When I tried to send dashboard subscription to Slack, the image is capped at 10 columns. I know it is mentioned somewhere in the docs, but is there any way to change the limit? Thanks!
That is currently hardcoded, along with several other values, but there's a request to make some of those into variables.
https://github.com/metabase/metabase/issues/4564 - upvote by clicking on the first post
Though, in this specific case, there's some limitations in the size of Slack images, so I doubt that it will be possible to allow a lot more column without being truncated anyway.