Spark Classic email client breaks with Microsoft account auth change
Users of Spark Classic on Mac lost access after Microsoft upgraded its account authentication method, and the app now requires an update they will not take. They are actively seeking a non-Electron Mac email client alternative, signaling real switching intent.
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Similar Problems
surfaced semanticallyEmail Client Update Silently Deletes All Saved Mail
After an app update, Spark (email client) resets to a fresh-install state and deletes all locally saved mail. Users discover data loss only after the fact with no warning or recovery path. This is a severe data integrity bug in a vendor product.
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Problem descriptions, scores, analysis, and solution blueprints may be updated as new community data becomes available.