what FTP module should i use instead of squat that is probably no longer supported or no longer at all?

i want to upgrade my dovecot installation. it currently uses squat but i found it often crashes on FTS on large mailboxes.

i found "xapian" addon for dovecot but while it works excellent AFTER database is created, i found it need like 20 or so minutes to index less than 10GB of mails and while doing this - generate many tens of megabytes/s constant write traffic on it's database files.

Excellent way of killing SSD.

something must be broken.

my config is

plugin { plugin = fts fts_xapian

     fts = xapian
     fts_xapian = partial=2 full=20 verbose=0

     fts_autoindex = yes
     fts_enforced = yes

fts_autoindex_exclude = \Junk

fts_autoindex_exclude2 = \Trash

}

any ideas?