Run Automation When Blog Post Publishes?

Have you had a look at `BlogPost.BeforeUpdate` ? You may then be able to check things such as context_v2_automationTrigger.Arguments.IsPostEnabled and context_v2_automationTrigger.Arguments.PublishedDate in the automation. 

We use these kinds of checks when blogs are posted on the element14 Community to synchronise the actual publish date with the current date when a blog post is published from draft, as otherwise the blog publish date ends up being when the draft was first created, but these properties may help steer you towards acting on the blog's intended publish date to know when it's published.

Christopher G. Stanton said:

We use these kinds of checks when blogs are posted on the element14 Community to synchronise the actual publish date with the current date when a blog post is published from draft, as otherwise the blog publish date ends up being when the draft was first created,

That's an awesome idea, thanks for mentioning this, Christopher G. Stanton! That situation is a common struggle for members who are not as familiar with posting blogs, this is a great idea to alleviate that issue. 

Christopher G. Stanton said:

We use these kinds of checks when blogs are posted on the element14 Community to synchronise the actual publish date with the current date when a blog post is published from draft, as otherwise the blog publish date ends up being when the draft was first created,

That's an awesome idea, thanks for mentioning this, Christopher G. Stanton! That situation is a common struggle for members who are not as familiar with posting blogs, this is a great idea to alleviate that issue.