Microsoft Outlook

The best third-party email app for iOS

Microsoft Outlook


Email apps are highly personal. Everyone manages their email differently. For some, it’s a to-do list. For others, it’s a temporary holding place until emails are processed into a task management system. One thing is for sure: everyone with an iOS device probably uses email.

After looking at the wide range of third-party apps, Outlook is the most polished, and it’s the one we recommend as your first choice when moving away from the built-in iOS client.

With a focused inbox option, snooze options, a built-in calendar, and a wide range of support for various email systems, it’s simply the best.

Free Productivity Guide: Download our simple guide to productivity to help you improve your workflows and be more focused with your time and attention. Get it here.

History

Email apps are a funny thing in reality. Like web browsers, we’ve been using them forever, but an email client in 2016 looks nothing like an email client in 1999. The technology might be the same, but the experience is a lot different. I have an interesting history with email, and it’s probably similar to many of you. My first email address was an AOL account when I was in middle school. I used that until I moved onto a Comcast.net account when we upgraded to broadband in 2001.

I used that until 2003, when I switched to a company called Mailblocks. They were purchased by AOL for their at-the-time innovative spam technology. I then migrated to Gmail (1 GB!!!) where I stayed until largely moving to .Mac/MobileMe/iCloud in 2007. One thing is common among my history: I used webmail until moving to .Mac for personal email.

I bet a lot of OS X and iOS users have a similar history. We didn’t start using a local mail client until moving to Mac and/or iOS. While web-based mail users are common on the desktop, I don’t really know anyone who uses Safari to access their email on iOS. Email apps have many features that Mobile Safari doesn’t, such as push notifications and integration with the system share sheet.

Survey

A lot of our app picks aren’t used by everyone. Not everyone uses a VPN app, delivery tracker, or a run tracker. Email, on the other hand, is used by just about everyone. As such, there are many opinions on email services, apps, and processing methods.

With that being said, we decided to do something we haven’t done before. We asked our readers to fill out a survey on what they wanted in a third party email app. The results were incredibility interesting to see. These were the most common features readers look for when shopping for an iOS mail app:

  • Design
  • Support for multiple account types
  • Universal support for the iPhone and iPad

The Case for Mail.app

Prior to iOS 9, this would have been a very different article. Mail.app on iOS has gotten a lot better. In fact, the main thing missing is support for the share sheet (with the actual message contents) and support for snoozing messages. A lot of the people who took our survey simply didn’t use a third-party app. With the inability to change the default client in iOS, a case can be made that Mail.app is the best email client for iOS. The fundamentals of email are all the same: Compose, send, read, reply, and organize. Third-party apps make themselves must have with details.

Criteria

When looking at email apps, we looked at design, ease of use, account support (Gmail, iCloud, Exchange, Office365, Yahoo, IMAP, etc.), Apple Watch support, push notifications, universal device support, integration with other apps, and whether it offers a snooze feature. While not everyone needs all of these features, we felt like this was a good guide to help us as we examined the market.

The Winner: Outlook

Outlook hero

After much debate and testing, Outlook for iOS was chosen as the best third-party email app for iOS.

A few years ago, I’d never have guessed that Microsoft would make an iOS app that I considered the best in any category. Outlook for iOS is not necessarily a new product, but rather a rebranded one. The original name was Acompli, but Microsoft purchased it in 2014 and has been hard at work with updates.

The question is, what makes Outlook for iOS the best?

Outlook’s design is very clean, but still unique. That’s fine; I’m not looking for something to mimic Mail.app exactly. Do I want it to be a complete departure from the normal look and feel of iOS? No, but I want a unique experience.

Outlook has 5 icons across the bottom: Mail, Calendars, Files, People, and Settings. The way it’s laid out makes it feel like a complete communications/file management ecosystem. You are only one tap away from getting what you need. It uses a light theme, with black and blue text throughout. I know some people like darker themes, but I feel like the design is very easy on the eyes. I don’t ever feel like the UI is distracting; it melts away and allows me to focus on what I need to see.

From a usability perspective, Outlook really shines. It provides me with just enough options to make it my own, but not so many that I am overwhelmed or spend time tinkering.

Outlook calendar

I love the built-in calendar function. While I wouldn’t say it’s better than Fantastical 2, I’d probably give it the nod over the standard iOS calendar. I love being able to see email and my schedule within one app. The compose screen is simple to use as well. It allows me to change which account I am sending from, add files, photos, send calendar invites, or see my calendar availability (a feature from its acquisition of the Sunrise Calendar app).

Outlook compose screen

One important aspect of all third party email apps is which types of email services does it support. Outlook supports Office 365, Outlook.com, Exchange, Yahoo, iCloud, Google, and IMAP. (POP3 isn’t supported, so if you require it, you need to look elsewhere.)

Outlook supported email accounts

Outlook has support for iPhone 6s/6s Plus with 3D touch features. From the 3D touch menu, you can hop right to your calendar, create a new event, or start a new email. I find myself using the View Calendar function frequently. A Notification Center widget and watchOS app are included as well.

Outlook supports push notifications for new emails, or just “important ones” with a feature Outlook calls Focused Inbox.

Focused Inbox presorts your email so you see the important ones first. It does this by considering past emails with a particular sender and your address book. You can also reclassify emails as you go in order to help train it. The calendar feature can also notify you of upcoming appointments as well as send short emails letting the people in your meeting know you are running late.

The snooze/delay function of email was made popular by Mailbox, but has since become adopted by a handful of other apps. Outlook offers a feature that I love for snoozing that allows you to control which folder your “snoozed” emails are stored. Your options for snoozing are in a few hours, this evening, tomorrow morning, or a custom time. Outlook doesn’t offer the ability to customize these times, and I’d like to see that added in the future.

Like I mentioned earlier, I love the fact that Outlook has a built-in calendar. It also has native support for a number of file systems. It includes OneDrive, Dropbox, Box, and Google Drive. While this isn’t as important for attaching files (due to document providers), it does offer some advantages. There is a file screen that shows your most recent files for cloud document apps, as well as making saving attachments faster.

Outlook file systems

Overall, Outlook is a great Mail.app replacement. I tried it originally, but went back to Mail.app with iOS 9. With the recent updates, Outlook is a great alternative. I like it so much, that I purchased an Office 365 home subscription so I can use Outlook 2016 on my Mac. While it lacks a lot of the features, it appears some of the Acompli team is now working on adding features from iOS to the Mac.

Runner Up

Spark from Readdle came out in 2015 to much fanfare. Readdle is one of the most well-respected iOS developers in the App Store. Scanner Pro and PDF Expert are some of the best apps in their respective categories. Spark seemed to come out of nowhere. It didn’t seem like a category that Readdle would enter. After a semi-public beta period, Spark was released in May.

Spark is a close second in the third-party iOS email category. For me, though, some small things keep Outlook in front.

From a design perspective, Spark is heavy on blue. I’ve never been a dark theme person; anytime I have can have white background with black text, I’m happy. The actual emails are on a white background, but I’d prefer this to be app-wide. The design feels a bit more playful than Outlook, and that may appeal to some users; however, I prefer Outlook’s more minimal design.

Spark is incredibly easy to use. Of all the apps I tested, it reminds me the most of Mailbox (which I really liked and would probably still use if the iOS and Mac apps were still around).

Spark compose

Composing a new message puts the options at the top, which I’d rather see at the bottom since I am using a 6s Plus. It does allow you to easily swipe through signatures to pick a different one. Like Outlook, it supports a “Smart Inbox” to help you deal with the most important emails first. Spark also contains “quick replies” that you can customize. This allows you to quickly reply to messages that don’t need more than a “Sounds good” or a “Thank you.”

Spark quick replies

Spark supports the usual email account types. Google, Exchange, Yahoo, iCloud, Outlook.com, and IMAP are all included. One unique aspect of Spark over others is that a lot of the actual processing happens on the device — it’s not Readdle’s servers that are parsing it. A few things are stored with Readdle, but it’s on AWS, and it’s minimal. They have a blog post that explains it in more detail.

For example, things like snoozing emails actually happens on the device. From a security perspective, this is great. My main concern is that if the app somehow got closed on the device, the snoozed email wouldn’t show up on another app (a Mac app for example) until Spark was re-opened. Depending on how security-focused you are about your email, this is either great or terrible.

Spark originally launched as an iPhone-only app, but was just recently updated to native iPad support as well. Readdle is promising that a Mac app is in the works.

Like other apps in this category, Spark integrates with a number of third-party services. This includes Dropbox, Google Drive, OneDrive, Box, Readability, Pocket, Evernote, OneNote, and Instapaper. It does contain a built-in calendar, but it lacks anything but a “day view” with the ability to tap on other days in the month. The calendar is a part of a “Card” system that Spark offers to quickly access certain items (Mail folders, snoozed emails, etc).

Overall, Spark is an incredible app. Readdle came out of nowhere with one of the best email apps on the market. One question that I’ve always wondered is if it is sustainable as a free app. Although Outlook is also free, it makes sense because Microsoft is a large enterprise. With Readdle, they seem to exist off app sales. However, word on the street is that they will sell future enhancements as in-app purchases.

Notable Other Apps

Airmail

Airmail

Airmail is the newest entrant to the iOS mail scene. The Mac app has been well-regarded for some time, and it’s actually our favorite email client for OS X. If you were to ask what for the best email client for the Apple ecosystem, and you wanted the same experience across OS X and iOS (settings sync via iCloud as well), I’d advise you to look at Airmail. It’s currently $4.99 on the App Store.

One area that Airmail excels is with third-party app integration. It has support for 2Do, Drafts, Deliveries, 1Writer, OmniFocus, Fantastical, Wunderlist, and many more.

Dispatch

Dispatch for iPhone

Dispatch is a fantastic app and has a lot of great integrations with other apps. However, it does lack true push notification support and Exchange accounts (and no plans to add it, so for a lot of people that will be a show-stopper. Otherwise, it’s a really great app that works on both iPhone and iPad. It’s currently $6.99 on the App Store.

Inbox/Gmail

Gmail for iPhone

There is a lot to like about Inbox for how it organizes your email. If you are a heavy Gmail web interface user, you might consider looking at Inbox or the official Gmail app. Since they only support Gmail accounts, it’s hard to recommend either as the best third-party email app.

CloudMagic

CloudMagic for iPhone

CloudMagic is most known for its “smart card” system that allows you to connect it to various productivity apps. If you send and receive a lot of email attachments, it’s a great app. It works with Gmail, Google Apps, Exchange, Outlook, Office 365, Yahoo, iCloud, and all IMAP servers. Cloud Magic also promises to save battery life by using Push Notifications from the cloud (similar to how Overcast sends push notifications). It’s a sharp looking app as well.

Boxer

Boxer for iPhone

Boxer is a really good app that includes a built-in calendar and a number of integrations with cloud services like Dropbox, Box, Google Drive, etc., and supports the usual account types (Google, Exchange, iCloud, etc.). It has great swipe actions and solid bulk email management and was recently purchased by VMware, so it looks to be well-financed in the long term. It does lack the snooze feature that so many people use, however. Another negative is that it lacks push notifications for a number of account types.

InkyMail

InkyMail for iPhone

InkyMail is one of the more unique email systems I looked at. The most unique feature is how it can sort your email in various ways. It can filter out any kind of newsletters, social notifications, and other types of fluff that can distract you from handling the more important emails. The app is free for basic use, but it requires a $5 per month subscription if you want Exchange support.

Mail Pilot

Mail Pilot for iPhone

MailPilot is the most expensive app what we considered. At $10, it’s still a bargain for all that it does. Its focus is on turning emails into tasks. It supports snooze, easy navigation, and is extremely customizable (with great swipe actions). One large negative that will deter many users is that it lacks Exchange support (unless your Exchange server supports IMAP connections).

Conclusion

We’ve come a long way from a time when Apple didn’t allow apps on the App Store that duplicated functionality of the built-in iOS apps. While the iOS 9 Mail app is the best yet, there is still plenty of room for additional improvement. With a wealth of options from existing apps and newcomers, 2016 might be the year that a lot of users look to upgrade from the default client. Outlook is what we consider to be the best overall app. With a smart inbox, great snoozing options, and a built-in calendar, it makes a great addition to your iOS toolkit.

Free Productivity Guide: Download our simple guide to productivity to help you improve your workflows and be more focused with your time and attention. Get it here.

Microsoft Outlook

Microsoft Outlook

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Outlook for iPhone is the best third-party email app because of the focused inbox, snooze options, calendar, and a wide range of support for various email systems.