Mastodon has introduced a non-standard OpenGraph tag which they use to show author bylines in post previews. Enabling is means adding a meta tag to a post:
<meta name="fediverse:creator" content="@accound@fediverse.example" />
This looks pretty straightforward, especially for single-author blogs. And it’s a lightway way to bridge Write.as’s limited fediverse features. With author byline indicators, people who respond to a blogpost on the fediverse can also reply to the author’s account on a service which has deeper support for that sort of thing.
Eugen has indicated that this feature no longer requires manual opt-in: