Step 1: Login to your webmail > Click on gear icon in the upper right corner
Step 2: Select the Modern UI.
Step 3: The Modern Webmail will appear
Step 4: Once you switch to Modern UI you will have some new icons like mail, Calendar and Briefcase , Chat , Cloud Storage and Contacts.
Step 5: To find the other options like Signatures, Accounts, Filters, Blocked and Allowed Senders, click on the settings option in the upper right corner
Step 6: Now you will view the other options