-au FileType text,markdown,mail,gitcommit,mediawiki,vimwiki setlocal fo+=n
+au FileType text,markdown,mail,gitcommit,mediawiki,vimwiki setlocal formatoptions+=n
+au Filetype mail setlocal formatoptions+=o
+" Add | for block quotation, such that gq respects it
+au Filetype mail setlocal comments+=n:\|