Shortwave vs Mailbutler: Which AI agent is better?
Compare pricing, AI models, integrations, security posture, pros, cons, and buyer fit before choosing the right AI email management agent for your workflow.
Verdict: Shortwave vs Mailbutler
Pick Shortwave if you need team collaboration and ai summaries. Pick Mailbutler if you need crm integration and scheduling.
Mailbutler wins on price.
Shortwave supports 2 models.
Shortwave integrates with 7 platforms.
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...
- 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
- AI Summaries save time on long threads
- Tasklet automation genuinely connects email to workflows
- Smart Bundles accelerate batch processing
- Gmail-only currently, no Outlook support
- Free tier AI usage limits
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...
- 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
- CRM auto-push eliminates manual data entry
- Sentiment analysis catches tone issues before sending
- Works within familiar email clients
- Full features require Smart tier at $14.95/month
- Extension approach may have compatibility issues with email updates
Who should buy this
Shortwave
- Team that operates over shared inboxes (sales@, support@) and wants AI triage + assignment
- Founder or PM coordinating with co-workers via email needing thread summaries
- Productivity buff who wants Tasklet automations connecting Gmail to Slack/Notion/Linear
- Outlook-only orgs (Gmail-only client today)
- Buyers wanting fully-private email AI (Shortwave routes through cloud LLMs)
Solo: ~$8.50–$18/mo (Personal/Pro). Team: $24/seat/mo Business or $36/seat Premier. Heavy AI users: $100/seat Max. Enterprise: custom.
Verified 2026-05-02
Mailbutler
- Small business owner using Apple Mail / Outlook / Gmail wanting CRM-light email workflow
- Sales rep wanting per-message tracking + scheduled send + AI summaries
- Realtors / consultants who want a CRM in their email client without switching apps
- Power users with high email volume (Superhuman / Shortwave better)
- Teams already on a full CRM (Salesforce, HubSpot — Mailbutler overlaps awkwardly)
Solo: $4.95/mo Tracking, $8.95/mo Professional, $14.95/mo Smart (AI features). Team: per-seat with admin features.
Verified 2026-05-03
Capabilities at a glance
| Capability | Shortwave | Mailbutler |
|---|---|---|
| AI thread summaries | — | |
| Ghostwriter (voice-trained replies) | — | |
| Smart Bundles auto-grouping | — | |
| Tasklet automations to other tools | Slack, Calendar, Notion, Asana, HubSpot | — |
| Email provider support | Gmail-only | — |
| Team / shared inbox features | Business+ | — |
| Email tracking + read receipts | — | |
| Smart scheduling + send-later | — | |
| AI Assistant (sentiment + summary + improve) | — | Smart tier |
| CRM integration (HubSpot, Pipedrive, Salesforce) | — | Smart tier |
| Cross-client (Apple Mail, Outlook, Gmail) | — | |
| Public API | — |
Security & compliance
| Standard / control | Shortwave | Mailbutler |
|---|---|---|
| GDPR | ||
| SSO / SAML | — | |
| Trains on customer data | No | — |
What users say
Frequently asked questions
Which is cheaper, Shortwave or Mailbutler?+
Shortwave's Personal plan is $8.50/month and Mailbutler's Tracking plan is $4.95/month. Mailbutler is the cheaper entry point.
What AI models do Shortwave and Mailbutler use?+
Shortwave runs on GPT-4, Proprietary models. Mailbutler runs on Proprietary AI models.
What is the main difference between Shortwave and Mailbutler?+
Shortwave is positioned as best for team collaboration and ai summaries, while Mailbutler is positioned as best for crm integration and scheduling. Pick the one whose strength aligns with your primary use case.
Which has better integrations, Shortwave or Mailbutler?+
Shortwave integrates with Gmail, Slack, Calendar, Notion and 3 more. Mailbutler integrates with Apple Mail, Outlook, Gmail, HubSpot and 2 more.
What are the main weaknesses of Shortwave and Mailbutler?+
Shortwave's main drawback: gmail-only currently, no outlook support. Mailbutler's main drawback: full features require smart tier at $14.95/month.
Are Shortwave and Mailbutler worth it in 2026?+
Both remain competitive email management options in 2026. Shortwave stands out for ai summaries save time on long threads. Mailbutler stands out for crm auto-push eliminates manual data entry. Choose based on which trade-offs fit your workflow and budget.