Now that I have mjmml working, I'm wondering if there's a way to bulk-add a list of emails to a mailing list?

Here's my scenario, and why I'm asking:
We run 10-15 relatively small lists, most about a dozen addresses, with our largest only about 125 addresses.  These are all "closed" subonlypost lists.  We occasionally add new lists, when projects come up, and sometimes retire (delete) lists once a project is done.

The idea of having to manually use mlmmj-make-ml to enter each address seems like lot of work.  It would be great if one could simply take an ASCII text file, with one address per line, and somehow stuff them all into the mailing list at once, rather than typing out a mlmmj-sub command 125 times.

In our situation we're not concerned about subscribers being able to self-subscribe, or self-unsubscribe, and we're don't normally use or need list archives. I'm not sure if these concerns make the idea of bulk-addition more difficult, but if there's any way to do this, it would make my life a lot easier.

[ I noticed after adding several addresses to a list, that they seem to appear in the /var/spool/mlmmj/listname/subscribers.d/ directory, each address ending up in a single-character-name file, based on the 1st letter in the address - ie. paul@me.com, peter@msn.com, etc. all ended up in a file called "p". Is it possible to use scripts to simply stuff addresses into these files, based on the 1st character in the address?  What would be the implication of doing this independently of the existing mlmmj-sub script? ]

With the old Majordomo, it was relatively easy for me to setup some PHP admin scripts that let me view/add/edit the list of addresses in an email list, and I'm hoping to do the same with mlmmj.

Philip

P.S. is there a procedure for deleting a mailing list? can one simply delete the .../mlmmj/listdir and all it's contents?