@rarpia 

Great question!

The complexity of your email flows can really depend on your marketing goals.

If you’re aiming to boost open rates, creating conditional splits based on customer behavior and preferences would be a super game-changer. Klaviyo offers endless possibilities for customization beyond the standard 5-7 flow email sequences that a lot of people use.

A lot of those advanced flows such as you described are created after visualizing the ideal customer journey, which requires a proper understanding of your market space and goals.

This is part of the reason why you see that “no two marketing guru’s” complex email sequences are ever the same.

I recommend that you visualize your ideal customer journey and map it out with charts to determine how you want actions to unfold. This approach can make a significant difference in personalizing your flows to match your customers’ needs and if done right can be a game changer for your brand.

For example: You might add a split condition where the preference indicates a subscriber is interested in props or accessories.

You can also use Klaviyo's dynamic blocks to tailor content based on these preferences. Alternatively, utilize customer preferences and profile properties to create tailored messages.

One of Klaviyo's goals is to help users understand where each subscriber or customer is in their journey with the brand. This is why Klaviyo provides the right tools within their system to help understand and achieve this.

Here are some fantastic resources from Klaviyo to get you started:

https://help.klaviyo.com/hc/en-us/articles/115003872171
http://www.klaviyo.com/blog/marketing-automation-strategy
https://help.klaviyo.com/hc/en-us/articles/7655965301531

Feel free to reach out if you have more questions or need further guidance.

The possibilities with Klaviyo are limitless!

Thank you so much for taking the time to reply in such depth. 
I’ll read the articles you shared.

Thanks again!