Shortwave vs Mailbutler
A detailed side-by-side comparison to help you choose the right AI email management agent for your needs.
Best for team collaboration and AI summaries
Shortwave
Shortwave reimagines email as a collaborative workspace with Ghostwriter that learns your unique writing voice and style to generate contextual responses. AI Summaries appear at thread tops, condensin...
AI Models
GPT-4Proprietary models
Key Features
- Ghostwriter learns your writing voice for contextual responses
- AI Summaries at thread tops condense conversations
- Smart Bundles group related emails, 45% faster inbox zero
- Tasklet automation: Slack, Calendar, Notion, Asana, HubSpot via plain English
- Built-in calendar with AI scheduling and conflict checking
Pricing
Free — $0
Personal — $8.50/month
Pro — $18/month
Business — $24/user/month
Pros
- AI Summaries save time on long threads
- Tasklet automation genuinely connects email to workflows
- Smart Bundles accelerate batch processing
Cons
- Gmail-only currently, no Outlook support
- Free tier AI usage limits
Best for CRM integration and scheduling
Mailbutler
Mailbutler extends Apple Mail, Outlook, and Gmail with professional productivity features and AI assistance. Smart scheduling analyzes recipient open patterns to send emails at optimal times for maxim...
AI Models
Proprietary AI models
Key Features
- Extension for Apple Mail, Outlook, Gmail
- Smart scheduling for optimal send times
- CRM integration: auto-push to HubSpot and Salesforce
- Notes and task tracking on email threads
- AI writing assistant: spelling, grammar, tone
Pricing
Tracking — $4.95/month
Professional — $8.95/month
Smart — $14.95/month
Pros
- CRM auto-push eliminates manual data entry
- Sentiment analysis catches tone issues before sending
- Works within familiar email clients
Cons
- Full features require Smart tier at $14.95/month
- Extension approach may have compatibility issues with email updates