SmarterMail is not recognized by Plesk as installed, or it is recognized, but is marked with "!".
Cannot create a mail account. Blank error is shown in Plesk. The following error can be found in Event Viewer:
SOAP failed. No additional info at (SmarterMail::checkResult line 177) at execute console command --add-mailname(vconsoleapp::start line 100) at execute "C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\bin\\mailmng.exe" --add-mailname "--domain-name=example.com" "--mailname=william" "--password=*"(vconsoleapp::run line 117)
C:\\Program Files (x86)\\Parallels\\Plesk\\admin\\bin\\mailmng.exe
SmarterMail is not configured.
Configure the SmarterMail site in IIS using the instructions from this article .
Make sure that SmarterMail service is started and works.
services.mscsnap-in can be used for it.
Enable SmarterMail in the Plesk: Tools & Settings > Plesk Components > Mail Server