Thank you for choosing Mackerel.
As stated in the title, we will stop encrypted communication via TLS 1.0 on June 6th, 2018 (Wednesday).
Reason for stopping
TLS 1.0 is an outdated encryption protocol and several vulnerabilities have already been confirmed.
In response to this, Mackerel has decided to stop TLS 1.0 communication on June 6th, 2018 (Wednesday).
Browsing for mackerel.io will no longer be available with older OS/browsers that do not support TLS 1.1 or later. Additionally, use of the Mackerel API will no longer be available with older OS/OpenSSL environments.
We apologize for this inconvenience, but we believe that providing our service in a safe environment is of great importance and we hope that you will understand.