9 Best Task Management Apps for Outlook (2026)
If you live in Outlook, your tasks shouldn’t live somewhere you never look. The best task manager for an Outlook user is the one that sits inside your email and calendar — so flagging a message creates a task, and your to-do list shows up next to your inbox instead of in a separate app you forget to open.
Most “best task app” lists ignore this entirely and rank Gmail-first tools. Here’s the honest version for the Microsoft 365 crowd: what’s built in, what integrates deeply, and the one tool that doesn’t just track tasks but does them.
The Built-In Options (free with Microsoft 365)
1. Microsoft To Do
The default personal task app, and it’s genuinely good for Outlook users. Flagged emails flow straight into the Flagged email list, tasks sync across Outlook, the To Do app, and Windows, and My Day gives you a clean daily plan. If you want zero new logins and tight Outlook integration, start here.
Best for: individuals who want flagged emails to become tasks automatically.
2. Microsoft Planner
To Do’s team counterpart. Planner organizes shared work into boards and buckets, lives inside Teams, and now rolls up To Do, Planner, and Project into one experience. Tasks assigned to you appear in To Do, so personal and team work stay in one list.
Best for: teams already running on Teams and Microsoft 365.
3. Outlook Tasks (classic)
The original, still in classic Outlook. Drag an email onto the Tasks icon and it becomes a task with the message attached. Basic, but it’s been quietly reliable for two decades. (How to create a task in Outlook.)
Best for: classic Outlook users who want tasks without installing anything.
The Deep Integrations (third-party, Outlook add-ins)
4. Todoist
The most polished standalone task manager with a real Outlook add-in — turn an email into a Todoist task from the reading pane, with natural-language due dates (“every Monday”) and projects. It’s cross-platform, so your tasks follow you off Microsoft’s stack too. (Creating subtasks in Todoist.)
Best for: people who want a great task app that also plugs into Outlook.
5. TickTick
Todoist’s closest rival, with a built-in calendar view, habit tracking, and a Pomodoro timer. The Outlook/Microsoft 365 calendar sync means tasks and events sit side by side.
Best for: users who want tasks, habits, and a timer in one app.
6. Asana
Heavier, project-focused, with an Outlook add-in that turns emails into Asana tasks and a Teams integration for status. Overkill for a personal list; excellent for cross-functional projects. (Recurring tasks in Asana.)
Best for: teams managing projects, not just to-dos.
7. ClickUp
The “everything app” — docs, goals, and highly customizable task views, plus an Outlook add-in. Powerful, but there’s a real setup cost before it pays off.
Best for: power users who want to configure their own system.
8. Trello
Simple Kanban boards with an Outlook Power-Up to create cards from email. Light, visual, and fast to adopt for anyone who thinks in columns.
Best for: visual, board-style task tracking with minimal setup.
The One That Does the Tasks
9. Carly
Every app above is a better place to write down tasks. Carly is different: it does them. It’s an AI assistant that connects to Outlook plus 200+ other apps — including To Do, Planner, Todoist, Asana, and ClickUp — so it can turn the commitments buried in your email into tasks in whatever system you already use, and act on the ones it can: drafting the reply, scheduling the meeting, filing the attachment, sending the follow-up.
The difference matters because a task manager’s real job isn’t storage — it’s getting the work done. A flagged email in To Do is still work you have to do later. Hand it to Carly and the routine ones are handled before they reach your list. It works across Outlook and Gmail, so it doesn’t lock you into one ecosystem. Carly starts at $35/month.
Best for: Outlook users who’d rather have tasks executed than just organized.
How to Choose
| If you want… | Use |
|---|---|
| Zero setup, flagged emails as tasks | Microsoft To Do |
| Team boards inside Teams | Microsoft Planner |
| A best-in-class app with an Outlook add-in | Todoist or TickTick |
| Full project management | Asana or ClickUp |
| Visual Kanban | Trello |
| Tasks actually done, not just tracked | Carly |
For most Outlook users, the honest answer is Microsoft To Do for personal tasks and Planner for team work — they’re free, native, and good. Reach for Todoist or TickTick if you want a better app, Asana or ClickUp if you’re running projects, and Carly when the bottleneck isn’t tracking the work but doing it.
Related: Best AI tools for Outlook users · 12 AI tools for task management · How to create a task in Outlook · Best AI inbox management tools
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