Verdict
Outlook consolidates multiple email accounts and calendars into one app, and most reviewers find it easy to use, but a smaller group reports crashes, trash that won't empty, and flagged or pinned messages that don't display properly.
Best for
Someone juggling several email accounts (work and personal) who wants one inbox and calendar view on their iPhone.
Dealbreaker
Some users report the app crashing on open or becoming unusable, and flagged or pinned important messages sometimes failing to show up when filtered, which is a real risk if you depend on those messages for work.
The facts.
Pulled from the App Store, not written by hand. unverified
Price
Free
In-app purchases
Unknown
Ads
Unknown
Platforms
iPhone, iPad
Rating
4.8★ (9,240,218)
Version
5.2635.0
Last updated
Sep 8, 2026
Released
Jan 29, 2015
Attributes
Native app
Category
Productivity, Business
What reviews consistently say.
Themes grouped from 200 App Store reviews. Source feed ›
Praised for
Ease of use and design11 reviews
Import and export3 reviews
Battery and performance2 reviews
Sync and multi-device2 reviews
Complained about
Crashes and stability3 reviews
Import and export3 reviews
Confusing interface2 reviews
Where this comes from
11 of 200 recent reviews raised: Ease of use and designApp Store reviews ›
3 of 200 recent reviews raised: Import and exportApp Store reviews ›
3 of 200 recent reviews raised: Crashes and stabilityApp Store reviews ›
2 of 200 recent reviews raised: Sync and multi-deviceApp Store reviews ›
2 of 200 recent reviews raised: Confusing interfaceApp Store reviews ›
Listed at Free on the App StoreApp Store listing ›
Where we recommend it
The best email apps ›Email clients that are well rated and still maintained, with what each one gets wrong.
Alternatives with the same rule.
Every app here is rated 4.2 or better, has been updated in the last eighteen months, and has no significant number of reviewers reporting it broken. Price is not the rule on this list — some are free, some are not. Also with a catch.
Free · 4.7★ (4,812,688) · Updated Sep 11, 2026
Verdict. Yahoo Mail's reviews cluster around broken notifications, sluggish performance, and ads pushed at users who can't easily remove them. That's a rough pattern for an app whose one job is getting mail to you reliably.
Best for. Someone who already has a Yahoo email address and just wants a basic inbox app, not someone choosing an email client fresh.
Dealbreaker. Multiple recent reviewers report notifications not arriving reliably for new mail, plus ads inside the inbox that some say can't be turned off without paying.
Free · 4.8★ (3,234,267) · Updated Sep 14, 2026
Verdict. Google Docs is a straightforward word processor that syncs across devices without fuss, though a handful of users report frozen accounts, print formatting that ignores margins, and general unease about how Google handles their data.
Best for. Someone who already lives in Google's ecosystem and wants to draft resumes, letters, or notes on their phone that stay in sync with their computer.
Dealbreaker. A few reviewers report the app freezing when adding multiple accounts and copy/paste or print/export not working as expected, and some flatly distrust Google with their document data.
Free · 4.6★ (4,444,576) · Updated Dec 12, 2025
Verdict. Mail is the built-in, no-frills option for handling multiple email accounts on iPhone, but reviewers report real friction with search, sync, and notifications that a dedicated third-party client might solve better.
Best for. Someone who already uses iCloud and other accounts and just wants one built-in inbox without installing or paying for anything else.
Dealbreaker. Several reviewers report unreliable notifications (missed alerts or alerts firing with notifications off) and complain that search and account sync break down, sometimes requiring lengthy support calls to fix iCloud access.