Note: I asked the same question on serverfault, but it got closed as off-topic.
I want to include my brand logo in my emails. My brand logo does not appear in Yahoo mailbox, but I have noticed that some companies, like the example below, have included their brands in the email.
Here is what I have tried:
I have added BIMI record for our website:
https://www.mailkit.com/resources/bimi-inspector/shopless.co.nz
I have also added Gravatar for our emails:
I have also contacted Yahoo support, weeks ago, and followed up a couple of times. All they told me is that "their engineers are working on BIMI issue".
When I check the example above (Kijiji) I noticed that they neither have a BIMI record, nor a Gravatar. But their logo is still showing up in Yahoo. They must have tried a different approach that I am not aware of?
PS: I opened the email that I received from Yahoo support, in Yahoo mail, and their own emails didn't have any brand!
I'm not too sure about Yahoo as I personally do not use it nor have I ever tried to add a logo to a email before but yahoo and gmail tend to have similarities and I found a few links on the net that might help with your situation.
https://www.freelogoservices.com/blog/2018/02/15/how-to-add-a-logo-to-your-email-signature/
https://www.graphicsprings.com/blog/view/how-to-add-a-logo-to-your-email-signature-gmail-yahoo-outlook-and-more#:~:text=Navigate%20back%20to%20your%20Yahoo,save%20and%20you%27re%20done!