Readdle Spark mail app privacy breach

I was prompted by Spark to give feedback. It has this annoying feature that drives me crazy so I decided to give them my thoughts. It opened up a blank email with their email address inserted and as I finished my diatribe, notice that there was an attachment added already to the e-mail.

Curiosity got the better of me and I inspected the contents (zip file with folders containing text files with what looked like diagnostic info). As I was reading through, I discovered it had all the names of my mail folders and subfolders as well as lists of all of the subject lines of all my emails.

Not sure what I'll do with this yet, but this surely has to be a major breach of privacy in sharing personal data.

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