Missive

Canary Mail

Canary Mail is an email client that brings multiple email accounts into a single unified inbox while layering in AI features like an email writing assistant, thread summarization, and automatic categorization. It also focuses on security with PGP end-to-end encryption and phishing protection built directly into the app.

Spike

Spike is an email client that redesigns the inbox as a conversational, chat-style interface while remaining fully compatible with standard email (IMAP/Gmail/Outlook and other providers). It layers in AI features such as smart inbox prioritization, email summaries, and context-aware draft writing, alongside productivity tools like task tracking, calendar integration, snooze, voice messages, and unified search across accounts.

Shortwave

Shortwave is an AI-powered email client built by former Google engineers that layers natural-language automation on top of email. Users can ask it to organize their inbox, draft messages in their own voice, search across past mail, and schedule meetings, all through plain-language prompts rather than manual filters. Beyond individual productivity, Shortwave includes team features such as shared threads, comments and assignments, plus integrations with Slack, Notion, Asana and HubSpot. It is used by teams at companies including Twilio, Spotify and GitHub, and runs on Mac, Windows, iOS and Android in addition to the web.

Spark Mail

Spark Mail is an email client designed to simplify email management with AI-assisted email writing and smart inbox prioritization. It offers shared team inboxes for collaborative email management, making it an ideal solution for teams and individuals looking to streamline their email workflow.

Mailbird

Mailbird is a desktop email client that consolidates Gmail, Outlook, Yahoo, iCloud, Exchange and any IMAP/SMTP account into a single unified inbox. It layers on productivity features like email tracking, a built-in AI writing assistant, one-click unsubscribe, and integrations with apps such as Slack, Google Calendar, Dropbox and Asana without leaving the inbox. The app is built around a customizable interface, with theming, keyboard shortcuts and layout options, and claims around 4.4 million users. It ships as a one-account free version alongside a paid Premium tier that unlocks unlimited accounts and the full integration set, sold as either a one-time lifetime purchase or an annual subscription.

MindMeister

MindMeister is a cloud-based mind-mapping tool from Meister that lets individuals and teams brainstorm, take notes, and plan projects visually in real time. Maps support unlimited collaborators even on the free plan, along with templates, a focus mode for distraction-free editing, and a built-in presentation mode that turns a mind map directly into a slideshow. Paid tiers unlock unlimited mind maps, version history, private maps, custom branding, and integrations with Google Workspace and Microsoft Teams, plus MeisterTask integration for turning map branches into actionable project tasks. Native iOS and Android apps let users capture and edit ideas on the go, making MindMeister a popular choice for beginners who want a simple, guided introduction to visual brainstorming.