Best Shortwave Alternatives in 2026, Compared

Shortwave built itself into a capable AI-native Gmail client, with fast search and smart email summaries (for the full breakdown on Shortwave itself, read our Shortwave review). The reality in 2026 is different, though: work happens across email, Slack, Microsoft Teams, and Google Chat simultaneously. A Gmail-only solution handles just one piece of a fragmented communication puzzle. Teams need tools that capture action items from every conversation, not just email threads. We’ve pulled together seven alternatives that take on the scattered communication problem, starting with this+that, the only platform that turns messages from all your communication channels into one actionable task list.

Key Takeaways

• Unified workspace beats email-only tools: this+that pulls communication tools together (email, Slack, Microsoft Teams, and Google Chat) into one feed, while Shortwave and most alternatives stay Gmail-focused
• Automatic action detection eliminates manual task entry: this+that pulls requests, decisions, follow-ups, and deadlines out of conversations on its own, saving 2-3 hours weekly per person versus creating tasks by hand
• Context-rich tasks prevent information hunting: this+that attaches the full conversation thread to every action item, so you don’t have to re-read messages to remember what was agreed
• One feed across channels catches commitments wherever they land: this+that reads requests and follow-ups from every connected channel, so the work that shows up in chat doesn’t slip past an email-only tool

1. this+that: The Complete Communication-to-Action Platform

this+that is the only tool built to solve the root problem: work hiding in conversations across every platform your team uses. Competitors optimize email; this+that turns scattered communication into a unified inbox of actionable tasks.

Key Features:

• Native integration with Gmail, Outlook, Slack, Microsoft Teams, Google Chat, and Telegram
• Automatic action detection identifying requests, decisions, follow-ups, and deadlines without manual input
• Context-rich task management attaching full conversation threads to every action item
• Cross-tool search spanning all connected communication sources
• Workflow automation that turns a detected action item into a drafted reply, a routed task, or a team notification
• Mobile apps for iOS and Android

The platform takes on what productivity research calls the “manual tax” of knowledge work. Professionals spend a lot of their time on “work about work” instead of skilled tasks. this+that clears that overhead away by surfacing action items from every conversation automatically.

For teams running several communication tools, this+that’s integration architecture gives you a single source of truth. An engineering lead can track sprint items from Jira discussions in Slack. Sales teams catch inbound leads that come up across email and Teams. Operations heads route approval requests wherever they started.

The DoBox feature works as an AI-fed task manager that fills up automatically with action items pulled from your connected channels. Traditional task managers make you enter everything by hand; DoBox creates a task the moment a commitment shows up in your communications.

2. Superhuman

Superhuman holds its spot as the fastest keyboard-driven email experience around, aimed at professionals who put email velocity above all else.

Key Features

• Extensive keyboard shortcuts optimized for speed: A deep set of hotkey combinations lets users process email without touching the mouse, cutting way down on the time it takes to triage, reply, and archive once the workflows become muscle memory.
• AI triage and automated email categorization: Smart algorithms sort incoming messages into priority levels and categories on their own, so there’s less manual sorting and the important email surfaces first while less urgent items get grouped for batch processing.
• Auto Drafts generating AI-written reply suggestions: The system reads the email context and writes a response draft to match, so users can send a reply with light editing or use the suggestion as a starting point for something longer.
• Read receipts and email tracking: Built-in tracking shows you when recipients open your email and click links, so you get visibility into engagement without bolting on an external tracker or browser extension.
• Split inbox organization: Messages get split automatically into separate views for important email, newsletters, and other categories, so you can focus on the high-priority stuff first and batch the rest for later.
• 1-on-1 onboarding with Superhuman team: Personal training sessions walk new users through the advanced keyboard workflows and help them tune their email processing with one-on-one coaching.
• Gmail and Outlook support: Where some email clients lock you into a single provider, Superhuman works with both of the major platforms, so you can manage accounts from either service in one interface.

Best For

Superhuman suits email power users who measure productivity in messages processed per minute and whose work lives entirely inside email. It tends to fit workflows where raw processing speed through a keyboard-driven interface is the main thing being measured.

3. Spark Mail

Spark Mail has earned a reputation for smooth cross-platform support, running across Mac, Windows, iOS, and Android with consistent functionality.

Key Features

• Support for Gmail, Outlook, Yahoo, iCloud, and IMAP accounts: It works with just about any email provider, so users can run nearly any account from one interface instead of juggling multiple email clients across different services.
• Smart inbox sorting and categorization: Automatic classification separates personal email, notifications, newsletters, and pinned items into their own sections, which cuts inbox clutter and lets users focus on the messages that need attention now.
• Team collaboration features including shared drafts and email delegation: Several teammates can draft an important email together in real time, and delegation lets a manager assign incoming messages to the right person to handle the reply.
• AI-powered email summaries (with monthly quotas): The AI boils long threads and messages down into short summaries so users can grasp the content without reading the whole conversation, though how much you can summarize is capped by a monthly allowance.
• Cross-device synchronization: Every action, read state, and folder change syncs instantly across devices, so the inbox looks the same whether you open it on desktop, tablet, or phone.
• Calendar integration: Built-in calendar views and event creation from email content tie scheduling right into your email conversations, so you switch less between separate calendar apps.

Best For

Spark Mail suits individuals and small teams trying out AI-enhanced email management who want cross-platform flexibility and a budget-conscious option. It tends to fit teams that collaborate on email and need to work across several devices and email providers.

4. SaneBox

SaneBox goes a different route. It’s an add-on service that works with any existing email client instead of replacing it.

Key Features

• Intelligent email filtering and prioritization: Machine learning reads your email patterns and behavior to tell the important messages from the lower-priority ones, shifting the less urgent email into designated folders so your main inbox stays focused on what matters.
• Works with any email client and provider: The service runs as backend infrastructure, so it works whether you read email through Apple Mail, Outlook, the Gmail web interface, or anything else, and you get the filtering without changing software.
• SaneLater folder for non-urgent messages: Email it judges to be less time-sensitive moves into a separate folder for later, which keeps the inbox clear while making sure nothing gets deleted or lost.
• SaneBlackHole for permanent unsubscribes: Drag an unwanted email into this folder to block the sender for good, and SaneBox filters out future messages from that source so you skip the manual unsubscribe.
• Do Not Disturb scheduling: You can set time windows that keep new email out of the inbox during focus hours or off-work time, holding the messages in a separate folder until the quiet period ends.
• Snooze functionality: You can pull an email out of view and have it come back to the inbox at a set time later, handy for messages that need action but not right now.

Best For

SaneBox suits people who want to keep their current email client and add smart filtering on top. It tends to fit users who just need better inbox organization without changing how they already read and reply to email.

5. alfred_

alfred_ pitches itself as an AI email secretary that handles email management more autonomously than a traditional email client.

Key Features

• Gmail and Outlook support: It connects to both of the major email providers, so users can run accounts from either service and get AI assistance no matter which provider they’re on.
• Autonomous email processing and organization: The system categorizes, prioritizes, and organizes incoming messages on its own with little user input, making judgment calls about importance and handling from the patterns it has learned.
• Calendar integration for scheduling: Built-in calendar features tie email discussions to scheduled events, spotting scheduling requests in messages and helping you set up a meeting straight from the email.
• AI-powered reply drafting: The AI reads incoming messages and suggests a fitting response, cutting the time it takes to write a reply while keeping the tone and content appropriate.
• Daily briefing summaries: Automated reports gather the most important email and action items from the day before or the schedule ahead, giving users a high-level view without combing through the inbox by hand.
• Mobile apps for iOS and Android: Native apps on both major mobile platforms let users reach the AI secretary features and answer important email from any device, anywhere.

Best For

alfred_ suits professionals carrying heavy email loads who want autonomous processing with little hands-on work. It tends to fit users who’d rather let AI run the routine email and only get pulled in for the items that actually need a human decision.

6. Unboxd

Unboxd zeroes in on pulling action items out of email at an accessible price point.

Key Features

• Automatic categorization into Actions, Highlights, and FYIs: Machine learning reads each email and sorts it by whether it needs you to act, holds something worth noting, or is purely informational, which takes some of the mental load out of a cluttered inbox.
• Daily briefing emails summarizing important items: An automated digest gathers the day’s most critical actions and highlights into a single summary email, so you can batch your priorities instead of watching the inbox all day.
• Support for Gmail, Outlook, and IMAP accounts: It works with a wide range of email providers, so people on different services can still use the action extraction whatever platform they’re on.
• Action item detection from email content: Natural language processing finds the requests, commitments, deadlines, and tasks buried in your email and surfaces the ones that need follow-up without you tagging or flagging anything.
• Context attached to extracted tasks: Each action item comes with the surrounding conversation and excerpts from the original message, so you don’t have to go back to the full thread to recall what was asked or agreed.
• Mobile apps available: Native apps for phones and tablets let you review extracted actions and the daily briefing from any device, so you keep moving when you’re away from a desktop.

Best For

Unboxd suits people whose work mostly happens in email and who want task detection without premium pricing. It tends to fit professionals who’d rather batch their work through a daily briefing than watch email in real time.

7. Notion AI

Notion AI adds AI capabilities to the popular workspace platform, though it approaches email differently than a dedicated email client.

Key Features

• AI writing assistance within Notion documents: Built-in AI helps users draft, edit, and sharpen text right inside Notion pages, suggesting changes to tone, clarity, and structure without leaving the workspace.
• Summarization of meeting notes and documents: It can boil long meeting transcripts, project documents, and research down into short summaries, so teams catch the key points without reading everything.
• Database automation and organization: AI features categorize, tag, and organize database entries from the content itself, which cuts down on manual data wrangling and keeps the structure consistent.
• Integration with various third-party tools: Connections to outside services let Notion bring in data and functionality from other platforms, building a broader workspace that bridges several business tools.
• Collaborative workspace features: Real-time co-editing, commenting, and sharing let teams work together on documents, databases, and projects in one place, with version history and change tracking kept along the way.
• Cross-platform availability: Apps for desktop, web, and mobile let users reach their Notion workspace and AI features from any device, anywhere, so work keeps moving across environments.

Best For

Notion AI suits teams that already run Notion as their central workspace and want a boost on document creation and meeting-note summaries. It tends to fit teams that forward email into Notion or use Notion as their task hub, though that means forwarding email by hand rather than connecting automatically.

Getting Started with this+that

this+that is free during early access, with no credit card needed to use the full platform. The signup process connects your existing communication accounts without migrating data or changing how you already work.

Setup takes under an hour to connect your accounts and see your first automatically extracted actions.

For teams ready to move past email-only solutions, this+that takes the “work hiding in conversations” problem and solves it. Messages go in, actions come out, and nothing slips through the cracks. For a feature-by-feature look, compare Shortwave and this+that.

Frequently Asked Questions

What makes modern communication platforms better than email-only alternatives to Shortwave?

Modern work happens across multiple channels at once. Research indicates professionals use six or more communication tools daily, with commitments showing up in Slack threads, Teams messages, meeting discussions, and email. Email-only tools like Shortwave cover roughly 60% of communication and miss the action items in the rest. Platforms like this+that that pull every channel into one actionable feed catch commitments wherever they started.

How does AI-powered task management differ from traditional task managers?

Traditional task managers want manual entry for every action item. You have to read the conversation, spot the commitment, and create the task yourself. AI-powered task management pulls requests, decisions, follow-ups, and deadlines out of conversations on its own, creating a task the moment a commitment appears. That saves 2-3 hours weekly per person and catches items a manual review might miss.

Can these new tools integrate with existing business applications?

Integration capabilities vary a lot across alternatives. this+that has native connections to Gmail, Outlook, Slack, Microsoft Teams, Google Chat, and Telegram through one architecture. Spark Mail handles several email providers but not collaboration platforms. SaneBox works with any email client as a background service. Most alternatives stay email-focused and never reach into the wider set of tools where modern work happens.

Is this+that truly free to try?

Yes. this+that is free during early access, with every feature included. You don’t need a credit card to connect your communication accounts and see automatic action detection at work. It connects to your existing accounts without migrating data, so trying it out is low-risk.