Side by side
GMass vs Windward Core
Both stand on mail merge software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free trial ExtensionWeb
GMass brings campaign sending and management into Gmail, with options for personalization, follow-ups, and integrations. Consider its pricing, email-list data practices, and settings interface before choosing it.
Visit GMass Free trial APILinuxSelf-hosted+1
Consider Windward Core if your application needs to generate personalized documents from templates and connected data. Its Office-based Designer and multi-language Engine support several integration approaches; teams seeking known pricing upfront should look elsewhere, since pricing is on request.
Visit Windward CoreThe facts
| GMass | Windward Core | |
|---|---|---|
| Free plan | A free trial | Not published |
| Open source | Not published | Not published |
| Runs on | Extension, Web | API, Linux, Self-hosted, Windows |
| Lowest paid plan | Premium: $349 a year | Free or on request |
| Plans published | 6 | 1 |
| Maker | Not published | Not published |
| Website | gmass.co | windwardstudios.com |
| On mail merge software | #18 of 27 | #22 of 27 |
GMass: what it does well
- Personalizes campaigns with mail merge and conditional logic
- Uses Google Sheets rows and columns for campaign data
- Includes analytics, scheduling, follow-ups, and A/B testing
- Offers API, webhooks, Zapier, and SMTP relay connections
What to know first
- No free plan, though a free trial is available
- The settings interface may overwhelm wizard-preferring users
- Stores recipient email addresses and may share list information for targeted advertising
Windward Core: what it does well
- Templates use Word, Excel, or PowerPoint with tags and conditional logic.
- A template can combine multiple data sources.
- Connects to 147 vendors and SQL, JSON, XML, and OData.
- Supports 18 output formats and batch personalization.
- Offers Java, .NET, and RESTful Engine options.
What to know first
- Pricing is available only on request.
- The Designer requires Microsoft Office for Windows.
- The 30-day trial is time-limited.
Alternatives to GMass Alternatives to Windward Core The whole list