Email may not be the centre of our digital lives anymore, with instant messaging service like WhatsApp and dedicated work chat offerings such as Slack proving more and more popular. But there is certainly still a place for email in both our work-related and day-to-day activities.

Apple provides its Mail app free with every Mac, but if you're willing to look around then you'll see there are plenty of other email clients that come with additional features or layouts that may suit your needs better than Apple's default program. Don't stick with Mail without first checking out some of the better alternatives to Mail that are out there.

Below, we'll be assessing a collection of email packages for Mac, seeing how well they perform in the following areas that we think are the most important:

  • How easy it is to set up, whether you can have multiple email addresses and if it supports the various protocols and services
  • How well you can clear your inbox with tools such as: postpone/send later/snooze, pre-set responses, smart search, spam filters, and so on
  • How quickly you can reply to messages and useful templates, markdown support, signatures
  • Other email management tools such as reminders and read receipts
  • Whether you can undo an email
  • How quickly you can find important emails
  • How well the email program integrates with other apps
  • Whether there is a cross platform/mobile version
  • Whether there are built in Security features
  • Price

We'll start by looking at some free email options, and we'll also feature some paid services that are worth of consideration. We'll share what the best emai app for Mac is, what the best free mail app for Mac is, and how Apple Mail compares to Outlook for Mac.

Apple Mail

Apple Mail

  • Free from Apple, included with macOS

Like us you are probably using the Mail app that comes with your Mac. It's not a bad app at all. One of the key benefits is the simple fact that there is a matching app available for your iPhone and iPad - but there is so much more than the integration between the different devices that allows you to 'Hand off' an email from one device to another and carry on from where you left off.

Mail also offers various handy features such as built-in Mark Up tools that you can use to illustrate and emphasise aspects of the attachments - and even add your signature. There's also that essential elements of modern digital communication - emoji. 

You can sort your email in various ways to make it easier to manage. This includes creating Smart Mailboxes (folders) with set rules that determine which emails are directed there. One feature of Mail that we love is the option to differentiate between VIP senders. So that emails from people in your VIP list are diverted to a separate inbox (meaning you can ignore everything else).

In a similar fashion, you can select certain Mailboxes as Favourites, and then quickly access them from the Favourites section in the Mail sidebar. 

Use the Search field in the top right to find emails. Mail uses intelligent search to determine the most likely email you are looking for and also offers suggestions that might further narrow down your results.

If you need to send a large attachment (or more) but don't want to clog up your recipients inbox, Mail will automatically store the attachment in the cloud for them to download. There's no need to use a separate app like SendBigFile, Mail does it all for you with the Mail Drop feature.

Mail works with the various types of email accounts, including iCloud, Exchange and Gmail, and it's easy to set up - just open Mail, choose Mail > Add Account from the menu bar and enter your email details. We have perviously had a little trouble setting up Hotmail and though.

Mail is also heavily integrated with macOS, so you can send replies from the Notification Centre, or send an email from within another app using the Share feature.

With the macOS Big Sur release, Apple added tabs to Mail, so you can have multiple inboxes open at once and switch between them just like tabs on Safari. To open a new tab in Mail press Shift and choose File > New Viewer Tab.

macOS Mail is a very decent email package that comes with lots of useful features, and thanks to its integration with macOS and iOS it works seamlessly across all your devices and all your other Apple apps. It would be very easy to stick with Mail, but if your email struggles are becoming unbearable, or you think that you could use some additional features such as undo send or the ability to pin important mails, there are lots of other email clients worthy of consideration.

Below we'll look at what we think are the best free options, along with some paid for options that might just change your life.



Spark is a well regarded email app by Readdle, so much so that it's been given an Editors' Choice award by Apple on the App Store. 

It's relatively easy to set up, although there are a few hoops to jump through when it comes to iCloud. To set this up in Spark you'll need to generate an app specific password, and to do so you'll require Two-Factor Authentication to be tuned on. This is more a security feature from Apple rather than a limitation with Spark.

Spark's layout is clean and simple. In the sidebar you have all of your Inboxes for the various email services you link (Gmail, Hotmail, iCloud, Exchance etc.), but there's also a universal inbox so you can see everything in one place. One of the real advantages of Spark is the Smart inbox setting. This splits your recieved mail into different sections including Personal, Notifications, Newsletters, Pins, and Seen. Right from the start we already felt less stressed because it felt like the stuff that mattered had been pulled out so that we could focus on that straight away.

Open an email and you'll see an option to Pin - which is similar to choosing to Flag an email in Mail but more in keeping with the way you can Pin a note in Notes or a webpage in Safari. It's an easy way to separate out important emails so you can find them quickly - just don't pin everything. If only Mail could do this too! 

You also have a snooze option, which we think is a great idea. We tend to 'manage' our email by opening emails, glancing at them to see if we need to action anything immediately, and then Mark as Unread with a view to going back to it later. With Spark we can choose to postpone an email until later today, tomorrow, next week, someday, or pick a date.

You'll see another neat feature if you scroll to the bottom of an email. Here you'll see buttons to Reply, Forward and Quick Reply. Quick Reply is a little like the way you can respond to text messages or social media posts with a Like or Love, with the addition of responses such as Great Idea or Call Me. We like the idea but these sorts of responses probably aren't appropriate for work email.

There are some handy swiping actions that you can use to quickly manage your emails. A short swipe from left to right changes from Read to Unread. A long swipe from left to right archives an email. A short swipe from the right Pins an email. And a long swipe form the right will delete. We were a little worried we'd accidentally delete something we wanted to Pin. You can actually change the swipe actions in the Settings, making it even more useful. 

Templates is another handy feature. If you often send identical or similarly worded emails you can store it in Templates and call it up when required.

If you frequently find yourself checking your email late at night and stop yourself replying there and then because you don't want your email to be missed or because you don't want that person to feel they have to reply to you at 11pm, then Send Later is for you. This allows you to schedule when an email is sent, so you can choose to send later today, this evening or tomorrow, or pick a date on the calendar.

There's also the option to set a reminder - so if a reply hasn't been received in, say, a week, you can get an alert reminding you to remind them to get a move on. This could be really useful.

The app has a built in calendar that works with iCloud and Gmail. It supports iCloud, Google, Yahoo, Exchange, Outlook, and IMAP.

Spark is free but you can pay a monthly per-user fee for various team focused features and extra file storage. The app is brilliant and you should definitely give it go, plus there's also an iOS app that's equally powerful. 

eM Client for Mac

eM Client for Mac

eM Client has been a free email client for Windows for some time but a Mac version was introduced back in 2019 and has since grown into a powerful alternative to Mail. Sadly there are no iOS or iPadOS apps available. 

While the base version is free, the vast majority of the cleverer (and more useful) features are reserved for the Pro tier. At the time of writing this costs £44.95/$49.95, although that's a one-off payment for the license on a single machine. A 30-day free trial is available so you can see if you deem it money well spent. 

We had the usual issue setting up our iCloud account, as outlined in the Spark section above, but once that was done we were off to the races. 

The free version of eM Client restricts you to two email accounts, so if you were hoping to pull in multiple ones then you'll be better off with Mail or Spark. 

A clean layout and choice of colour schemes makes eM Client easy to use and pleasant to look at while you sift through your messages. There's support for multiple types of email provider (IMAP, POP3, Exchange and AirSync) and the app gives you the option to encrypt your messages if you want extra levels of security. 

As we mentioned earlier, the majority of the more advanced features, such as Snoozing emails, scheduling messages, instant translation of foreign language text, and the Watch for Reply tool that alerts you if a paricular person responds (perfect for when you're waiting for that important email), are all locked away in the Pro tier. 

These are joined by the Notes section, that allows you to create detailed documents and share them via Exchange, Microsoft365 or IceWarp. 

Thankfully there are some things you can do on the free version, including using the integrated calendar and reminders tools that link up with your Google and Apple accounts, among others. 

The calendar is automatically populated with all the appointments and events you’ve added already in your accounts, plus you'll also have access to your Contacts, replete with their cards. 

Email is sorted by day, so you can see at a glance which emails have come in since midnight. Like Mail you can mark emails with a different colour flag, except that you can change the name of the Flag, so essentially create your own tagging system.

We love the Agenda that appears on the right hand side of the central email pane. Here you will see a combination of your calendar events and reminders, as well as any emails you have flagged. This is so useful that on seeing it we decided that we really could switch from Mail to using eM Client - although we’d miss Mail’s VIP system that basically means we can pull emails from important people into a separate folder and only ever look at that.

eM Client has a wide range of impressive tools if you're happy to pay for the Pro tier. For those who don't want to take that route, we can't recommend it over the likes of Spark or Mail. 



Mozilla is probably best known as the developer behind Firefox, but for many years it has also made an email client - Thunderbird. However, for a while it looked like the project would fade away, with development of the app 'uncoupled' from Firefox in 2016. But, since then, the community of users have donated money and time, to the point where in 2020 it was announced that the project would move to MZLA Technologies Corporation (a subsidiary of Mozilla) and development would continue with yearly releases. 

This is good news, as the open source nature of Thunderbird makes it indeed a rare bird on the Mac.  

As with all third-party emails clients, you'll need to generate an app specific password for iCloud, but other POP3 and IMAP accounts work fine. 

Thunderbird's design feels a little retro, but there are some modern appointments that make life easier. For example, Tags is a useful feature that lets you mark emails as Important, Personal, Work, ToDo, or Later, and then view all your tagged emails, or just those in a certain category. You can also create your own Tags, so you could add project focused Tags, and you can assign more than one to an email.

If, like us, you use Tags around macOS to help you locate project related files, you'll find yourself wondering why Apple hasn't implemented it in Mail. The closest you get to Tags in Mail is different coloured flags (Flags in Mail would be a whole lot easier if you could assign names rather than Red, Yellow, etc).

Tags isn't the only feature to make locating particular emails easier. Below the Search field is a 'Filter these messages' field which works a little differently to Search. Type a term into the Search field and a new tab will open up which shows the text of every email in your inbox that mentions the word. But if you use the Filter field you'll just see the email titles. 

We love the idea of Tabs, which, like Tabs on Firefox, mean you can have more than one email open at a time and not have a cluttered screen. This is great if you are dipping in and out of particular emails as you can keep them open. In fact, Apple  added the same feature to Mail in Big Sur (although Tags still remain absent).

You'll notice that images don't appear in your emails by default. This is for privacy and security reasons - by not displaying images the sender isn't being alerted to the fact that you are viewing the email. This view can make browsing emails a little boring so you can turn it back on if you want.

Thunderbird offers an integrated Calendar and chat features. You need to set up a chat account, and can do so using Twitter, Google Talk, IRC or XMPP (Jabber). Recently, it also announced that you could use Mailfence directly in Thunderbird, thanks to a new partnership with the encrypted email service. While Mailfence offers a free tier, it is limited to messages of 500MB in size. So if you want to take full advantage of Thunderbird, then signing up to one of the various tiers would be a good idea. Alternatively, you can use the new OpenPGP encryption feature that's built-in to Thunderbird. 

The feature-set can be extended even further by using add-ons and extensions available from the Thunderbird store, just like with Firefox. 

The only real problem with Thunderbird is that it's not all that intuitive to use. There are some powerful features, but you first need to learn they are there and then find out how to use them. If you want a simple to use email program this isn't really it, but if you're willing to put in a little work (there are plenty of video demos on YouTube) then it's a great option. 



Another contender is Mailspring. Like many of the offerings on this list, the app holds back some of its prime cuts for subscribers, but the free version still has a decent amount of features on offer. 

It supports all the major email providers, including iCloud (one you've generated a password), Gmail, Yahoo, IMAP and Office 365 accounts, plus you can of course have multiple accounts setup. These can be viewed either seperately or through the universal inbox, allowing you to decide which you prefer. 

Among the features available for free are the advanced search, which allows you to enter terms, such as in: (for a folder or label) to tell the seach engine where specifically to look. If you keep your emails well organised, than this can make finding them a doddle. 

There's also email templates, so you can respond quickly to regular types of messages, signatures can be set up for standard signoffs, plus there's swipe gestures like the ones found on Spark, making it easy to quickly deal with emails. 

Move up to the paid tier, which costs $8/£6p/m, and you get scheduled emails, snooze, undo send, reminders for messages that need following up, plus the very helpful Pre-send Checks that warn you if you've left of attachements or made other common email errors. 

One dealbreaker for some will be that there isn't an iOS app to accompany the Mac version. 



Polymail is similar to Spark and offers just about everything you'd want within a single app. It used to be that there was a free version of the app that includes most of the features - but those days are gone, now pricing starts at $10/£7.25p/m for the Basic version (if you pay annually, otherwise it's $13p/£9.50p/m). There's still a 7-day trial version at least.

The app, available for both iOS and Mac, offers a range of advanced productivity tools including email tracking, send later and read later, all from a tidy interface. You can get in-depth insights such as the number of times the email has been read, and when. It'll also provide handy info including if/when attachments were downloaded, as well as blocking any tracking features in emails you receive.

You'll find Contact Profiles, which appear alongside emails, and display all the information it can find on that person online – LinkedIn bio, Twitter handle, photo, current job, etc. Think of it as Facebook, but for email. It'll also bring up any previous encounters you've had with that person, and any files you've shared.

There's also a handy Follow Up option that lets you set a required number of days in which you will follow up an email.

Oh, and it lets you un-send emails once you've sent them (for several seconds, anyway). It's a shame that the free tier has gone away, but if you're willing to spend the money then Polymail has plenty to offer. 

Airmail 3

Airmail 3

Airmail 3 is a popular Mac Mail client, and provides the same experience whether being used with a single email account, or many – ideal for those of us with multiple email addresses for work and play. It has an Apple Design Award-winning, modern looking interface, that’s easy to get to grips with.

Like the default Mail app, the app also boasts a VIP feature, which lets you filter out emails by certain people, meaning you’ll never miss an important email from a colleague again. There’s also the ability to create rules for Smart Inboxes, so Airmail will automatically sort any incoming messages to your preferences.

You can snooze emails to deal with later, “quick reply”, or choose to send an email at a later time or date. And best of all you can use the Undo Send feature - although this only works if you have set up your email to send after a delay.

Airmail is quite customisable, both in terms of its aesthetics and function, plus there are great apps for iOS and iPadOS that sync up perfectly with the settings you create on the Mac. 

Most of the features outlined above are available in the free version, but with the Pro tier only costing £7.25/$9.99 per year, we think it’s well worth considering investing a bit in the app, as it’s one we want to stick around. 



£48.99/$49.99 from Newton

Newton is another app, like Thunderbird, that seemed to be on the ropes a few years back. Now, it’s back in active development and seems to be growing well. 

Aside from the 14-day trial, there’s no free tier available, so if you don’t want to pay, just stop reading. Otherwise, it’s a flat £48.99/$49.99 per year.

For that you get apps for iOS/iPadOS and macOS (both M1 and Intel), plus a range of premium features. 

These include read receipts, user profiles, scheduled emails, templates and quick access shorter versions called snippets, the ability to share emails via links complete with expiry dates, plus advanced search capabilities and more.

It also comes with a range of SuperChargers that aim to enhance your email experience, one of which is Recap. This brings conversations that haven’t concluded yet back to the top of your inbox, so hopefully you won’t leave that task hanging.

As well as offering an impressive suite of email-focused features, Newton also offers integration with several service providers including Salesforce, Trello, OneNote and Evernote, allowing users to save content from emails directly to the other services. Got a link you need to check out later? Easily add it to your Pocket account without leaving the app.  

It’s not free or even cheap for an email client, but it is good.