IgorG Plesk addicted! Plesk Certified Professional Jan 22, 2017 #2 You create email addresses on domain and each this email address is handled by one instance of webmail software - Roundcube or Horde. So, you need to create additional email addresses for your domain, but not for your "existing webmail".
You create email addresses on domain and each this email address is handled by one instance of webmail software - Roundcube or Horde. So, you need to create additional email addresses for your domain, but not for your "existing webmail".