Mu/mu4e: https://emacs.stackexchange.com/questions/23812/remove-attac...
Thunderbird: https://www.datarecovery.institute/remove-attachments-from-t...
Mu/mu4e: https://emacs.stackexchange.com/questions/23812/remove-attac...
Thunderbird: https://www.datarecovery.institute/remove-attachments-from-t...