Thanks for your previous response. I resolved the logo issue with the Link insert.
When selecting an image from post to Feature Image, the image shows up in newsletter, but looks like this:
Is it not possible for the height to be AUTO, so it fits proportionally?
Also, is there some way to send a custom email to the subscription list using this plugin? Like if I want to add a note or image in addition to the posts.
I look forward to your response. Thanks.