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Millie vs Zei Comparison (2026)
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Submittable
4.8

Benevity
3.4
Good recommendations?
Overview
Millie is a cloud-based donation and volunteering platform offering features such as online giving, volunteer events management, donation matching and more.
Zei is a sustainability management platform that helps organizations measure and reduce their carbon footprint, centralize ESG data, engage suppliers, and streamline sustainability reporting from a single platform.
- Platforms supported
- Web-based
- iPhone app
- Android app
- Windows Phone app
- Typical customers
- Freelancers
- Small businesses
- Mid size businesses
- Large enterprises
- Customer support
- Phone
- Online
- Knowledge base
- Video tutorials
- Platforms supported
- Web-based
- iPhone app
- Android app
- Windows Phone app
- Typical customers
- Freelancers
- Small businesses
- Mid size businesses
- Large enterprises
- Customer support
- Phone
- Online
- Knowledge base
- Video tutorials
Video & Screenshots
Pricing
User reviews
4.9
41
5
4
3
2
1
37
4
0
0
0
- Value for money
- Ease of use
- Features
- Customer support
4.7
45
5
4
3
2
1
32
12
1
0
0
- Value for money
- Ease of use
- Features
- Customer support
Pros

Seth S.
Director, Analysis and Insights

Alicia D.
Senior Software Engineer

Amanda J.
Account Manager
Pros

Emmanuel N.
CEO
Axelle K.
RSE QSE
Cons
Kishore N.
Electrical Enginer
Cons
Not enoughreviews yet
- Vendor responds to reviews
- Last review2 months ago
- Vendor responds to reviews
- Last review13 days ago
Key features
- Total features29
- AI Copilot
- AI/Machine Learning
- Access Controls/Permissions
- Activity Dashboard
- Activity Tracking
- Ad hoc Reporting
- Air Emissions Management
- Alerts/Notifications
- Archiving & Retention
- Assessment Management
- Attendance Management
- Audit Management
- Audit Trail
- Auditing
- Benchmarking
- Calendar Management
- Carbon Emissions Calculations
- Change Management
- Compliance Management
- Compliance Tracking
- Contribution Tracking
- Corrective and Preventive Actions (CAPA)
- Customizable Branding
- Customizable Dashboard
- Customizable Reports
- Customizable Templates
- Data Collection
- Data Import/Export
- Data Management
- Data Visualization
- Disclosure Management
- Document Management
- Donation Disbursement Management
- Donation Management
- Donation Matching
- Email Alerts
- Emission Calculations
- Emission Reduction Planning
- Emissions Management
- Emissions Monitoring
- Employee Engagement
- Energy Management
- Environmental Compliance
- Environmental Metrics
- Event Management
- Forecasting
- Forms Management
- Framework Management
- Fundraising Campaign Management
- Fundraising Campaign Tracking
- Generative AI
- Goal Setting/Tracking
- Grant Management
- Greenhouse Gas Tracking
- Group Management
- Hazardous Materials Management
- Impact Management
- Incident Management
- Mobile Access
- Multi-Channel Data Collection
- Multi-Location
- Online Giving
- Online Payments
- Performance Metrics
- Policy Management
- Reminders
- Reporting & Statistics
- Reporting/Analytics
- Reporting/Project Tracking
- Scoring
- Secure Data Storage
- Stakeholder Engagement
- Sustainability Management
- Task Management
- Third-Party Integrations
- Time Tracking
- Training Management
- User Management
- Volunteer Recruiting
- Waste Management
- Water Management
- Workflow Management
- Total features58
- AI Copilot
- AI/Machine Learning
- Access Controls/Permissions
- Activity Dashboard
- Activity Tracking
- Ad hoc Reporting
- Air Emissions Management
- Alerts/Notifications
- Archiving & Retention
- Assessment Management
- Attendance Management
- Audit Management
- Audit Trail
- Auditing
- Benchmarking
- Calendar Management
- Carbon Emissions Calculations
- Change Management
- Compliance Management
- Compliance Tracking
- Contribution Tracking
- Corrective and Preventive Actions (CAPA)
- Customizable Branding
- Customizable Dashboard
- Customizable Reports
- Customizable Templates
- Data Collection
- Data Import/Export
- Data Management
- Data Visualization
- Disclosure Management
- Document Management
- Donation Disbursement Management
- Donation Management
- Donation Matching
- Email Alerts
- Emission Calculations
- Emission Reduction Planning
- Emissions Management
- Emissions Monitoring
- Employee Engagement
- Energy Management
- Environmental Compliance
- Environmental Metrics
- Event Management
- Forecasting
- Forms Management
- Framework Management
- Fundraising Campaign Management
- Fundraising Campaign Tracking
- Generative AI
- Goal Setting/Tracking
- Grant Management
- Greenhouse Gas Tracking
- Group Management
- Hazardous Materials Management
- Impact Management
- Incident Management
- Mobile Access
- Multi-Channel Data Collection
- Multi-Location
- Online Giving
- Online Payments
- Performance Metrics
- Policy Management
- Reminders
- Reporting & Statistics
- Reporting/Analytics
- Reporting/Project Tracking
- Scoring
- Secure Data Storage
- Stakeholder Engagement
- Sustainability Management
- Task Management
- Third-Party Integrations
- Time Tracking
- Training Management
- User Management
- Volunteer Recruiting
- Waste Management
- Water Management
- Workflow Management
Integrations
- Total integrations5
- Auth0
- Google Calendar Extension
- Jira
- Lucca
- Microsoft Entra ID
- Okta
- Slack
- Total integrations2
- Auth0
- Google Calendar Extension
- Jira
- Lucca
- Microsoft Entra ID
- Okta
- Slack
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