Hi Lina, if you still want to use the Ready to review trigger you could always add a Time delay (potentially based off of your average delivery time which if you’re using Aftership, you should be able to find through their platform) and then add a conditional split that checks if the customer has triggered the Aftership Delivery updates - Delivered metric since starting the flow. If they have, we can assume their order has been delivered and they can proceed through the rest of your current flow set up. If they haven’t, I’d set up another, longer wait node and repeat the above. 

I hope that helps, please let me know if I can help with anything else!

Thank you @liz.hayes for your answer. That’s a brilliant idea that I didn't come up :)

I was collecting reviews the usual way - sending an email with the link to my website. Just a very few customers left reviews. I am not sure if the review leaving method was inconvenient or it was something else. So, I am thinking of creating an A/B test to test the best time to ask a review. 

A - send time 2-3 days after the order was delivered

B - send time ~30 days after the order was delivered and giving some time to use the product.

My first question is if that’s worth trying and the second, if so, how would I setup the flow?

Hi Lina! You’re very welcome, let me know how you go with the new flow set up. 
When it comes to collecting the reviews, are you offering your customers some sort of incentive to leave a review? This could be a discount code or something I’ve found very successful, is a competition model where they automatically go into the running to win a larger gift card with monthly winners/draws. 

But yes you’re correct, timing is important! I’d consider what the use case is for your products - does the customer need more time to use and experience the product? If yes, then definitely give them more time before requesting reviews. 30 days sounds a little long (your customer might have disengaged by this point) but you know your product best so if that seems like a reasonable time frame than definitely A/B test different time frames to determine what aligns best with your product & customer. 

The set up for this would just involve adding a second conditional split after the conditional split that checks if the customer has triggered the Aftership Delivery updates - Delivered metric since starting the flow. Select to divide a random sample of your customers in half (50%) and then build out the different waiting periods into the Yes/No split. I’ve included some screenshots below but let me know if you have any further questions.