Percentage based Split for emails

[Anonymous]

I have a list of contacts and 5 different emails. I want to send each email to the 20% contacts. (Randomly). As of now, I manually split contacts into 5 lists outside Marketo and send ng email to each list. Is there any way to automate it?

[Anonymous]

Yes, create "Choices" in the Flow of your Smart Campaign. Like this:

[Anonymous]

Thanks for the reply. may i know what is random sample and how random sample work?

[Anonymous]

"Random Sample is 20" actually means carving out a randomly generated 20% of your whole Smart List and perform an action against them. Then go to the next step, take the next 20% and so on. The Default Choice - which is empty in my case on the screenshot - would take the rest.

If you want to dive deeper into the question how "random" this random step really is, you might read on here:
Some Tests on Random Sample Behavior

But from my experience with the random sample I'd dare to say it's random enough for most of your use cases. 😉