Plesk has two installed email managers, which we can interchange at will, these are Horde and Roundcube.
It also allows us to configure at the subscription level, so we can select which domain uses one manager or another, without the need for our changes to affect our entire server.
To select the manager first:
We access our Plesk panel.
We will access our subscription.
We follow the route Mail >> Mail Settings.
In the Webmail section, we select the manager and apply it.
