排名没有先后。
iCloud 居然没支持 IDLE....虽然 XAPPLEPUSHSERVICE 效果也不错就是了。
imap.exmail.qq.com
IMAP4 IMAP4rev1 XLIST MOVE IDLE XAPPLEPUSHSERVICE AUTH=LOGIN NAMESPACE CHILDREN ID UIDPLUS
imap.gmail.com
IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 XYZZY SASL-IR AUTH=XOAUTH2 AUTH=PLAIN AUTH=PLAIN-CLIENTTOKEN AUTH=OAUTHBEARER AUTH=XOAUTH
imap.mxhichina.com
IMAP4rev1 IDLE XLIST UIDPLUS ID SASL-IR AUTH=XOAUTH AUTH=EXTERNAL
imap.263.net
IMAP4 IMAP4rev1 XLIST ID UIDPLUS
imap108.cn4e.com
IMAP4rev1 UIDPLUS AUTH=PLAIN
imap.zoho.com
IMAP4rev1 UNSELECT CHILDREN XLIST NAMESPACE IDLE MOVE ID AUTH=PLAIN SASL-IR UIDPLUS ESEARCH LIST-EXTENDED LIST-STATUS WITHIN COMPRESS=DEFLATE LITERAL- ACL
imap.zoho.com.cn
IMAP4rev1 UNSELECT CHILDREN XLIST NAMESPACE IDLE MOVE ID AUTH=PLAIN SASL-IR UIDPLUS ESEARCH LIST-EXTENDED LIST-STATUS WITHIN COMPRESS=DEFLATE LITERAL- APPENDLIMIT=10485760
imap.yandex.com
IMAP4rev1 CHILDREN UNSELECT LITERAL+ NAMESPACE XLIST BINARY UIDPLUS ENABLE ID AUTH=PLAIN AUTH=XOAUTH2 IDLE MOVE
imap.163.com(same as imap.126.com)
IMAP4rev1 XLIST SPECIAL-USE ID LITERAL+ STARTTLS XAPPLEPUSHSERVICE UIDPLUS X-CM-EXT-1
imap.sina.com (same as imap.sina.com.cn)
IMAP4rev1 ID
imap.189.cn
IMAP4 IMAP4rev1 XLIST ID XAPPLEPUSHSERVICE AUTH=KERBEROS_V4
imap.139.com
IMAP4rev1 XLIST ID RM_MAIL_TYPE UIDPLUS
imap.mail.me.com
pv33p00im-iscream023 1822B45 XAPPLEPUSHSERVICE IMAP4 IMAP4rev1 SASL-IR AUTH=ATOKEN AUTH=PLAIN
imap.outlook.com
IMAP4 IMAP4rev1 AUTH=PLAIN AUTH=XOAUTH2 SASL-IR UIDPLUS MOVE ID UNSELECT CHILDREN IDLE NAMESPACE LITERAL+