Use Flanker to improve parsing of badly encoded mail

[kdeldycke]

Detection and skipping of badly encoded mails has been added in #47. We can go further and improve parsing of these mails.

Flanker is a good effort to better parse email content in Python: https://github.com/mailgun/flanker . The idea would be to reuse its parsing utilities.

Unfortunately, Flanker doesn't target Python 3: mailgun/flanker#106 . Some efforts are made on side branches and forks to make Flanker Python 3 ready: mailgun/flanker#106 (comment) . But reconciliation of these forks is unlikely to happen. 😢

[kdeldycke]

Digging deeper in Flanker's code, it seems that the later rely on the chardet module to magically guess badly encoded mails. This is strangely familiar with @kdmurray91 approach from #36.

So if we can't go the Flanker route, maybe we can reuse #36 code to enhance mail parsing.

[kdeldycke]

Flanker is now Python3-compatible. But we will close this issue for now while we wait for community feedbacks following the revival of this project.

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.