Spark is the best personal email client and a revolutionary email for teams. You will love your email again!

"Best of the App Store" - Apple
"It's a combination of polish, simplicity, and depth" - FastCompany
"You can create an email experience that works for you" - TechCrunch

**Beautiful and Intelligent Email App**
We are building the future of email. Modern design, fast, intuitive, collaborative, seeing what’s important, automation and truly personal experience that you love - this is what Spark stands for.

**Dark Mode**
We've carefully selected the colors to help you work better at night and save battery life. Select the Dark or a truly Black mode in Personalization settings > Appearance. It’s available for all iOS Spark users.

**Farewell to Busy Inbox**
Smart Inbox lets you quickly see what's important in your inbox and clean up the rest. All new emails are smartly categorized into Personal, Notifications and Newsletters.

**Discuss email privately**
Invite teammates to discuss specific emails and threads. Ask questions, get answers, and keep everyone in the loop.

**Create email together**
For the first time ever, collaborate with your teammates using real-time editor to compose professional emails.

**Schedule emails to be sent later**
Schedule emails to be sent when your recipient is most likely to read them. It works even if your device is turned off.

**Snooze That One For Later**
Snooze an email and get back to it when the time is right. Snoozing works across all your Apple devices.

**Find Any Email In An Instant**
Powerful, natural language search makes it easy to find that email you're looking for. Just search the way you think and let Spark do the rest.

**Get Notified About Important Emails Only**
Smart Notifications filter out the noise, letting you know when an email is important, saving you from notification overload.

**Powerful Integrations**
Integrate Spark into your workflow and take productivity to the next level. Supports Dropbox, Box, iCloud Drive, and more.

**Built-in calendar**
A full-featured calendar works right in your email to help you always be on top of your schedule. Create events easily using natural language.

**Create links to email**
Create secure links to a specific email or conversation. Share the link on Slack, Skype, CRM, or any other medium so your team can see it and collaborate around it.

**Sign Off With A Swipe**
Before you send an email, quickly swipe to choose the right signature for the occasion.

**Email with Emotion**
Quick Replies get the point across with just a tap. Love, like or acknowledge an email in an instant.

**Email Never Looked This Good**
That terrible mess in your inbox is now replaced it with a beautiful, threaded message design.

**A Truly Personal Experience**
Customize Spark to work as you do. You decide which swipes do what, what cards are shown, and how many emails you want to see.
You’ll love your email again!

If you need us, you can always find us at

What’s New

Version 2.7.2

Another "spit and polish" update, addressing a few minor improvements to your favorite email assistant.
Please keep the feedback coming at and our Support Team will point you in the right direction.
And stay tuned! New features are coming soon!

Ratings and Reviews

4.6 out of 5
7.5K Ratings

7.5K Ratings

DamienButt ,

Great initially. But just too slow!

When I started using Spark I thought it was great. Refreshing and enjoyable user experience. Unfortunately I have now binned this app off as for me, as a heavy email user, the app has just become borderline unusable. Emails are slow to arrive, and ridiculously slow to load. I simply don't have the time or patience to wait 10 mins to read an email. The desktop app also has this really annoying thing where it wants to sync the database right as you need to quite the app, sometimes hindering restart or shut down times. It is also slow to receive and load emails too. So I have also binned the desktop app off as well. I reached out to the Readle team via email to ask them to fix the issues, as I really do like the interface and ideally I would have liked to continue using the app. But I had no response which indicates to me that they are not over bothered in fixing the problems. Updates comes through but they seem more interested in adding new features rather than fixing core issues to make the app actually work in a robust manner. It's just become extremely unproductive to use. I have moved back to Outlook as it exhibits none of the issues above and work flawlessly. Mail also works absolutely fine but I prefer Outlook. At this current point in time I could not recommend this app sadly.

Gingerkatiesparkles ,

Lovely design, good feature set... almost perfect

I’ve tried a lot of mail apps too. I tried this a while ago, didn’t like smart inbox, moved to airmail and then Edison mail. After some bugs from Email I tried this again, and updates have moved it on. It’s easy to toggle between regular and smart inbox, deleting is easy (something many email clients bury in favour of archiving), it looks clean and easy to read.

I like to file emails in folders for when search doesn’t work (and it doesn’t when you want to find that email from your mum - or maybe your sister - who mentioned something you can’t remember the name of in the middle of a bunch of other stuff...). My favourite feature of Spark is the filing auto-suggestions, which are spot on 85% of the time (basically when you’ve filed something from that sender before). However, my biggest missing feature - and why it only gets 4 stars - is the ability to easily create a new folder. I don’t think you _can_ do it from the phone app, which is a big drawback for me.

Medster777 ,

Great email app ... Could be the best personal assistant app


Please can you add functionality so that inbox subfolders may be created and managed using the app rather than only via the web platform.

Please can you add functionality in the next update such that different email accounts can be assigned different sounds in respect of their new message alerts.


I have tested this app out by using it in parallel with iOS mail and Gmail apps. I have now deleted the other two apps and Spark has replaced them as my sole email app. I am really very pleased with it.

It is a really smart app with slick functionality. For example swiping between different email signatures is a nice touch.

Clearly the calendar function is not the focus of this app's expertise but I wasn't expecting it to be. I have deactivated the calendar.

My go to is 24me app which is in the same league as Spark but focused on calendar, tasks and notes functionalities. In my opinion also the best at what it does on the market.

Spark is the best email app on the market at the moment for sure. If it merged with 24me/exceeded 24me in functionality then it would be by far the best (and I would wager only comprehensive) personal assistant app out there - and that I would pay money for.

Well done developers this is a good app. I hope you will take my suggestion under consideration for the future. I really think it has potential to be a great all in personal assistant app.


Readdle Inc.
409.2 MB

Requires iOS 11.0 and watchOS 2.0 or later. Compatible with iPhone, iPad and iPod touch.


English, French, German, Italian, Japanese, Portuguese, Russian, Simplified Chinese, Spanish

Age Rating


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  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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