As a list-owner, I've typically issued multiple GETs
via email (but you can do it thru the web int'f):
INDEX listname
then based upon the return email (perhaps using an editor to
copy/paste/edit the output of the INDEX):
GET listname LOGyymm
...
Then save those returned notebook emails as a file w/i a folder
(and maybe ZIP it). Of course saving (copy) the folder to a 3rd
party site (google drive, amazon drive, box, dropbox, etc). You
may want to delete the emails since they may use your system's
quota.
YMMV
Pete