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mail -f /var/mail/debian9
/var/mail/debian9: 0 messages
When mail -f /var/mail/debian9 executing ,the claws mail application is in off status.
Now open the /var/mail/debian9 with claws mail.
sudo apt-get install -y claws-mail
claws mail is here claws mail
Claws-mail say there 665 total 655 unread.
Why mail -f /var/mail/debian9 display none of email?
claws-mail will create a directory ,for example in my pc, /home/debian9/Mail.
ls -al /home/debian9/Mail
total 40
drwx------ 7 debian9 debian9 4096 Apr 25 17:50 .
drwxr-xr-x 65 debian9 debian9 4096 Apr 25 17:59 ..
drwx------ 2 debian9 debian9 4096 Apr 24 11:08 draft
drwx------ 2 debian9 debian9 16384 Apr 25 17:39 inbox
-rw-r--r-- 1 debian9 debian9 0 Apr 25 17:50 .mh_sequences
drwx------ 2 debian9 debian9 4096 Apr 24 11:08 queue
drwx------ 2 debian9 debian9 4096 Apr 24 10:47 sent
drwx------ 2 debian9 debian9 4096 Apr 24 11:45 trash
claws-mail find some email in my /var/mail and /var/spool/mail and change the format ,saved them in .mh_sequences. The displayed email are all in .mh_sequences.