Expression rule for Email Address

Question

Hi All 
 I have a CDT in which the data is saved liked that:

id 
 interger

name 
 varchar

managerteamid 
 integer

s1assigne 
 varchar

s2assigne 
 varchar

s3assigne 
 varchar

s4assign 
 varchar

Now I want to get email Address which is in this manager Team id and all the assignees and then send the email to all . 
 How to write the expression to find the email Address for that and also help me how to write in send email smart service ? 
 
 Thanks

Mike Schmitt · Answer

There's a lot of detail left out here (how your users are set up, etc), but in general, if you start with an Appian username, you can get their email address (in plaintext) by using the "user()" function, i.e. user("myUsername", "email") (where "myUsername" is any given user's actual username). Note that you need to wrap any plaintext email address(es) in "toEmailAddress()" before it'll work in the Send Email node; alternatively, you can set the "to" field to point to an entire Appian Group and/or actual Appian Users and it will generally just work.