Problem inserting textbox.text into Outlook Email

Question

I have a form with a textbox where I can insert a message. Once I click a button to send message, an outlook email draft opens with my message and I can send the email from there.

One problem I found was that the message in outlook doesnt accept enters in my message.
For example:

this
is
a
test

The above message would show up on one line, "this is a test" in outlook.

Is there anyway to have it read the enters placed in as well?