Tasks & Calendar
Clear Spark Cache on Mac
You can clear the cache from inside the app if its settings offer that option, or by moving the cache folders to the Trash after quitting. Clearing helps when mail search is slow or the Group Container has grown to several gigabytes. Readdle has replaced this app with Spark Desktop, and the original is now called Spark Classic, so check which version you have first.
Clear the Spark cache without guessing
Spark data usually takes 500 MB – 10 GB on a Mac. The free scan shows the exact size on your Mac before you change anything.
Free scan · No account · Nothing is deleted without your OK · Moves to the Trash first · macOS 14+
OptiClear is a Mac app. Copy this page's link and open it on your Mac.
Email me the link- Application
- Spark
- Typical data size
- 500 MB – 10 GB
- Category
- Tasks & Calendar
- File Location
~/Library/Group Containers/3L68KQB4HG.group.com.readdle.smartemail-Mac
Spark cache folders you can clear
Spark has no separate cache folder. Its folders hold settings and your own data, so there is nothing to clear safely by hand.
What the Spark cache holds and when clearing helps
Specific to Spark
The Group Container folder holds a local copy of your mail, attachments and account data, and it is the part that usually grows large. Sandboxed settings and caches sit in the Containers folder, while the Application Scripts folder is created by macOS for sandbox scripts. Your mail stays on the mail server, so the local copy can be rebuilt. Typical data for this app runs from 500 MB – 10 GB, and clearing is worth trying when search is slow or the Group Container is several gigabytes.
What happens after you clear the Spark cache
The local cache is rebuilt from the mail server, so the first start is slower while mail downloads again. Your settings sync through your Spark account, so sign in again only if the app asks you to. Premium is a subscription tied to your Spark account and is not cancelled by clearing files. Items you moved to the Trash can be restored until you empty it.
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- Account and sync
- Spark stores your mail on the mail server and syncs settings through a Spark account; mail downloads again after signing in.
Try it without risk
- Download and scan for freeSee every Spark file and its size. No account needed.
- Clean free for 7 daysStart the 7-day free trial of the yearly plan inside the app.
- Keep it or cancelCancel in your App Store settings at least 24 hours before the trial ends and you won't be charged.
After the free trial, Pro costs $39.99 per year in your country's App Store; cancel any time.