Looking for logging into the Apple Imessage site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Apple Imessage site. After that you can login as usual with your login credentials.
https://support.apple.com/en-us/HT204053
https://support.apple.com/explore/messages
https://support.apple.com/el-gr/HT204408
https://support.apple.com/el-gr/HT201422
https://developer.apple.com/imessage/
https://support.apple.com/el-gr/HT207006
https://support.apple.com/el-gr/HT201349
https://support.apple.com/en-is/HT205064
https://www.apple.com/support/systemstatus/
https://selfsolve.apple.com/deregister-imessage/
https://support.apple.com/el-gr/HT206906
https://www.imore.com/how-set-messages-your-mac
https://www.imore.com/imessage