Mosaico is an open-source, template-driven, drag-and-drop email template builder that produces responsive HTML email templates, supports block-based composition and a template language for master templates, and is intended for embedding into larger email-sending platforms rather than for handling list management or sending.
Published Sep 9, 2026
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| Aspect | Mosaico | Unlayer | Stripo |
|---|---|---|---|
| Starting Price | Published under GPL for self-host/embed; commercial edition/support available (pricing not clearly public) | Public pricing page available (plan structure published; exact entry price depends on current plans) | Free version available; paid tiers widely referenced |
| Best For | Engineering-led teams needing an open-source editor they can host and control; products like Mailtrain and CiviCRM embedding | SaaS teams embedding a polished, commercially supported editor with white-label needs | Marketers and designers needing fast production and exports and integrations with email tools |
| Key Strength | Open-source distribution and template-driven deep customization; self-host control | Strong productization, commercial roadmap, and embed-focused feature set | Ease of use, template workflow, and commercial feature breadth |
| Key Weakness | Higher implementation burden; GPL constraints; fewer documented enterprise governance features | Cost can be high for small teams embedding an editor (community anecdotes) | Vendor lock-in risk versus open-source; pricing can scale with usage |