If I want to include an image in a mail, I have the WYSYWYG CKEditor which enables me to do that.
But how can I include an Image in a CiviMail Header ?
CiviCRM Stack Exchange is a question and answer site for administrators and users of the CiviCRM Constituent Relationship Management software. It only takes a minute to sign up.
Sign up to join this communityIn the headers and the footers you don not have the convenience of a WYSYWYG editor. So you have to write HTML. An example of including the logo in the footer is:
<br/>
<img src='https://<site>/sites/default/files/logosite.png'/>
However you can create an example mail in de WYSYWYG editor and then use the Source button to examine the generated HTML code. Use this as an example and copy the relevant code bits.