Where Does Spark Mail Store Local Data?
Spark mail Application Support folder with cache and account state on macOS.
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Spark syncs mail, calendar and settings through your Readdle account, so the local folder holds cache, logs and offline state rather than the mailbox itself. Signing in on a new Mac re-downloads everything.
Smart folders and templates sync with the account too. Clear the local folder to fix stuck sync without touching server mail.
Where Spark stores this, by platform
~/Library/Application Support/Spark
Holds cache, logs and local account state. Exact internals vary by Spark version (Classic versus new Spark), so confirm on your install. Mail itself re-syncs from your providers, so clearing this only forces a fresh sync. Reach it through Finder Go > Go to Folder.
Frequently asked questions
Will reinstalling Spark delete my emails?
No. Mail lives on your providers and settings sync through your Spark account. Local folders hold only cache.
Spark sync is stuck. What do I clear?
Quit Spark and remove its Application Support folder, then sign in again. The client rebuilds cache from your accounts.
Notice an outdated path? Let us know.