Emails sent via Gmail Alias being reported as SPAM

When sending emails via an Alias in my Gmail account through EMClient a high number of my mails are marked as SPAM.
When sending using the exact same alias directly in my gmail account through a browser, the emails are sent fine.
I can only add one image as a new user, so here is the one sent via emclient. When sent via Gmail web I get a score of 10/10