# Mimecast Advanced Email Security vs Zscaler Internet Access Comparison

| | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Star Rating** | 4.4 out of 5 | 4.4 out of 5 | 
| **Total Reviews** | 348 | 276 | 
| **Largest Market Segment** | Mid-Market (67.8% of reviews) | Enterprise (55.3% of reviews) | 
| **Entry Level Price** | No pricing available | No pricing available | 

---
## Top Pros & Cons

### Mimecast Advanced Email Security

Pros:
- Email Security (40 reviews)
- Ease of Use (36 reviews)

Cons:
- Complexity (17 reviews)
- Email Filtering Issues (16 reviews)

### Zscaler Internet Access

Pros:
- Security (47 reviews)
- Internet Security (46 reviews)

Cons:
- Slow Performance (27 reviews)
- Complex Implementation (24 reviews)

---
## Ratings Comparison
| Rating | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
  | **Meets Requirements** | 8.9 (272 reviews) | 8.8 (197 reviews) | 
  | **Ease of Use** | 8.0 (278 reviews) | 8.8 (204 reviews) | 
  | **Ease of Setup** | 7.9 (214 reviews) | 8.6 (154 reviews) | 
  | **Ease of Admin** | 7.9 (213 reviews) | 8.8 (64 reviews) | 
  | **Quality of Support** | 8.3 (262 reviews) | 8.6 (184 reviews) | 
  | **Has the product been a good partner in doing business?** | 8.7 (212 reviews) | 8.9 (62 reviews) | 
  | **Product Direction (% positive)** | 8.9 (266 reviews) | 9.3 (183 reviews) | 

---
## Pricing

### Mimecast Advanced Email Security

#### Entry-Level Pricing

No pricing available

#### Free Trial

Yes

### Zscaler Internet Access

#### Entry-Level Pricing

No pricing available

#### Free Trial

No information available

---
## Features Comparison By Category

### Artificial Intelligence

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | N/A | N/A |

#### Additional Functionality

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Tagging** | Not enough data | Not enough data | 
| **Natural Language Processing** | Not enough data | Not enough data | 
| **Data Extraction** | Not enough data | Not enough data | 
| **Multi-Language** | Not enough data | Not enough data | 
| **Predictive Analytics** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **Speech Recognition** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **Data Storage Management** | Not enough data | Not enough data | 
| **Virtual Personal Assistant (VPA)** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Customer Segmentation** | Not enough data | Not enough data | 
| **Collaboration Tools** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **For eCommerce** | Not enough data | Not enough data | 
| **Role-Based Permissions** | Not enough data | Not enough data | 
| **Customizable Branding** | Not enough data | Not enough data | 
| **Search/Filter** | Not enough data | Not enough data | 
| **Monitoring** | Not enough data | Not enough data | 
| **Document Management** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Data Visualization** | Not enough data | Not enough data | 
| **Trend Analysis** | Not enough data | Not enough data | 
| **Machine Learning** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Alerts/Escalation** | Not enough data | Not enough data | 
| **Performance Metrics** | Not enough data | Not enough data | 
| **Real-Time Data** | Not enough data | Not enough data | 
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **Mobile App** | Not enough data | Not enough data | 
| **Multiple Data Sources** | Not enough data | Not enough data | 
| **For Sales Teams/Organizations** | Not enough data | Not enough data | 
| **Sentiment Analysis** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Chatbot** | Not enough data | Not enough data | 
| **Workflow Automation** | Not enough data | Not enough data | 

### Email Security

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | N/A | N/A |

#### Additional Functionality

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Phishing Protection** | Not enough data | Not enough data | 
| **Threat Response** | Not enough data | Not enough data | 
| **Domain Check** | Not enough data | Not enough data | 
| **Security Auditing** | Not enough data | Not enough data | 
| **AI/Machine Learning** | Not enough data | Not enough data | 
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **Anomaly/Malware Detection** | Not enough data | Not enough data | 
| **SURLB/URIBL Filtering** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Scheduled/Automated Reports** | Not enough data | Not enough data | 
| **For MSPs** | Not enough data | Not enough data | 
| **Whitelisting/Blacklisting** | Not enough data | Not enough data | 
| **Fraud Detection** | Not enough data | Not enough data | 
| **Spam Blocker** | Not enough data | Not enough data | 
| **Spam Quarantine** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Data Leak Prevention** | Not enough data | Not enough data | 
| **Encryption** | Not enough data | Not enough data | 
| **Audit Trail** | Not enough data | Not enough data | 
| **Real-Time Monitoring** | Not enough data | Not enough data | 
| **Spam Analysis** | Not enough data | Not enough data | 
| **Policy Management** | Not enough data | Not enough data | 
| **Alerts/Escalation** | Not enough data | Not enough data | 
| **Email Management** | Not enough data | Not enough data | 
| **Vulnerability Scanning** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Threat Protection** | Not enough data | Not enough data | 
| **Email Attachment Protection** | Not enough data | Not enough data | 
| **Email Filtering** | Not enough data | Not enough data | 
| **Two-Factor Authentication** | Not enough data | Not enough data | 

### Network Security

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | N/A | N/A |

#### Additional Functionality

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Penetration Testing** | Not enough data | Not enough data | 
| **Alerts/Notifications** | Not enough data | Not enough data | 
| **Audit Trail** | Not enough data | Not enough data | 
| **Anti Virus** | Not enough data | Not enough data | 
| **Vulnerability Scanning** | Not enough data | Not enough data | 
| **Remote Monitoring & Management** | Not enough data | Not enough data | 
| **VPN** | Not enough data | Not enough data | 
| **Behavior Analytics** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **Real-Time Notifications** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **SSL Security** | Not enough data | Not enough data | 
| **Patch Management** | Not enough data | Not enough data | 
| **Event Logs** | Not enough data | Not enough data | 
| **Anomaly/Malware Detection** | Not enough data | Not enough data | 
| **DNS Leak Protection** | Not enough data | Not enough data | 
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **Server Monitoring** | Not enough data | Not enough data | 
| **Real-Time Monitoring** | Not enough data | Not enough data | 
| **Compliance Management** | Not enough data | Not enough data | 
| **Network Provisioning** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Email Alerts** | Not enough data | Not enough data | 
| **Security Auditing** | Not enough data | Not enough data | 
| **Intrusion Detection System** | Not enough data | Not enough data | 
| **Data Visualization** | Not enough data | Not enough data | 
| **Two-Factor Authentication** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Firewalls** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Anti Spam** | Not enough data | Not enough data | 
| **Threat Response** | Not enough data | Not enough data | 
| **Activity Monitoring** | Not enough data | Not enough data | 
| **Risk Alerts** | Not enough data | Not enough data | 
| **Data Loss Prevention** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 
| **Intrusion Prevention System** | Not enough data | Not enough data | 
| **Secure Login** | Not enough data | Not enough data | 
| **Policy Management** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 

### Network Sandboxing

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | 8.9/10 | 27 |

#### Sandbox

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Sandbox** | Not enough data | 8.9 (22 reviews) | 

#### Evaluation

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Malware Evaluation** | Not enough data | 9.0 (21 reviews) | 
| **Automatic Submission** | Not enough data | 9.0 (20 reviews) | 
| **Automatic Evaluation** | Not enough data | 9.1 (21 reviews) | 
| **Malware Probability Scores** | Not enough data | 8.6 (20 reviews) | 

### Data Loss Prevention (DLP)

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | 9.1/10 | 39 |

#### Administration

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Data Management** | Not enough data | 9.2 (30 reviews) | 
| **Incident Logs** | Not enough data | 9.1 (31 reviews) | 
| **Reporting** | Not enough data | 9.0 (28 reviews) | 
| **Workflow Management** | Not enough data | Not enough data | 
| **Remediation Management** | Not enough data | Not enough data | 
| **User Management** | Not enough data | Not enough data | 
| **Configuration Management** | Not enough data | Not enough data | 

#### Governance

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Access Control** | Not enough data | 9.4 (31 reviews) | 
| **Compliance** | Not enough data | 9.2 (28 reviews) | 
| **Data Visibility** | Not enough data | 9.2 (29 reviews) | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 

#### Security

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Encryption** | Not enough data | 9.3 (30 reviews) | 
| **Endpoint Intelligence** | Not enough data | 9.0 (28 reviews) | 
| **Activity Monitoring** | Not enough data | 9.2 (30 reviews) | 
| **Breach Detection** | Not enough data | 9.1 (29 reviews) | 

#### Additional Functionality

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Personally Identifiable Information Protection** | Not enough data | Not enough data | 
| **Data Discovery** | Not enough data | Not enough data | 
| **Behavior Tracking** | Not enough data | Not enough data | 
| **Remote Wipe** | Not enough data | Not enough data | 
| **Risk Analysis** | Not enough data | Not enough data | 
| **Insider Threat Protection** | Not enough data | Not enough data | 
| **Anti Virus** | Not enough data | Not enough data | 
| **Whitelisting/Blacklisting** | Not enough data | Not enough data | 
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **Watermarking** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Security Auditing** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Ransomware Protection** | Not enough data | Not enough data | 
| **Multi-Factor Authentication** | Not enough data | Not enough data | 
| **Automatic Backup** | Not enough data | Not enough data | 
| **Multi-Device Support** | Not enough data | Not enough data | 
| **Compliance Tracking** | Not enough data | Not enough data | 
| **Real-Time Analytics** | Not enough data | Not enough data | 
| **Secure Data Storage** | Not enough data | Not enough data | 
| **Data Recovery** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **External Storage Device Blocking** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **Audit Trail** | Not enough data | Not enough data | 
| **File Quarantining** | Not enough data | Not enough data | 
| **Disaster Recovery** | Not enough data | Not enough data | 
| **Intellectual Property Protection** | Not enough data | Not enough data | 
| **Alerts/Escalation** | Not enough data | Not enough data | 
| **Risk Assessment** | Not enough data | Not enough data | 
| **Sensitive Data Identification** | Not enough data | Not enough data | 
| **Real-Time Notifications** | Not enough data | Not enough data | 
| **Risk Alerts** | Not enough data | Not enough data | 
| **Data Classification** | Not enough data | Not enough data | 
| **Data Replication** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **File Transfer** | Not enough data | Not enough data | 
| **HIPAA Compliant** | Not enough data | Not enough data | 

### Cloud Email Security

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | 8.5/10 | 140 |
| **Zscaler Internet Access** | N/A | N/A |

#### Administration

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Intelligence Reporting** | 8.0 (117 reviews) | Not enough data | 
| **Email Integration Suppor** | 8.4 (121 reviews) | Not enough data | 
| **Access Management** | 8.2 (117 reviews) | Not enough data | 
| **Data Loss Prevention** | 8.2 (101 reviews) | Not enough data | 

#### Maintenance

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Auditing** | 8.1 (116 reviews) | Not enough data | 
| **Allow and block lists** | 8.9 (122 reviews) | Not enough data | 
| **Compliance** | 8.5 (108 reviews) | Not enough data | 
| **Archiving** | 8.6 (115 reviews) | Not enough data | 

#### Security

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Anti-Malware/Anti-Spam** | 9.0 (134 reviews) | Not enough data | 
| **Encryption** | 8.2 (110 reviews) | Not enough data | 
| **Quarantine** | 9.0 (129 reviews) | Not enough data | 
| **Advanced Threat Protection (ATP)** | 8.8 (124 reviews) | Not enough data | 
| **Anti-Phishing** | 8.8 (127 reviews) | Not enough data | 
| **Account takeover prevention** | 7.7 (88 reviews) | Not enough data | 

### Firewall Software

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | 9.1/10 | 52 |

#### Administration

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Policy Management** | Not enough data | 8.8 (44 reviews) | 
| **Logging and Reporting** | Not enough data | 9.2 (43 reviews) | 
| **Application Gateway** | Not enough data | 9.2 (44 reviews) | 
| **Concurrent Sessions** | Not enough data | 9.1 (43 reviews) | 
| **Uptime Reporting** | Not enough data | Not enough data | 
| **Web Traffic Reporting** | Not enough data | Not enough data | 
| **Compliance Management** | Not enough data | Not enough data | 
| **Access Management** | Not enough data | Not enough data | 
| **Incident Management** | Not enough data | Not enough data | 
| **Audit Management** | Not enough data | Not enough data | 
| **Remote Monitoring & Management** | Not enough data | Not enough data | 

#### Agentic AI - Firewall Software

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Autonomous Task Execution** | Not enough data | 9.7 (6 reviews) | 
| **Adaptive Learning** | Not enough data | 9.7 (6 reviews) | 
| **AI/Machine Learning** | Not enough data | Not enough data | 

#### Functionality

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Virtual Private Network (VPN)** | Not enough data | 9.2 (41 reviews) | 
| **Antivirus** | Not enough data | 9.0 (41 reviews) | 
| **URL Filtering** | Not enough data | 9.2 (43 reviews) | 
| **Availability** | Not enough data | 9.1 (42 reviews) | 
| **IP Filtering** | Not enough data | Not enough data | 

#### Monitoring

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Load Balancing** | Not enough data | 9.0 (44 reviews) | 
| **Continuous Analysis** | Not enough data | 9.1 (43 reviews) | 
| **Intrusion Prevention** | Not enough data | 9.3 (44 reviews) | 
| **Intrusion Detection** | Not enough data | 9.2 (43 reviews) | 
| **Intrusion Detection System** | Not enough data | Not enough data | 
| **Intrusion Prevention System** | Not enough data | Not enough data | 

#### Generative AI

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **AI Text Summarization** | Not enough data | 8.2 (17 reviews) | 
| **Generative AI** | Not enough data | Not enough data | 

#### Artificial Intelligence - Firewall

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **AI Firewall** | Not enough data | 9.7 (6 reviews) | 

#### Additional Functionality

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Spam Blocker** | Not enough data | Not enough data | 
| **Alerts/Escalation** | Not enough data | Not enough data | 
| **Role-Based Permissions** | Not enough data | Not enough data | 
| **Network Monitoring** | Not enough data | Not enough data | 
| **Visual Analytics** | Not enough data | Not enough data | 
| **Customizable Reports** | Not enough data | Not enough data | 
| **Real-Time Analytics** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Anti Spam** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Real-Time Monitoring** | Not enough data | Not enough data | 
| **Real-Time Notifications** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **Hardware Integration** | Not enough data | Not enough data | 
| **Summary Reports** | Not enough data | Not enough data | 
| **Alerts/Notifications** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Real-Time Data** | Not enough data | Not enough data | 
| **Server Monitoring** | Not enough data | Not enough data | 
| **Two-Factor Authentication** | Not enough data | Not enough data | 
| **Log Access** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **Multi-Location** | Not enough data | Not enough data | 
| **SSL Security** | Not enough data | Not enough data | 
| **Behavior Tracking** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Event Logs** | Not enough data | Not enough data | 
| **Vulnerability Scanning** | Not enough data | Not enough data | 
| **Risk Alerts** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 
| **Dashboard Creation** | Not enough data | Not enough data | 
| **Monitoring** | Not enough data | Not enough data | 

### Software-Defined Perimeter (SDP)

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | 8.6/10 | 11 |

#### Administration

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Network Segmentation** | Not enough data | 8.3 (8 reviews) | 
| **Scalability** | Not enough data | 8.3 (8 reviews) | 
| **Global Access** | Not enough data | 8.3 (9 reviews) | 

#### Protection

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Policy Enforcement** | Not enough data | 9.0 (10 reviews) | 
| **Security Audit** | Not enough data | 9.3 (10 reviews) | 
| **Access Control** | Not enough data | 9.1 (9 reviews) | 
| **User Authentication** | Not enough data | 8.8 (8 reviews) | 

#### Monitoring

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Compliance Monitoring** | Not enough data | 8.8 (10 reviews) | 
| **Vulnerability Monitoring** | Not enough data | 8.9 (9 reviews) | 
| **Configuration Monitoring** | Not enough data | 8.8 (8 reviews) | 
| **Observability** | Not enough data | 8.5 (8 reviews) | 

### Intelligent Email Protection

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | 8.7/10 | 138 |
| **Zscaler Internet Access** | N/A | N/A |

#### Administration

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Compliance** | 8.5 (112 reviews) | Not enough data | 
| **Intelligence Reporting** | 8.6 (124 reviews) | Not enough data | 
| **Email Clients** | 9.1 (127 reviews) | Not enough data | 
| **Role-Based Rules** | 8.9 (127 reviews) | Not enough data | 

#### Detection

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Data Exfiltration Detection** | 8.3 (115 reviews) | Not enough data | 
| **Activity Monitoring** | 8.5 (119 reviews) | Not enough data | 
| **Real-Time Detection** | 8.9 (126 reviews) | Not enough data | 

#### Protection

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Targeted Attack Prevention** | 9.0 (125 reviews) | Not enough data | 
| **Policy Enforcement** | 9.0 (130 reviews) | Not enough data | 
| **Spam Filtering** | 9.1 (133 reviews) | Not enough data | 

#### Agentic AI - Intelligent Email Protection

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Autonomous Task Execution** | 7.9 (8 reviews) | Not enough data | 
| **Adaptive Learning** | 8.1 (8 reviews) | Not enough data | 

### Secure Email Gateway

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | 8.9/10 | 135 |
| **Zscaler Internet Access** | N/A | N/A |

#### Functionality

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Anti-Spam** | 9.1 (133 reviews) ✓ Verified | Not enough data | 
| **Anti-Malware** | 9.2 (133 reviews) ✓ Verified | Not enough data | 
| **Anti-Phishing** | 8.8 (133 reviews) ✓ Verified | Not enough data | 
| **Filtering Functionality** | 9.0 (131 reviews) ✓ Verified | Not enough data | 
| **Quarantine** | 9.0 (131 reviews) ✓ Verified | Not enough data | 
| **Outbound Email Monitoring** | 9.1 (126 reviews) ✓ Verified | Not enough data | 
| **Advanced Threat Intelligence/Protection** | 9.0 (129 reviews) ✓ Verified | Not enough data | 
| **Archiving** | 8.8 (123 reviews) ✓ Verified | Not enough data | 
| **Reporting** | 8.5 (130 reviews) ✓ Verified | Not enough data | 
| **On-prem deployment** | Feature Not Available | Not enough data | 
| **Email Attachment Protection** | Not enough data | Not enough data | 
| **Phishing Protection** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 

#### Agentic AI - Secure Email Gateway

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Proactive Assistance** | Not enough data | Not enough data | 

#### Additional Functionality

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Audit Trail** | Not enough data | Not enough data | 
| **Allow/Block List** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Vulnerability Scanning** | Not enough data | Not enough data | 
| **Active Directory Integration** | Not enough data | Not enough data | 
| **Threat Response** | Not enough data | Not enough data | 
| **Search** | Not enough data | Not enough data | 
| **Intrusion Detection System** | Not enough data | Not enough data | 
| **Compliance Management** | Not enough data | Not enough data | 
| **Spam Blocker** | Not enough data | Not enough data | 
| **Encryption** | Not enough data | Not enough data | 
| **Data Verification** | Not enough data | Not enough data | 
| **Audit Management** | Not enough data | Not enough data | 
| **Alerts/Escalation** | Not enough data | Not enough data | 
| **Policy Management** | Not enough data | Not enough data | 
| **Customizable Reports** | Not enough data | Not enough data | 
| **Archiving & Retention** | Not enough data | Not enough data | 
| **Data Synchronization** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **Microsoft Outlook Integration** | Not enough data | Not enough data | 
| **SSL Security** | Not enough data | Not enough data | 
| **Secure Login** | Not enough data | Not enough data | 
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **Spam Detection** | Not enough data | Not enough data | 
| **Real-Time Notifications** | Not enough data | Not enough data | 
| **Scheduled/Automated Reports** | Not enough data | Not enough data | 
| **Email Tracking** | Not enough data | Not enough data | 
| **Fraud Detection** | Not enough data | Not enough data | 
| **Event Logs** | Not enough data | Not enough data | 
| **Data Retention Management** | Not enough data | Not enough data | 
| **Backup and Recovery** | Not enough data | Not enough data | 
| **Threat Intelligence** | Not enough data | Not enough data | 
| **Whitelisting/Blacklisting** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Two-Factor Authentication** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Anti Virus** | Not enough data | Not enough data | 
| **Data Loss Prevention** | Not enough data | Not enough data | 
| **Risk Alerts** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Password Management** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Authentication** | Not enough data | Not enough data | 

### Secure Web Gateways

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | 8.9/10 | 117 |

#### Web Content and Traffic Filtering - Secure Web Gateways

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **SSL/TLS Inspection** | Not enough data | 8.8 (56 reviews) | 
| **Content Filtering** | Not enough data | 8.9 (45 reviews) | 
| **URL Filtering** | Not enough data | 8.5 (63 reviews) | 
| **Real-Time Traffic Inspection** | Not enough data | 9.2 (51 reviews) | 
| **Ad and Tracker Blocking** | Not enough data | 8.5 (35 reviews) | 

#### Data Protection and Loss Prevention - Secure Web Gateways

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Data Loss Prevention (DLP)** | Not enough data | 9.2 (49 reviews) | 
| **Phishing Protection** | Not enough data | 9.2 (41 reviews) | 
| **Malware Protection** | Not enough data | 9.4 (54 reviews) | 
| **Cloud Access Security** | Not enough data | 9.0 (42 reviews) | 

#### Access Control and Authentication - Secure Web Gateways

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Application Control** | Not enough data | 8.9 (47 reviews) | 
| **Authentication and Access Control** | Not enough data | 8.9 (55 reviews) | 
| **User and Group Policies** | Not enough data | 9.3 (46 reviews) | 

#### Performance and Management - Secure Web Gateways

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Customizable Policy Enforcement** | Not enough data | 8.2 (69 reviews) | 
| **Bandwidth Management** | Not enough data | 8.7 (36 reviews) | 
| **Integration Capabilities** | Not enough data | 8.6 (44 reviews) | 
| **Reporting and Logging** | Not enough data | 8.3 (60 reviews) | 
| **Threat Intelligence Integration** | Not enough data | 9.0 (38 reviews) | 

### Zero Trust Platforms

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | 9.4/10 | 13 |

#### Identity and Access Management - Zero Trust Platforms

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Single sign-on (SSO)** | Not enough data | 9.3 (7 reviews) | 
| **Multi-factor authentication (MFA)** | Not enough data | 9.3 (7 reviews) | 
| **Role-based access control (RBAC)** | Not enough data | 9.5 (7 reviews) | 
| **Identity federation** | Not enough data | 9.3 (7 reviews) | 

#### Security - Zero Trust Platforms

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Encryption** | Not enough data | 10.0 (7 reviews) | 
| **Endpoint detection and response (EDR)** | Not enough data | 9.0 (7 reviews) | 
| **Device posture assessment** | Not enough data | 9.5 (7 reviews) | 
| **Micro-segmentation** | Not enough data | 9.3 (7 reviews) | 
| **Zero trust network access (ZTNA)** | Not enough data | 9.8 (7 reviews) | 

#### Data Security - Zero Trust Platforms

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Data loss prevention (DLP)** | Not enough data | 10.0 (8 reviews) | 
| **Data classification** | Not enough data | 9.8 (7 reviews) | 

#### Application Visibility - Zero Trust Platforms

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **API support** | Not enough data | 8.8 (7 reviews) | 
| **Application-level controls** | Not enough data | 9.4 (8 reviews) | 
| **Secure application access** | Not enough data | 9.6 (8 reviews) | 
| **User and entity behavior analytics (UEBA)** | Not enough data | 8.8 (7 reviews) | 
| **Continuous monitoring** | Not enough data | 9.4 (8 reviews) | 

#### Reporting and Policies - Zero Trust Platforms

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Policy automation** | Not enough data | 9.3 (7 reviews) | 
| **Regulatory compliance** | Not enough data | 9.8 (7 reviews) | 
| **Cross-platform compatibility** | Not enough data | 9.8 (9 reviews) | 
| **Policy enforcement** | Not enough data | 9.2 (8 reviews) | 
| **Comprehensive reporting** | Not enough data | 9.0 (7 reviews) | 

#### Agentic AI - Zero Trust Platforms

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Autonomous Task Execution** | Not enough data | 8.8 (7 reviews) | 
| **Cross-system Integration** | Not enough data | 8.5 (8 reviews) | 
| **Adaptive Learning** | Not enough data | 9.3 (7 reviews) | 
| **Proactive Assistance** | Not enough data | 9.3 (7 reviews) | 

### Secure Service Edge (SSE) Solutions

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | N/A | N/A |

#### Components - Secure Service Edge (SSE)

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Secure Web Gateway (SWG)** | Not enough data | Not enough data | 
| **Firewall as a Service** | Not enough data | Not enough data | 
| **Zero Trust Network Access (ZTNA)** | Not enough data | Not enough data | 
| **Cloud Access Security Broker (CASB)** | Not enough data | Not enough data | 

#### Artificial Intelligence -Secure Service Edge (SSE)

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Automation** | Not enough data | Not enough data | 
| **Predictive Capabilities** | Not enough data | Not enough data | 
| **Real-Time Threat Detection** | Not enough data | Not enough data | 

#### Agentic AI - Secure Service Edge (SSE)

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Decision Making** | Not enough data | Not enough data | 
| **Autonomous Task Execution** | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | 

### AI Security Solutions

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | N/A | N/A |

#### Model Protection - AI Security Solutions

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Input Hardening** | Not enough data | Not enough data | 
| **Input/Output Inspection** | Not enough data | Not enough data | 
| **Integrity Monitoring** | Not enough data | Not enough data | 
| **Model Access Control** | Not enough data | Not enough data | 

#### Runtime Monitoring - AI Security Solutions

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **AI Behavior Anomaly Detection** | Not enough data | Not enough data | 
| **Audit Trail** | Not enough data | Not enough data | 

#### Policy Enforcement and Compliance - AI Security Solutions

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Scalable Governance** | Not enough data | Not enough data | 
| **Integrations** | Not enough data | Not enough data | 
| **Shadow AI** | Not enough data | Not enough data | 
| **Policy‑as‑Code for AI Assets** | Not enough data | Not enough data | 

### Cloud Security

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | N/A | N/A |

#### Cloud Visibility

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Data Discovery** | Not enough data | Not enough data | 
| **Cloud Registry** | Not enough data | Not enough data | 
| **Cloud Gap Analytics** | Not enough data | Not enough data | 

#### Security

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Data Security** | Not enough data | Not enough data | 
| **Data loss Prevention** | Not enough data | Not enough data | 
| **Security Auditing** | Not enough data | Not enough data | 
| **Real-Time Data** | Not enough data | Not enough data | 
| **Cloud Application Security** | Not enough data | Not enough data | 
| **SSL Security** | Not enough data | Not enough data | 

#### Identity

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **SSO** | Not enough data | Not enough data | 
| **Governance** | Not enough data | Not enough data | 
| **User Analytics** | Not enough data | Not enough data | 
| **Real-Time Analytics** | Not enough data | Not enough data | 
| **Visual Analytics** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 

#### Additional Functionality

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Alerts/Notifications** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Endpoint Management** | Not enough data | Not enough data | 
| **Intrusion Detection System** | Not enough data | Not enough data | 
| **Compliance Management** | Not enough data | Not enough data | 
| **HIPAA Compliant** | Not enough data | Not enough data | 
| **Search/Filter** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Two-Factor Authentication** | Not enough data | Not enough data | 
| **Data Visualization** | Not enough data | Not enough data | 
| **Risk Assessment** | Not enough data | Not enough data | 
| **Real-Time Monitoring** | Not enough data | Not enough data | 
| **Event Logs** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Audit Management** | Not enough data | Not enough data | 
| **Cloud Security Policy Management** | Not enough data | Not enough data | 
| **Vulnerability Protection** | Not enough data | Not enough data | 
| **Anti Virus** | Not enough data | Not enough data | 
| **Incident Management** | Not enough data | Not enough data | 
| **Threat Intelligence** | Not enough data | Not enough data | 
| **Real-Time Reporting** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **User Management** | Not enough data | Not enough data | 
| **Encryption** | Not enough data | Not enough data | 
| **Vulnerability Scanning** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Status Tracking** | Not enough data | Not enough data | 
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **Real-Time Notifications** | Not enough data | Not enough data | 
| **Patch Management** | Not enough data | Not enough data | 
| **Monitoring** | Not enough data | Not enough data | 
| **Cloud Encryption** | Not enough data | Not enough data | 

### Data Security

| Product | Score | Reviews |
|---|---|---|
| **Mimecast Advanced Email Security** | N/A | N/A |
| **Zscaler Internet Access** | N/A | N/A |

#### Compliance

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Access Management** | Not enough data | Not enough data | 
| **At-Risk Analysis** | Not enough data | Not enough data | 
| **DLP Configuration** | Not enough data | Not enough data | 
| **Sensitive Data Compliance** | Not enough data | Not enough data | 

#### Administration

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Database Management** | Not enough data | Not enough data | 
| **Deduplication ** | Not enough data | Not enough data | 
| **Backup** | Not enough data | Not enough data | 
| **API / integrations** | Not enough data | Not enough data | 

#### Security 

| Feature | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Multi-Factor Authentication** | Not enough data | Not enough data | 
| **Data Transport** | Not enough data | Not enough data | 
| **Data Types** | Not enough data | Not enough data | 
| **Security Tools** | Not enough data | Not enough data | 

---
## Categories

**Unique to Mimecast Advanced Email Security (4):** [Intelligent Email Protection Software](https://www.g2.com/categories/intelligent-email-protection), [Cloud Email Security Solutions](https://www.g2.com/categories/cloud-email-security), [Secure Email Gateway Software](https://www.g2.com/categories/secure-email-gateway), [Browser Isolation Software](https://www.g2.com/categories/browser-isolation)

**Unique to Zscaler Internet Access (8):** [Secure Service Edge (SSE) Solutions](https://www.g2.com/categories/secure-service-edge-sse-solutions), [Zero Trust Platforms](https://www.g2.com/categories/zero-trust-platforms), [Software-Defined Perimeter (SDP) Software](https://www.g2.com/categories/software-defined-perimeter-sdp), [Data Loss Prevention (DLP) Software](https://www.g2.com/categories/data-loss-prevention-dlp), [Network Sandboxing Software](https://www.g2.com/categories/network-sandboxing), [Secure Web Gateway Software](https://www.g2.com/categories/secure-web-gateways), [Firewall Software](https://www.g2.com/categories/firewall-software), [AI Security Solutions Software](https://www.g2.com/categories/ai-security-solutions)


---
## Reviewer Demographics

### By Company Size

| Segment | Mimecast Advanced Email Security | Zscaler Internet Access | 
|---|---|---|
| **Small-Business** | 16.2% | 14.8% | 
| **Mid-Market** | 67.8% | 29.9% | 
| **Enterprise** | 15.9% | 55.3% | 

### By Industry

#### Mimecast Advanced Email Security

- **Legal Services:** 8.9%
- **Financial Services:** 7.4%
- **Information Technology and Services:** 7.4%
- **Construction:** 4.7%
- **Computer Software:** 4.1%
- **Law Practice:** 4.1%
- **Computer & Network Security:** 3.6%
- **Hospital & Health Care:** 3.6%
- **Insurance:** 3.3%
- **Marketing and Advertising:** 2.7%
- **Other:** 50.3%

#### Zscaler Internet Access

- **Information Technology and Services:** 22.4%
- **Computer Software:** 9.6%
- **Computer & Network Security:** 6.4%
- **Financial Services:** 5.9%
- **Hospital & Health Care:** 5.0%
- **Telecommunications:** 4.1%
- **Accounting:** 3.7%
- **Consulting:** 3.2%
- **Banking:** 2.3%
- **Computer Networking:** 2.3%
- **Other:** 35.2%

---
## Alternatives

### Alternatives to Mimecast Advanced Email Security

- [Proofpoint Core Email Protection](https://www.g2.com/products/proofpoint-core-email-protection/reviews) — 4.6/5 stars (601 reviews)
- [SpamTitan Email Security](https://www.g2.com/products/spamtitan-email-security/reviews) — 4.5/5 stars (199 reviews)
- [Cloudflare One (SASE)](https://www.g2.com/products/cloudflare-one-sase/reviews) — 4.6/5 stars (105 reviews)
- [Cisco Secure Email Threat Defense](https://www.g2.com/products/cisco-secure-email-threat-defense/reviews) — 4.3/5 stars (28 reviews)
- [Microsoft Defender for Office 365](https://www.g2.com/products/microsoft-microsoft-defender-for-office-365/reviews) — 4.5/5 stars (299 reviews)
- [Abnormal AI](https://www.g2.com/products/abnormal-ai/reviews) — 4.8/5 stars (78 reviews)
- [KnowBe4 Cloud Email Security (Formerly Egress)](https://www.g2.com/products/knowbe4-cloud-email-security-formerly-egress/reviews) — 4.5/5 stars (74 reviews)
- [Barracuda Email Gateway Defense](https://www.g2.com/products/barracuda-email-gateway-defense/reviews) — 4.2/5 stars (39 reviews)
- [FortiMail](https://www.g2.com/products/fortimail/reviews) — 4.3/5 stars (24 reviews)
- [N-able Mail Assure](https://www.g2.com/products/n-able-mail-assure/reviews) — 4.0/5 stars (68 reviews)

### Alternatives to Zscaler Internet Access

- [Check Point SASE](https://www.g2.com/products/check-point-sase/reviews) — 4.5/5 stars (227 reviews)
- [Netskope One Platform](https://www.g2.com/products/netskope-one-platform/reviews) — 4.4/5 stars (94 reviews)
- [Absolute Secure Access](https://www.g2.com/products/absolute-secure-access/reviews) — 4.7/5 stars (225 reviews)
- [Check Point Next Generation Firewalls (NGFWs)](https://www.g2.com/products/check-point-next-generation-firewalls-ngfws/reviews) — 4.5/5 stars (593 reviews)
- [Microsoft Defender for Cloud](https://www.g2.com/products/microsoft-defender-for-cloud/reviews) — 4.4/5 stars (434 reviews)
- [Cisco Duo](https://www.g2.com/products/cisco-duo/reviews) — 4.5/5 stars (520 reviews)
- [Cisco Umbrella](https://www.g2.com/products/cisco-umbrella/reviews) — 4.4/5 stars (284 reviews)
- [FortiClient](https://www.g2.com/products/forticlient/reviews) — 4.4/5 stars (278 reviews)
- [Sophos Firewall](https://www.g2.com/products/sophos-firewall/reviews) — 4.7/5 stars (869 reviews)
- [DNSFilter](https://www.g2.com/products/dnsfilter/reviews) — 4.6/5 stars (272 reviews)

---
## Top Discussions

### Mimecast Advanced Email Security

- Title: [Has anyone implemented ingesting the Audit logs from Mimecast into Graylog?](https://www.g2.com/discussions/has-anyone-implemented-ingesting-the-audit-logs-from-mimecast-into-graylog) — 3 comments, 1 upvote
  > **Top comment:** "I have not, I just use the built in alerts and mxtoolbox for mail flow."
- Title: [What is Mimecast Email Security with Targeted Threat Protection used for?](https://www.g2.com/discussions/what-is-mimecast-email-security-with-targeted-threat-protection-used-for) — 2 comments
  > **Top comment:** "Mimecast Email Security with Targeted Threat Protection is used to defend against phishing, malware, ransomware, and impersonation attacks.... It provides..."

### Zscaler Internet Access

- Title: [What is Zscaler Internet Access used for?](https://www.g2.com/discussions/what-is-zscaler-internet-access-used-for) — 2 comments
  > **Top comment:** "Block the unwanted access of websites where organizations control it from anywhere via this tool."

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/mimecast-advanced-email-security-vs-zscaler-internet-access)