Most of the time, due to the default time zone in webmail, mail sorting issues occur. Here is the perfect solution for changing the time zone and date format in webmail. Follow the following steps to solve the webmail time zone issue.
The time zone and date format can be changed in webmail by going to Settings, Click Preferences, Select User Interface Click Time zone Select the time zone in the dropdown (GMT +05:30) Asia/Kolkata for the Indian user. date, time format also the option to change after all click the Save button. Image Reference is also attached below. please check. hope this will help you to change the time zone and date format in webmail.
The question related to Webmail Issue.