Get SpreadJoy running on your Mac in under 2 minutes.
Double-click the DMG file and drag SpreadJoy to your Applications folder.
⚠️ "Cannot be opened" message?
Right-click the app and select "Open", then click "Open" again in the dialog. You only need to do this once.
When prompted, allow SpreadJoy to access:
You're all set! Select contacts, write your message (or let AI help), and send personalized messages to everyone.
Choose the contacts you want to message. Use groups or select individuals. Your contacts are imported from the macOS Contacts app.
Type your message using personalization variables:
{{name}} - Recipient's first name{{full_name}} - Full namePro tip: Use AI to generate unique, personalized messages for each contact!
Preview how messages will look for each contact, then send them all at once. Messages are sent via your Mac's Messages app.
Generate unique, personalized messages for each contact using Claude, GPT-4, or Gemini. Bring your own API key.
Attach photos to your messages. Perfect for sharing memories with friends and family.
Upload photos and AI will create personalized cards with clever headlines and custom designs.
Schedule birthday and anniversary messages. Never forget an important date again.
SpreadJoy is designed with privacy-first principles. We have zero access to your data.
All data stays on your Mac. Nothing is uploaded to our servers.
Contacts, messages, and photos never leave your device.
We don't track what you type or who you message.
AI keys are stored locally in macOS Keychain, encrypted by Apple.
Messages are sent directly through Apple's Messages app on your Mac using native macOS automation. SpreadJoy never sees the actual message content—it just tells Messages what to send.
If you use AI features, your API keys are stored in the macOS Keychain—the same encrypted vault that stores your passwords. We never transmit or store your keys on our servers.
When using AI generation, your prompts go directly from your Mac to your chosen AI provider (Anthropic, OpenAI, or Google). We're not a middleman—your API key means your data goes straight to the source, encrypted via HTTPS/TLS.
Only anonymous, non-personal data for app functionality:
We never collect: contacts, messages, photos, API keys, or any content you create.
API keys are stored in macOS Keychain using AES-256-GCM encryption, protected by your Mac's Secure Enclave.
All API calls to AI providers use TLS 1.3 encryption. Certificate pinning prevents man-in-the-middle attacks.
SpreadJoy runs in Apple's App Sandbox, limiting access to only the permissions you explicitly grant.
The app is code-signed with an Apple Developer certificate and notarized by Apple, ensuring it hasn't been tampered with.
We don't operate servers that store your data. There's no database to breach because your data never leaves your Mac.
App preferences stored in ~/Library/Preferences using macOS property lists. No sync, no cloud.
Right-click the app and select "Open". In the dialog, click "Open" again. This is a one-time step for apps downloaded outside the App Store.
We're here to help!
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