add mime type detection to WireMail attachments #317
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So far, file attachments in WireMail are hardcoded to "application/octet-stream"
This is not wrong, but we can be more specific. I grabbed some lines of code from FormBuilder and placed them into WireMail. Isn’t this a useful addition?
Why I did this: Some ticket systems ("Znuny", to be exact) handle images attachments from incoming mails differently when there is a proper MIME type on the attachment – you can view them in a preview and other stuff.