Are you posting your usage guide or asking question?
I assume "只讀取標頭資訊" is the "Fetch headers only" option.
引言回覆:
不選"只讀取標頭資訊", 不選"不刪除伺服器上的郵件".
每次"下載信件"時:
所有信件都下載到本機, mail伺服器中全被刪除.
That's obvious.
引言回覆:
選"只讀取標頭資訊", 不選"不刪除伺服器上的郵件".
每次"下載信件"時:
收件箱中信件只有載標頭資訊的, mail伺服器中存在.
收件箱中信件有完全資訊的, mail伺服器中不存在.
所以若你第一次下載後將一些信移出收件箱, 則下一次下載時會將移出的信件由mail伺服器中刪除.
(I assume "伺服器" means "server".)
If you
fetch header only, you will get the message list (header), but not the body of the message. Once you click that message, the message would be downloaded.
引言回覆:
簡單的來說只有標頭資訊的信件一離開收件箱, mail伺服器中的資料就會被刪除,
而有內文的信件要看"不刪除伺服器上的郵件"的設定.
That's an option for people to see the list of messages and not download the entire message (also have the option to delete them).