Managing messages is not finishing work
Most AI email tools help you move through your inbox faster. this+that reads your messages and handles what comes next — tasks extracted, workflows run, your team kept in sync.
Choose a comparison
Each page goes deep on what each tool does well and where this+that takes a different approach.
Superhuman
The fastest email client
What they do well Sub-100ms keyboard-driven speed, beautiful polish, excellent AI drafting
The gap No task extraction, no workflow automation, email only
Full comparison Fyxer
AI draft replies and meeting notes
What they do well Learns your voice from past emails, solid meeting note-taking
The gap Individual tool only, no workflows, no team features, no task extraction
Full comparison Slashy
AI-native email client for Gmail
What they do well Voice-trained drafting, self-improving memory, read tracking, SOC 2 Type II
The gap Gmail only (no Outlook yet), no Teams or Google Chat, individual-oriented, no team task assignment
Full comparison Upstream
AI-native inbox for humans and agents
What they do well Beautiful Gmail-first inbox, voice-matched drafting, inline team context, MCP-first, YC + Xavier Niel backed
The gap Gmail only at launch, no Slack / Teams / Telegram, no workflow builder, no team knowledge layer
Full comparison Inbox Zero
Open-source AI email assistant
What they do well Open source (AGPL, 9k+ GitHub stars), self-hostable free, Gmail + Outlook, Slack + Telegram, clean email triage
The gap No real task model, no workflow builder, lighter knowledge base, no Google Chat, no MCP first-class
Full comparison Kinso
Unified inbox across channels
What they do well Broadest channel support (LinkedIn, WhatsApp, Instagram, and more), AI draft replies
The gap Aggregates messages, limited automation depth — no tasks, no visual workflow builder
Full comparison Gmail AI
AI features built into Gmail
What they do well Zero-cost, 2B+ users, tight Calendar/Drive integration
The gap Email-only layer, no persistent tasks, no workflows beyond Google apps
Full comparison Outlook Copilot
AI across Microsoft 365
What they do well Deep M365 integration, Copilot Cowork preview, task extraction to Planner
The gap Microsoft-only ecosystem, expensive per-user pricing, no MCP
Full comparison Zapier
9,000+ app integrations
What they do well Unmatched integration breadth, mature visual builder, reliable
The gap Plumbing not agent — doesn't read inbox, extract tasks, or suggest automations
Full comparison Shortwave
AI-native email client for Gmail
What they do well Best-in-class AI writing, shared inboxes, Tasklet automations
The gap No persistent task manager, limited automation depth
Full comparison Jace AI
AI email assistant that drafts and organizes
What they do well Learns your writing style, contextual drafts with calendar/Slack/attachment awareness
The gap Individual tool, simple automations, no visual workflow builder
Full comparison Motion
AI calendar and project manager
What they do well Best-in-class auto-scheduling, AI project management, built-in meeting notes
The gap Calendar-first — does not read your inbox or extract tasks automatically
Full comparison Calendly
The mature single-purpose scheduling tool
What they do well Round-robin, collective events, routing forms, embedded widgets, mature CRM and meeting integrations
The gap Scheduling only — no calendar UI of its own, no inbox, no task extraction, no workflow automation
Full comparison alfred_
AI executive assistant for email and calendar
What they do well Polished email triage, follow-up tracking, calendar-aware drafts, task extraction from email
The gap Email only, no Slack/Teams, no workflow automation, individual tool with no team features
Full comparison InboxAgents
Unified inbox with AI agents across 12+ channels
What they do well Broadest channel coverage (Gmail, Slack, WhatsApp, LinkedIn, Instagram, Discord, and more), pattern-learning agents
The gap No persistent task manager, no visual workflow builder, no MCP, limited team features
Full comparison Adjacent categories
Looking at general-purpose AI?
Different category, worth knowing how it compares. Wave 1 is the general-purpose chat you go to and ask. Wave 1.5 is the polished personal agent built on top of chat. this+that is Wave 2: the AI reads the messages your team already receives.
Wave 1 — General-purpose chat
Claude
Anthropic's general-purpose AI. Claude Code, Cowork, Memory, Projects.
Full comparison ChatGPT
OpenAI's flagship. ChatGPT Agent, Atlas, Apps, Tasks, Memory.
Full comparison Gemini
Google's flagship. Gemini Live, Jules, Deep Research, NotebookLM, Workspace.
Full comparison Copilot
Microsoft's flagship. M365 integration, Copilot Cowork, Scout (preview), and a multi-model strategy (MAI, Anthropic, OpenAI).
Full comparison Wave 1.5 — Polished personal agents on top of chat
OpenClaw
Open-source, self-hosted, runs in every chat app you already use. Dominant Wave 1.5 player.
Full comparison Town
Polished personal agent with routines, three approval modes, and a Memory Profile.
Full comparison Lindy
Horizontal agent platform with hundreds of integrations and the Gaia voice agent.
Full comparison Manus
General agent across web, desktop, browser, and cloud. Memory plus Scheduled Tasks 2.0.
Full comparison Feature comparison
What each tool actually does
Every tool below helps with messages in some way. The real difference is what happens after the message arrives.
| Capability | this+that | Slashy | Upstream | Inbox Zero | alfred_ | InboxAgents | Superhuman | Fyxer | Kinso | Gmail AI | Outlook Copilot | Zapier | Shortwave | Jace AI | Motion |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Core AI | |||||||||||||||
| Inbox categorization / labeling | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — | ✓ | ✓ | — |
| Auto-extract tasks from messages | ✓ | ✓ | Inline in threads | Triage + reply queue | ✓ | Auto-routing | — | — | — | Gemini | Planner only | — | — | ✓ | From forwarded emails |
| Workflow automation | |||||||||||||||
| AI decision-making in workflows | ✓ | AI automations | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Calendar automation (RSVP, create, reschedule) | ✓ | ✓ | Scheduling only | Briefings only | Calendar intelligence | — | Built-in calendar | — | — | Google only | Outlook only | Via Zap | Scheduling only | — | ✓ |
| Calendar | |||||||||||||||
| Public booking pages | ✓ | — | — | — | — | — | ✓ | — | — | Google Appointment schedules | Outlook Bookings | — | — | — | ✓ |
| Team availability lookups | ✓ | — | — | — | — | — | ✓ | — | — | Find a time | Scheduling assistant | — | — | — | ✓ |
| Calendar steps inside workflows | ✓ | — | — | — | — | — | — | — | — | — | — | Via Zap | — | — | — |
| Team capabilities | |||||||||||||||
| Team visibility (shared task view) | ✓ | — | Shared inbox context | Team analytics | — | — | Shared conversations | — | — | — | Planner | — | Shared threads + assignments | — | ✓ |
| Channels | |||||||||||||||
| Slack + Teams | ✓ | Slack only | — | Slack live, Teams soon | — | ✓ | Slack only | Meeting context | Slack only | — | Teams only | Trigger only | — | — | Forward only |
| LinkedIn / WhatsApp / Instagram | — | — | — | — | — | ✓ | — | — | ✓ | — | — | Trigger only | — | — | — |
| Integrations | |||||||||||||||
| GitHub / Jira / Notion | Via MCP | — | Via MCP | — | — | — | — | — | — | — | — | ✓ | Notion via Tasklet | Via MCP (Pro) | Via Zapier |
| Connect any tool (open MCP) | ✓ | ✓ | ✓ | — | — | — | — | — | — | — | — | MCP server (30K+ actions) | — | Pro plan | — |
| Notable features | |||||||||||||||
| Keyboard-first speed UX | ✓ | ✓ | ✓ | — | — | — | ✓ | — | — | — | — | — | — | — | — |
| Send timing optimization | — | — | — | — | — | — | ✓ | — | — | — | — | — | — | — | — |
| Cross-channel topic stitching | ✓ | — | — | — | — | — | — | — | ✓ | Google only | M365 only | — | — | — | — |
| AI writing trained on your voice | ✓ | ✓ | ✓ | ✓ | ✓ | — | ✓ | ✓ | — | — | — | — | ✓ | ✓ | — |
Competitor information is based on publicly available product documentation as of June 2026. Features change. If something looks wrong, let us know.
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