If you are having reseller hosting or vps hosting or dedicated server account then you can follow the steps mentioned below to have webmail interface changed from Horde to Mailenable of your Windows hosting account.
If you want to change the webmail interface, you can change it through the "Mail settings" option of the corresponding website.
Go to "Plesk panel >> Domain >> Mail settings >> Webmail" and there you can find MailEnable and Horde option for the webmail interface.
