Microsoft Outlook review

Outlook is the strongest iPhone app for anyone whose work email lives on Microsoft Exchange or Office 365, and it also handles Outlook.com, Gmail, Yahoo and iCloud. Mail and calendar share one app, so you can send your free times with a tap and find a meeting slot without switching to another app. Attachments open from OneDrive or Dropbox without downloading, and Word, Excel and PowerPoint files go straight into those apps for editing. The app is free but its App Store listing says it contains advertising; Microsoft 365 Basic at $1.99 a month or $19.99 a year gives an ad-free inbox with 100 GB of mailbox storage and 100 GB of cloud storage. Copilot features such as thread summaries and draft help need Microsoft 365 Personal or Family, which Microsoft says start at $6.99 a month in the US, or a business account with Copilot. People with only personal Gmail or iCloud addresses will find Apple Mail or Spark simpler.

Who it is for

people who use Microsoft 365 for work

Price

Free app; Microsoft 365 Basic $1.99 a month or $19.99 a year adds an ad-free inbox with 100 GB of mailbox storage.

Or buy at $1.99/month
Quoted from the vendor pricing page on November 13, 2026.

Key features

• Email and calendar in one app, with one-tap sharing of meeting availability
• Works with Exchange, Office 365, Outlook.com, Gmail, Yahoo and iCloud
• Attach files from OneDrive and Dropbox without downloading them
• Opens Word, Excel and PowerPoint attachments for editing in those apps
• Copilot can summarize long threads and draft emails on eligible plans

Strengths and weaknesses

• Strength: Calendar scheduling is built into the mail app
• Strength: Microsoft 365 Basic removes ads for $1.99 a month
• Strength: Strongest fit for Exchange and Office 365 work accounts
• Weakness: The free app shows ads, per its App Store listing
• Weakness: Copilot needs Microsoft 365 Personal or Family, which start at $6.99 a month in the US, or a Copilot-enabled business account
• Weakness: Rules cannot be set up from the iPhone app

Key facts

• Free app: Yes, with ads
• Microsoft 365 Basic: $1.99 a month or $19.99 a year
• Basic mailbox: 100 GB, ad-free
• Copilot: Personal, Family or business plans

Where it ranks

Microsoft Outlook is No. 4 in our Best Email Apps for iPhone verdict.