Spark brings the best email experience for professionals and their teams.
Effortless, beautiful and collaborative.

"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 2.9.10

Today’s update is all about minor fixes and general improvements to keep things running smoothly!

## Fixes
– Fixed a specific crash of the app while creating Smart Folder without any filter;
– Fixed Inbox sidebar item badge update;
– Fixed the Smart Inbox card for specific accounts.

Thank you to all our customers for your support and your feedback. I know we say it often, but that doesn’t make it any less true.
If you need us you can find us at
New amazing features are coming soon!

Ratings and Reviews

4.7 out of 5
52.3K Ratings

52.3K Ratings

Kaitlin Roten ,

Has changed my outlook on email

THANK YOU!!!!! I’ve been using spark for a few weeks now and I’m in love. I knew what I wanted from an email client but I thought it didn’t exist. I wished I would’ve been using spark YEARS ago. So many emails were getting lost because of my lack of motivation for email and now I’m back in business. I’ve always wanted to be a zero inbox kind of person but the task was so overwhelming. Spark has made it easy and I’m much more focused. I love the snooze feature because before I sometimes needed time to think about a response but I inevitably the email got lost. I’m a business owner so I should respond to emails in a timely way so this has really helped me retain more clients and keep up with email tasks. This really helps me focus when I get interrupted with an email or just need a little more time to think about my response but don’t want to forget about responding (which is what use to happen!) I also love how I can schedule my emails to look more professional sending them more at “business hours”. Email use to be this scary and terrible thing that I had to do, now it really is fun and enjoyable.

Developer Response ,

Hi Kaitlin! Thank you for sharing your feedback with us - you've made our day 🤩 We are very glad that you like our Snooze and Send Later features and that Spark helps you to achieve Inbox zero quickly and without much effort, that’s exactly what we are striving for.
We appreciate your insight and please don’t hesitate to contact us if you have any other questions or comments.

Amanda_anguel ,

Spark was great - now it’s not

I’ve used Spark for the past 3 years. I have 5 e-mail addresses because I am a teacher at several schools and a law student. I turned to Spark to better organize my email. However, I now dread having to open the app every morning. My “flagged” emails are overflowing. My “seen” emails are overflowing. I can’t figure out how to unsubscribe from emails without having to physically go into each email to click “Unsubscribe”. The app does NOT sync between iPad, iPhone, and Mac which is frustrating because if you delete emails on your iPhone you can then expect to see them UNREAD when you check your email on your Mac. Email signatures that you create on your iPhone will not sync to your Mac or iPad. Also, if you do not use your iPad for a week (Spark installed) - you will be inundated with zombie emails that were replied to or deleted already. Additionally, there’s no option to create email lists/groups. This is frustrating because as a teacher I like to create email lists of my students. Aside from that my Smart folder is unorganized. Emails marked as spam still come through to my inbox. The added team features are just unnecessary bells and whistles. I’m in the process of transferring my emails to Edison Mail. Spark has become headache.

Developer Response ,

Hi Amanda! Thank you so much for such a thorough review and we are sorry that you experienced such issues with Spark. Would you mind contacting us at at so that we can investigate the sync issues you mentioned?
We will also do our best to find a solution for an overflowing inbox. As for creating email lists and batch unsubscribe feature - indeed, it is not yet available, we will consider adding this functionality. Thank you in advance!

keem0h ,

I like this... mostly

Since my beloved gmail app turned sour, I’ve tried so many email apps for my phone. This one has some handy features, I like being able to view all of my new mail across multiple email addresses, it’s still sorted in handy categories. Customizable swipes, sharing features, it’s all great! The layout is simple and straightforward.
My main complaint: if you’re a super multitasker like I am, every second counts, so the lag when I open this app, is annoying. If my mail is pushed, why do I have to wait for my inbox to update? If I don’t remember to wait for the app to load the newest messages.... that means the message I thought I was clicking is not the newest anymore and has been shuffled out of view and now I have clicked an irrelevant newer message and have to go back to my inbox to scroll to find what I’m looking for. It’s that frustrating feeling like I’m not clicking fast enough. Is it a deal breaker, no. But it’s annoying when you have limited time during the day to check email and now have to remember to mark the accidental email as unread so you remember to deal with it later. Not efficient for me... but I’m sure my issue is probably irrelevant to most.

Developer Response ,

Hi! We are excited that you are considering Spark among other email clients. Regarding the issue with lags, we've added multiple performance improvements to Spark and the email loading speed also has been improved. If the delays in sync continue, please reach out to our Support Team at so that we could look into this further. Thank you in advance and let us know if you have other comments 🤗


Readdle Inc.
435.8 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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