Hey Kees!

 KvE> For reading you need some routine that presents folders and files

There is only one file for incoming msg's.  At present I am using a bash script
to display the msg's by it's line number in that file.  For example
'msg-read.sh 1' displayed the msg I am replying to.

 KvE> For writing som filter to collate the header and kludges.

Another bash script.  I call the one that is being employed to create this
reply 'myreply.sh'.  After vim is finished doing it's part the script will add
the header and kludges which will later get bundled into a pkt along with other
waiting msg's if there are any.

 KvE> Filally there is the tricky part, that the message has to be
 KvE> store in your message store.

I just keep backups of the original pkt's.  That way if there was any prblems
with them I can pass the word along if needed.  I don't have a BBS anymore -
not since the mid to late 1990's - so I don't really need any additional
storage.  Raw pkt's are fine.  No?

 KvE> smapi library of the husky project

Yep.  I am well aware of it along with the other libs required to compile hpt. 
I see you're using hpt according to your TID.

 KvE> I am still looking for the holy grail.

[bad heavy French accent mode on]
We've already got one.  It is very nice.
[bad heavy French accent mode off]

Life is good,
Maurice

... Don't cry for me I have vi.
--- GNU bash, version 4.4.12(1)-release (x86_64-bonnell-linux-gnu)