A few days ago, I received a newsletter from the company at my Gmail address, and I do not have this company in my contact list. Usually the image of the avatar is empty when you receive a newsletter or e-mail from someone who you do not have in your contact list, but this time the company set the avatar in its newsletter.
Now to my question. Can I specify an image that will be displayed as an avatar on emails that I will send from my site? If so, how?
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