Some features of Themelia Pro allow you to set mail configuration parameters. You set them as follows:
<themelia.system>
<appInfo name="E-Finance" />
<emailSetup server="10.2.129.4"
username="MailServerWebUser"
password="w$@58784g43pih939#gJ"
from="no-reply@my-company.tempuri.org"
to="support@my-company.tempuri.org">
<parameters>
<add name="SomeParameter" value="SomeValue"></add>
</parameters>
</emailSetup>
</themelia.system>