using signup module with Mime Mail module

Hello,
Would like to have advice on when i using the Mime mail module enable to styling the signup confirmation email following occur.

1. All the email send out show in user inbox with attached icon. I didn't try to attached to anything on the confirmation email. Any advice. Why is that doing that?

2. Also, html email limited my length of the sentence. Here how this show up in my email
"Case Studies: Clinical Discussion on Pulse Diagnosis and Herbal
Prescriptions" The sentence come up break last word in the email.

Any advice.

Thx