I just received a last minute email from the John Jacob campaign. It was a letter from his wife. The email had a graphical banner at the top. The banner was the campaign logo and a picture of Mrs. Jacob.
If you click the banner, you end up at the website for the company that sent the email rather than the Jacob campaign. There is no link to the campaign website at all in the email.
My email reader hides images in email messages by default. The "alt" text is "The Ginormous MailChimp Sale." So, instead of a picture of Jacob's wife, I'm treated to an ad for MailChimp.
If I were on the Jacob campaign I would be furious. I'd also be looking for a new email company.