Weird <style> tag added to any outgoing email

Hi!

If I create/send a new email, emClient adds some weird data to the email html code:

=20 blockquote.cite { margin-left: 5px; margin-right: 0px; padding-left: 10px;= padding-right:0px; border-left: 1px solid #cccccc } blockquote.cite2 {margin-left: 5px; margin-right: 0px; padding-left: 10px;= padding-right:0px; border-left: 1px solid #cccccc; margin-top: 3px; padding= -top: 0px; } a img { border: 0px; } li[style=3D'text-align: center;'], li[style=3D'text-align: center; '], li[s= tyle=3D'text-align: right;'], li[style=3D'text-align: right; '] { list-sty= le-position: inside;} body { font-family: Arial; font-size: 10pt; } .quote { margin-left: 1em; margin-right: 1em; border-left: 5px #ebebeb soli= d; padding-left: 0.3em; } a.em-mention[href] { text-decoration: none; color: inherit; border-radius:= 3px; padding-left: 2px; padding-right: 2px; background-color: #e2e2e2; } ._em_placeholder {color: gray; border-bottom: 1px dotted lightblue;} ._em_p= laceholder:before{color:gray; content: '{{ ';} ._em_placeholder:after{color= :gray; content: ' }}';}

This css code affects my email marketing platform, as it contains some double “{{ }}”.

How can I avoid adding that css? I actually don’t know what it means and why is added to my emails.

Thanks