Review of 3 Key macOS Email Apps

In July last year I reviewed several new(ish) email apps for macOS. I really have no idea why. I’m not a tech product review guy, my reviews are apropos nothing really. Just a take on what remains the killer app of the internet era today. Sorry Slack, Troll, Asana et al, but thats reality. Now there’s a new player on the block, Spark, where another has fallen by the wayside and new one may be on the horizon. So, let’s dive in on my take. And as an FYI, I use an early 2017 MacBook Pro 15″ with touchbar. I’ll have some commentary on that.

Spark Email App Review
This email app came out for iOS and macOS earlier in 2016 and according to Readdle, it’s maker, it is still in beta. In short, I love it, well, the macOS version, not so strong on the UI design for iOS, but that’s just design preference on my end, functionally, it works brilliantly. I find it the cleanest UI of them all for macOS. Spark brings in features in a subtle, yet highly functional way. It sets up nice and easy with Google, Exchange and others. You can find it here. It did, rightly, receive Best of Apple 2016 too. The touchbar integration works great by the way. No issues.

Some cool features of Spark:

  • Quick Replies: You can set up some quick replies like a thumbs up or smiley face (these are customizable) for quick responses. In etiquette terms it’s a nice way to respond quickly and acknowledge the sender.
  • Segmenting: You can have a unified inbox view and it has an unobtrusive way of separating the accounts, plus newsletters, personal, pins and snoozed emails in a very intuitive way.
  • Conversation Strings: Pretty much all email clients do this today, but Spark seems to have developed the cleanest way I’ve seen.
  • Functional Integrations: They’ve added the ability to send emails to Evernote, Things, ToDo and others. In a very intuitive way again. They plan to add more.
  • Calendaring: While I wish they’d integrate the calendar like Outlook does, the iOS version is very good (better than PolyMail or Mail) and it synchs nicely with the 3 Google Calendar accounts I use and mixes in with Mac’s native Calendar app. You can accept etc., right within the email which is nice.
  • Customizable: Slowly, Spark is getting there with customization. It’s pretty good now, close to Airmail 3.


  • Calendar: I think the macOS could be better with an integrated calendar right in the app. This is no small task mind you. it hasn’t replaced Fantastical for me yet.
  • Signatures: Very weak in being able to do much with signatures, even trying to reduce text and change colours. Needs beefing up. A lot.
  • iOS UX: Spark on iOS is functional and it works nice, but I still find it kind of brutalist. The elegance of the desktop app is not there, so for mobile I am sticking with Outlook for iOS.
  • Deep Integration: If you want to get rid of Spark, be forewarned that it embeds itself very deeply into macOS. I was very angry when I found that Spark had somehow gotten into my Notes and taken out some personal data. I had to mess with the code to stop this. That’s a privacy violation in my books.

Right now, Spark is free. I’d happily pay between $10 and $20 for the app though. I hope they aren’t silly like PolyMail and charge $10/month for a single user. It’s very fast and the search capability has improved a lot and is very good.

AirMail 3
This email app has won Apple’s design award for apps for 2016. It is nicely designed, but I find it is not as well designed as Spark. It can be cluttered I find and the way they’ve drawn the icons to me looks like wobbly crayon style. But that’s personal taste. AirMail offers great integration with other services including Fantastical. Setting up accounts is clean and fast. The app is very reliable on both iOS and macOS. AirMail 3 is a powerhouse for productivity folks. More than Spark right now, but I have little doubt there’s going to be some strong competition between the two very soon. You can find it here.

Downsides of AirMail 3

  • Still “cluttered” with email conversation strings, which can be difficult to navigate and the UI elements mixed in can be frustrating when trying to take action. Spark does this better.
  • UX Crayon Drawings: They’ve straightened them up from the initial version, but to me they still look amateur.
  • Calendaring: While you can engage with calendar invites, AirMail too could do better. I find Spark handles invites much better and more reliably than AirMail.

AirMail allows a lot of customization and is a reliable app. It’s good and worth the $10.99, especially if you connect to a whole lot of other productivity apps. Search works well in AirMail 3 and the app is fast. Especially if you have an SSD drive. Touchbar integration works fine and is functional. Now if Touchbar would stop crashing and popping all the time, which Apple is grossly in denial of, that would be great.

This app came out in 2016 and I tried the beta. Then they went to paid and a very silly paid model in my view. The minimum price starts at $10/month or $120/year. For what they’re offering, that’s pretty steep for an email app and I’m not buying. PolyMail is a “bit more” than an email app and in some ways is trying to be a new Outlook hybrid with added ability to track emails sent and when they’re opened, including when attachments are downloaded and something they call campaigns. Sos it can be useful for small teams for its integration. For solopreneurs though, it’s a bit over the top in price terms. Also, for email tracking purposes, you need to enable PolyMail to have access to your traffic.

PolyMail has a nice UX, though I found it a bit overly “light” and had trouble with the conversation strings, again, something that Spark has done very nicely. Account setup is easy. A very nice feature is the way they do contacts on a sidebar. Great information and can be extremely powerful for a sales team/person. I really liked that feature. You can find it here.


  • Calendar Integration: I struggled with it in beta, then went to a 14 day trial and struggled with it again. No matter what I tried, the calendar function promised never worked. Their customer support is good, but the app failed to work.
  • UX Design: It’s very nice and quite clean like Spark, but also very “light” and can be hard on the eyes after a while.
  • Price: While PolyMail is a very nice app, I don’t think it’s ready for primetime based on my spotty experience and at $120/yr for a single user when AirMail 3 and Spark are productivity tools and AirMail 3 is only $10.99, well. I think PolyMail should offer a one time price, limiting some functions, for a single user option.


For me, Spark is heading in a great direction and I love the app. It’s proven more reliable in beta than AirMail 3 and PolyMail as paid apps playing in primetime. The UX truly is clean, it’s fast too. I find the Spark team good with customer service and they’re listening to feedback. PolyMail is nice, if not trying a little too hard to be cool looking and rather oddly priced.

There are a number of other options including Outlook by Microsoft, which is slowly getting better but has the bloatware history of Microsoft and the UX while better, still needs a lot of work (you can’t even customize the toolbar ribbon! Come on Microsoft!) And there’s no 3rd party integrations with Outlook. There’s Nylas N1 and a few others, but the above three seem the cleanest and best functioning. Everyone will find their own value at the end of the day and it’s really what suits your workflow and what design approach you like best. Personally, my money is on Spark.

What’s your favourite email app for macOS and why?

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