I would suggest adding a command button labeled - SEND. This is usually better that coding the ON EXIT property of the last txtUSERINPUT box. ( And avoids them sending an incomplete form)
Now, here is the code I use in EXCEL to have supervisors email a worksheet directly to me. This is the VBA sub in tied to the the ON CLICK|EVENT PROCEDURE:
------Code Starts--------------------
Sub SendSheet()
X1 = Range("E1"

.Value
X2 = Range("H1"

.Value
Xf = Range("A65536"

.End(xlUp).Row
strRecipients = "YOUREMAIL@SOMECOMPANY.COM"
ActiveSheet.Copy
ActiveWorkbook.SendMail strRecipients, "Mo Stat Rpt: " & X2 & " from: " & X1
ActiveWorkbook.Close False
MsgBox "You have sent the " & X2 & " report to Brad via EMAIL", vbInformation, "Email Confirmation"
'Range("E" & (Xf + 1)).Value = "This report was Emailed to BRAD"
End Sub
---------snippet ends---------
Since you're working in WORD, you may want this code snippet. I used this in a vb application to have users email updates to me. It call the OUTLOOK object and can be used in an ON CLICK|EVENT PROCEDURE bound to a command button.
-----Code Starts----------------
Private Sub Email_Request()
'open Outlook and send me a pre-formatted email with update info
'create new message
Set objOutlk = CreateObject("Outlook.Application"

Set objMail = objOutlk.createitem(olMailItem)
objMail.To = "YOUREMAIL@SOMECOMPANY.COM"
objMail.subject = "Phone Book Update Request"
'add body
strMsg = "Last Name: " & vbCrLf
strMsg = strMsg & "First Name: " & vbCrLf
strMsg = strMsg & "What needs Corrected: " & vbCrLf & vbCrLf & vbCrLf & vbCrLf
strMsg = strMsg & "** Your request will be processed in the next" & vbCrLf
strMsg = strMsg & "update...please be patient...I update records" & vbCrLf
strMsg = strMsg & "approx. twice a month. <Brad>**"
objMail.body = strMsg
'this previews email prior to sending
objMail.display
'this send automatically
'objMail.display
Set objMail = Nothing
Set objOutlk = Nothing
End Sub
---------Snippet Ends-----------
HTH...Brad
P.S. These two snippets are modified from other code I found on the net...Props to the original authors...whoever they are.