Debugging what is wrong with Moblog

Can someone point me out on why Moblog works fine with some email accounts (example Gmail) but it hates other email accounts.

It seems from my testing, it cannot read the SUBJECT in a lot of email accounts.

Instead, if fills in the title field “Date;” in the channel entry.

I would really like to improve this module since it can be useful for tons of things. I created some nice tasks for emails following the EE University tutorial for tickets and while it works, it cannot properly parse most emails. Gmail for example works fine, other providers or email servers it cannot read the subject.

I guess because the headers are different depending on the email provider. If someone wants to help out with this, help would be appreciated. Ideally it should read properly, most email headers. At least from the most common providers and email servers, or at least the most widely used email servers such as Exchange, Postfix, Exim, Qmail…Sendmail.

An example of a email provider that does not work is mail.com just to name one.