Microsoft Outlook review: one free inbox for every account, with the AI behind a subscription

Too many inboxes, one phone

Microsoft Outlook is an email and calendar app for Android. It's built for anyone whose day is split across several accounts: a work Exchange mailbox, a personal Gmail, an old Yahoo address that still gets the bank statements, and a calendar or two for each. Instead of giving each account its own app and its own notification badge, Outlook pulls them all into a single inbox and lays the calendars next to each other.

Microsoft's answer is consolidation. Mail, contacts, attachments and your schedule all live in one place, so a meeting invite, the file it refers to and the call link that starts it can be handled without leaving the app. That's a familiar pitch in this category. What makes it count here is how many account types it accepts, and that the core of it costs nothing for personal use. The app has more than 1,000,000,000 installs on Play, which shows how many phones it already runs on.

Every account under one roof

The list of supported services covers nearly everyone. On Microsoft's side, it handles Exchange, Microsoft 365, and the Outlook.com family (including Hotmail, MSN and Live addresses). Outside Microsoft, it takes Gmail, Yahoo Mail and iCloud, plus generic IMAP and POP3 for anything else. In practice, if you have an email address, Outlook can probably carry it, and that breadth is the main reason to choose it over a provider's own app.

Sorting happens with swipes. You can delete, archive, snooze or move a message with a flick, and you choose which gesture does what. Pinning keeps important messages from sinking. Flags mark the ones that still need an answer. Threading folds a long back-and-forth into one conversation, while filters, folders and spam protection deal with the rest. You can search by typing or by voice, and the developer says voice search reaches people, events and files as well as messages.

Writing gets some help too. Spelling and grammar checks run as you compose, along with typing suggestions and suggested replies for quick answers. There's also Play My Emails, which reads your messages aloud so you can get through the inbox while driving or walking.

Calendars, meetings and the stuff in between

The calendar is part of the app, not a separate download. You can view several calendars side by side, which helps when work and home schedules collide. From an invitation you can RSVP and add notes, and tasks and reminders cover the jobs that don't need a time slot. If your week already runs on Google Calendar, Outlook can show those events next to your work calendar instead of making you switch apps.

Meetings join from the event itself, and the developer names both Teams and Zoom, so the app doesn't push you toward Microsoft's own calling service. Outlook also adds travel and delivery updates to your calendar automatically, which means a flight confirmation or a package notice turns into an entry without any copying.

Files round it out. You can attach documents from OneDrive, from the phone or from other cloud storage, and recent attachments are collected so you don't have to dig through old threads. Word, Excel and PowerPoint files open straight from the inbox, and the app links to OneNote. For someone who already uses Word and OneDrive, this keeps the whole loop of receiving, opening and replying inside Microsoft's apps.

Where the bill shows up

The free tier is a real email client, not a trial. Every account type, the shared inbox, the calendars, the swipe sorting, meeting joins and Office file handling are all offered for personal use at no cost. That's a generous base, and most readers could use Outlook for years without paying for anything.

The paid parts sit on top of that base. Copilot, Microsoft's AI assistant, can condense a long thread into its main points, draft a reply with a suggested tone, and offer scheduling suggestions and reminders. All of that requires a qualifying subscription, which Microsoft sells as covering Outlook and Microsoft 365 on phone, tablet, PC and Mac. Encrypting sensitive messages also requires Microsoft 365. Neither is essential for everyday mail, but anyone who installs it mainly for the AI features is signing up for a recurring charge, not a free app.

What it asks of you in return

Outlook is a big app by design. It does mail, contacts, calendars, tasks, files and meeting joins together. If all you want is a quick way to read one Gmail account, that's more machinery than the job needs, and the provider's own app or a simpler client may suit you better. The single inbox only pays off if you actually have several accounts or a work calendar to keep track of.

It also leans toward Microsoft's world. The protection it advertises against phishing, viruses and spam is described in enterprise terms. Attachments come from OneDrive first, and the paid extras are tied to Microsoft 365. None of this locks you in, since Gmail and iCloud users get the same free features. Still, the app gives the most to people already using Microsoft's services, and anyone keeping their distance from that ecosystem will be reminded of it now and then.

Wear OS owners get something extra: a companion app with an Up Next tile for the next meeting and watch-face complications that show the inbox and calendar at a glance.

Who should install it

Outlook is easy to recommend to anyone managing more than one mailbox, and especially to anyone with a work Exchange or Microsoft 365 account next to personal ones. It's free for personal use, it supports nearly every provider, and it puts the calendar and meeting links in the same place as the invitations, which makes it a lot of app for nothing. The score stops short of the top because the newest features, Copilot's summaries and drafting, cost a subscription, and so does encryption.

Skip it if you live in one Gmail account and want a light reader, or if you'd rather keep mail and calendar in separate apps. For everyone else juggling several accounts and a busy week, it's a sensible default that doesn't charge for the basics.