Branding** | Not enough data | Not enough data | Not enough data | 
| **Proactive Response Capabilities** | Not enough data | Not enough data | Not enough data | 
| **Seamless Human Escalation** | Not enough data | Not enough data | Not enough data | 

#### Data and Analytics - AI Agent Builders

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Analytics & Reporting** | Not enough data | Not enough data | Not enough data | 
| **Contextual Awareness** | Not enough data | Not enough data | Not enough data | 
| **Data Privacy Compliance** | Not enough data | Not enough data | Not enough data | 

#### Integration - AI Agent Builders

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Workflow Automation** | Not enough data | Not enough data | Not enough data | 
| **API Usage** | Not enough data | Not enough data | Not enough data | 
| **Platform Interoperability** | Not enough data | Not enough data | Not enough data | 
| **CRM Data Integration** | Not enough data | Not enough data | Not enough data | 

### Note-Taking Software

| Product | Score | Reviews |
|---|---|---|
| **Notion** | 7.8/10 | 642 |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Agentic AI - Note-Taking Software

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Autonomous Task Execution** | 7.8 (487 reviews) | Not enough data | Not enough data | 

### Audio Conferencing

| Product | Score | Reviews |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Agentic AI - Audio Conferencing

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 

### Knowledge Management

| Product | Score | Reviews |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Knowledge Base

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Q & A** | Not enough data | Not enough data | Not enough data | 
| **Link Sharing** | Not enough data | Not enough data | Not enough data | 
| **Searchable** | Not enough data | Not enough data | Not enough data | 

#### Security

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Verification** | Not enough data | Not enough data | Not enough data | 
| **Role-Based Permission** | Not enough data | Not enough data | Not enough data | 
| **Public vs Private** | Not enough data | Not enough data | Not enough data | 

#### Content

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Trackable Analytics** | Not enough data | Not enough data | Not enough data | 
| **Import** | Not enough data | Not enough data | Not enough data | 
| **File Viewing** | Not enough data | Not enough data | Not enough data | 
| **Update Notifications** | Not enough data | Not enough data | Not enough data | 

#### Communication

| Feature | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Social Features** | Not enough data | Not enough data | Not enough data | 
| **Tagging ** | Not enough data | Not enough data | Not enough data | 
| **Upload ** | Not enough data | Not enough data | Not enough data | 
| **Comments** | Not enough data | Not enough data | Not enough data | 

### AI Agents

| Product | Score | Reviews |
|---|---|---|
| **Notion** | N/A | N/A |
| **Superhuman Mail** | N/A | N/A |
| **Spike** | N/A | N/A |

#### Agentic AI - AI Agents

| Feature | Notion | Superhuman Mail | 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 | 

---
## Categories
**Shared Categories (1):** [AI Writing Assistants](https://www.g2.com/categories/ai-writing-assistant)

**Unique to Notion (7):** [AI Chatbots Software](https://www.g2.com/categories/ai-chatbots), [Knowledge Base Software](https://www.g2.com/categories/knowledge-base-software), [Note-Taking Software](https://www.g2.com/categories/note-taking-software), [Enterprise Search Software](https://www.g2.com/categories/enterprise-search-software), [Project Management Software](https://www.g2.com/categories/project-management), [ AI Agent Builders Software](https://www.g2.com/categories/ai-agent-builders), [AI Agents For Business Operations](https://www.g2.com/categories/ai-agents-for-business-operations)

**Unique to Superhuman Mail (3):** [Email Management Software](https://www.g2.com/categories/email-management), [Email Client Software](https://www.g2.com/categories/email-client), [Email Software](https://www.g2.com/categories/email)

**Unique to Spike (11):** [Email Client Software](https://www.g2.com/categories/email-client), [Business Instant Messaging Software](https://www.g2.com/categories/business-instant-messaging), [Email Software](https://www.g2.com/categories/email), [Email Management Software](https://www.g2.com/categories/email-management), [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 | Notion | Superhuman Mail | Spike | 
|---|---|---|---|
| **Small-Business** | 65.5% | 78.7% | 77.1% | 
| **Mid-Market** | 28.7% | 17.9% | 13.9% | 
| **Enterprise** | 5.8% | 3.4% | 9.1% | 

### By Industry

#### Notion

- **Computer Software:** 13.7%
- **Information Technology and Services:** 11.5%
- **Marketing and Advertising:** 7.4%
- **Higher Education:** 6.2%
- **Financial Services:** 4.8%
- **Education Management:** 3.0%
- **Design:** 2.7%
- **Health, Wellness and Fitness:** 2.2%
- **Consulting:** 2.2%
- **Hospital & Health Care:** 1.6%
- **Other:** 44.8%

#### Superhuman Mail

- **Computer Software:** 18.7%
- **Information Technology and Services:** 10.8%
- **Marketing and Advertising:** 7.6%
- **Consulting:** 6.0%
- **Financial Services:** 4.5%
- **Venture Capital & Private Equity:** 3.5%
- **Higher Education:** 2.2%
- **Real Estate:** 2.1%
- **Accounting:** 1.8%
- **Education Management:** 1.7%
- **Other:** 41.3%

#### 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 Notion

- [ClickUp](https://www.g2.com/products/clickup/reviews) — 4.6/5 stars (12595 reviews)
- [Guru](https://www.g2.com/products/guru/reviews) — 4.7/5 stars (2318 reviews)
- [Asana](https://www.g2.com/products/asana/reviews) — 4.4/5 stars (13677 reviews)
- [Coda](https://www.g2.com/products/superhuman-coda/reviews) — 4.6/5 stars (492 reviews)
- [Slack](https://www.g2.com/products/slack/reviews) — 4.5/5 stars (39089 reviews)
- [monday Work Management](https://www.g2.com/products/monday-com/reviews) — 4.7/5 stars (15431 reviews)
- [Jira](https://www.g2.com/products/jira/reviews) — 4.3/5 stars (7842 reviews)
- [Airtable](https://www.g2.com/products/airtable/reviews) — 4.6/5 stars (3277 reviews)
- [Slite](https://www.g2.com/products/slite/reviews) — 4.6/5 stars (274 reviews)
- [Hive](https://www.g2.com/products/hive-hive-hive/reviews) — 4.6/5 stars (666 reviews)

### Alternatives to Superhuman Mail

- [Microsoft Outlook](https://www.g2.com/products/microsoft-outlook/reviews) — 4.5/5 stars (3490 reviews)
- [Front](https://www.g2.com/products/front/reviews) — 4.7/5 stars (2469 reviews)
- [Missive](https://www.g2.com/products/missive/reviews) — 4.7/5 stars (842 reviews)
- [SaneBox](https://www.g2.com/products/sanebox/reviews) — 4.9/5 stars (189 reviews)
- [Titan](https://www.g2.com/products/titan-titan/reviews) — 4.6/5 stars (561 reviews)
- [Zoho Mail](https://www.g2.com/products/zoho-mail/reviews) — 4.4/5 stars (717 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 (425 reviews)
- [Hiver](https://www.g2.com/products/hiver/reviews) — 4.6/5 stars (1283 reviews)
- [Google Workspace](https://www.g2.com/products/google-workspace/reviews) — 4.6/5 stars (48063 reviews)

### Alternatives to Spike

- [Google Workspace](https://www.g2.com/products/google-workspace/reviews) — 4.6/5 stars (48063 reviews)
- [Microsoft Outlook](https://www.g2.com/products/microsoft-outlook/reviews) — 4.5/5 stars (3490 reviews)
- [Front](https://www.g2.com/products/front/reviews) — 4.7/5 stars (2469 reviews)
- [Zoho Mail](https://www.g2.com/products/zoho-mail/reviews) — 4.4/5 stars (717 reviews)
- [Proton Mail For Business](https://www.g2.com/products/proton-mail-for-business/reviews) — 4.6/5 stars (425 reviews)
- [Thunderbird](https://www.g2.com/products/thunderbird/reviews) — 4.3/5 stars (339 reviews)
- [Slack](https://www.g2.com/products/slack/reviews) — 4.5/5 stars (39089 reviews)
- [Microsoft Teams](https://www.g2.com/products/microsoft-teams/reviews) — 4.4/5 stars (19076 reviews)
- [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56418 reviews)
- [Titan](https://www.g2.com/products/titan-titan/reviews) — 4.6/5 stars (561 reviews)

---
## Top Discussions

### Notion

- Title: [can i us Notion (basic) for multi-user use](https://www.g2.com/discussions/can-i-us-notion-basic-for-multi-user-use) — 3 comments, 1 upvote
  > **Top comment:** "Yes, just add them as guests"
- Title: [Best way to utilise Notion?](https://www.g2.com/discussions/best-way-to-utilise-notion) — 2 comments, 1 upvote
  > **Top comment:** "Use their databases blocks to have a collection of notes."
- Title: [Are there any tool we can integrate into notion for using AI](https://www.g2.com/discussions/are-there-any-tool-we-can-integrate-into-notion-for-using-ai) — 2 comments, 1 upvote
  > **Top comment:** "Notion AI: Built-in generative AI inside Notion for drafting content, summarizing pages, brainstorming, rewriting text, and autofilling databases. Works..."
- Title: [When would you start with the NPO/NGO discount plan?](https://www.g2.com/discussions/when-would-you-start-with-the-npo-ngo-discount-plan) — 2 comments, 1 upvote
  > **Top comment:** "I am a student , and notion is free for every students"
- Title: [How do I script Notion?](https://www.g2.com/discussions/how-do-i-script-notion) — 2 comments, 1 upvote
  > **Top comment:** "Use make.com"

### Superhuman Mail

- Title: [How is superhuman better than Gmail?](https://www.g2.com/discussions/how-is-superhuman-better-than-gmail) — 2 comments
  > **Top comment:** "At first, you won't see why it's worth the bother to learn SuperHuman.  Once you learn it, you will not want to go back.  In short, it's faster and easier to..."
- Title: [Any tips to protect my privacy when using Superhuman?](https://www.g2.com/discussions/32900-any-tips-to-protect-my-privacy-when-using-superhuman) — 2 comments, 1 upvote
  > **Top comment:** "Hey, Sarit!

Fortunately, Superhuman leverages Gmail's or Outlook's powerful privacy protection for your accounts 🙌

I'm curious to learn more if there..."
- Title: [Does superhuman read my emails?](https://www.g2.com/discussions/does-superhuman-read-my-emails) — 1 comment *(includes official response)*
  > **Top comment:** "Hi there, Pia from Superhuman here 👋🏻  We do not read your emails unless you explicitly give us consent when submitting feedback or sharing conversation..."
- Title: [Does superhuman work with Microsoft?](https://www.g2.com/discussions/does-superhuman-work-with-microsoft) — 1 comment
  > **Top comment:** "Hi there, Alana from Superhuman here 👋 Happy to share that we launched Superhuman for Outlook earlier this year!..."
- Title: [can we add a windows app?](https://www.g2.com/discussions/can-we-add-a-windows-app) — 1 comment, 1 upvote
  > **Top comment:** "Hey, Mony! 

You can download our Windows app from superhuman.com/download

Does that help? 🙂"

### 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..."

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