Buttondown has had the ability to upload a custom share image for your newsletters, if you were willing to design or find one that you wanted to use. For example:
Today, we’re adding two templates that get automatically filled out based on your newsletter’s name and the subject of your email.
They’ll appear alongside other options for your share image, and you can use them instead of designing your own!
For more of the technical details on how we built this, head over to the accompanying blog post.