Spark for Mac

3.14. How to clean install Spark

If Spark shows empty messages with "No Subject" in Inbox and they can't be deleted, please consider performing the clean install. It will clear all settings and added accounts in Spark.

To clean install Spark:

  1. Open Finder, hold ALT button
  2. On Menu bar select Go - Library
  3. Open folder 'Group Containers'
  4. Find and select the folder: ‘’
  5. Delete it and restart Spark.
  6. Re-add your accounts. 

If you are using Spark for Mac Beta, please delete the folder: "'.

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