Are there any plans to introduce this? It’s the most popular request and is 4 and a half years old.

Absolutely back this! The set up process for users who are migrating from another platform is immense, so this would help so much and make the initial thoughts on Missive much more positive!

I'd like to add my vote fro this feature! Thanks

One vote for this feature. Just add two options: "Run all rules" or "Run current rule" to execute only one rule.

Help Scout implements this with a "Apply to Previous" toggle on rule creation which seems like an elegant solution.

Yes!

Bump...this is needed, along with faster searching...

Yes please, let us apply rules to our older emails.

This would be amazing to have!

+1 - this is a huge feature for me. I have a lot of old email that needs to be organized and it's brutal to do manually, especially whenever I go make changes to the way I organize rules.