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.
AI email clients and assistants
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 Shortwave
AI-native email client for Gmail
What they do well Best-in-class AI writing, shared inboxes, Tasklet automations, and a growing agent layer (proactive nudges, outcome-based follow-ups)
The gap No persistent task manager; automation is deepening but stays email-only, no cross-channel tasks or workflows
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 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 Spark
Cross-platform email client with AI
What they do well Fast, polished email across iOS, macOS, Android, and Windows; Smart Inbox prioritization, AI compose, shared drafts and comments for teams
The gap Email only, no task extraction, no workflow builder, no team knowledge layer
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 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 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 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 Team inboxes
Front
Shared inbox for customer communication
What they do well Excellent collaborative triage, shared assignment, internal comments, and SLAs for support and ops teams
The gap Centered on shared support inboxes; less automatic task extraction, workflow automation, and cross-channel breadth
Full comparison Missive
Collaborative team inbox with chat
What they do well Real-time internal chat beside threads, shared inboxes across accounts, and a clean multi-account client
The gap Built for replying together; no native task surface, message-to-task automation, or workflow and brain layer
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 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 AI executive assistants
Martin
Personal AI assistant by text and voice
What they do well Reaches you by phone, SMS, WhatsApp, and Slack; books, drafts, and calls people on your behalf; learns your routines
The gap A personal assistant for one person, not a team; no shared task manager, workflows, or knowledge layer
Full comparison Jared
An AI employee that lives in Slack
What they do well Proactive and context-aware, reads the room, coordinates long multi-stakeholder tasks, connects to many tools
The gap Slack-only surface; no cross-channel inbox, structured task manager, or workflow and brain layer
Full comparison Carly
Email-native AI executive assistant
What they do well Build several AI employees, 100+ integrations, email and SMS triage, scheduling, lead enrichment, and CRM work
The gap You forward, CC, or text it; email-centric and individual-first, no ambient cross-channel inbox or native team task surface
Full comparison Serif
AI executive assistant for client relationships
What they do well Drafts in your voice, tracks where each client conversation stands, pre-drafts follow-ups, meeting recorder on paid plans
The gap Email only, no team chat channels, no workflow builder, task manager and knowledge base gated to paid plans, individual-first
Full comparison Bond
AI chief of staff for executives
What they do well Cross-tool visibility, daily briefings, follow-up tracking, ranked priorities, SOC 2
The gap Oversight and briefings for one exec, not the team work surface; surfaces work but does not run your inbox
Full comparison Mira
AI COO for founders and SMEs, in Slack and WhatsApp
What they do well Chat-native (Slack, Teams, WhatsApp), progressive autonomy, BYO models, Forward Deployed Engineers, EWOR-backed
The gap No visual workflow builder by design, no Gmail/Outlook as a primary surface, no public MCP, no dedicated task surface
Full comparison Task managers
Todoist
A fast, flexible task manager
What they do well Best-in-class quick-add, projects, labels, and filters, polished cross-platform apps, and years of maturity
The gap A list you type into; no message-to-task extraction, no inbox, workflows, or knowledge layer around it
Full comparison Asana
Full-featured project management
What they do well Deep project structure, timelines, custom fields, portfolios, reporting, and scale for big teams
The gap You plan projects by hand; not comms-native, and DoBox is lighter on PM depth though it fills itself from your messages
Full comparison ClickUp
Configurable all-in-one project management
What they do well Deeply customizable: custom statuses, 15+ views (list, board, Gantt, timeline, mind maps), custom fields, dependencies, dashboards, docs, and ClickUp Brain
The gap You configure and plan projects by hand; not comms-native, and DoBox is lighter on PM depth though it fills itself from your messages
Full comparison Automation
Zapier
9,000+ app integrations
What they do well Unmatched integration breadth, mature visual builder, reliable
The gap Plumbing, not an agent: doesn't read inbox, extract tasks, or suggest automations
Full comparison Make
Visual automation platform
What they do well A huge integration catalog and deep, flexible multi-step scenarios with strong power-user control
The gap Automation you wire on a canvas; not comms-native, no inbox, tasks, or brain, and no AI reading your messages
Full comparison n8n
Source-available workflow automation
What they do well Self-hostable, deep flexibility, code-level control, a large integration library, and cost control at scale
The gap A builder's canvas for technical teams; not comms-native, no inbox, tasks, or brain, and no AI reading your messages
Full comparison Scheduling
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 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 Knowledge and meetings
Notion
Workspace, docs, databases, and Notion AI
What they do well Best-in-class docs and databases; Notion AI now runs agents, connects to Slack, Gmail, and Jira, and searches across your tools
The gap A workspace that reaches into your comms, not the inbox you work in; no native cross-channel send or message-to-task as the core job
Full comparison Otter.ai
Meeting transcripts turned into a knowledge engine
What they do well Best-in-class meeting transcription, now a conversational knowledge engine with meeting agents, at ~$100M ARR enterprise scale
The gap Knowledge from meetings and voice only, not your messages; not an inbox; no cross-channel task extraction or workflows
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 | Mira |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | Progressive autonomy |
| Calendar automation (RSVP, create, reschedule) | ✓ | ✓ | Scheduling only | Briefings only | Calendar intelligence | — | Built-in calendar | — | — | Google only | Outlook only | Via Zap | Scheduling only | — | ✓ | Connected calendar |
| 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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