Are you using 3.0? If you are, you could inject the plugin where needed and do something like below. I'm referencing it as "instance.mailSevice" because I'm injecting it but the same can be done using getPlugin() where applicable.
1. Get a new mail object
<cfset var emailObject = instance.mailservice.newMail()>
2. Configure the object's properties. You can use the config function or setters. CFDUMP to easily see all the setters or look at coldbox/system/beans/Mail.cfc
<cfset emailObject.config(from = whatever1
,username = whatever2
...)>
3. Send the email
<cfset instance.mailservice.send(emailObject)>
PS. "coldbox/system/beans/Mail.cfc" may have type="int" references that don't work in CF8 or CF9. Change those to type="numeric" to get it working for now.
- Gabriel