Hey @Dang Le, thanks for bringing this question to the community!

Defining a period of disengagement can often feel tricky. If you’re wanting to ensure people have received a minimum number of emails as part of evaluating this, here’s what I’d recommend:

Add a condition to that segment that states “has Received Email at least # times over all time”

One thing I would also encourage you to evaluate is whether or not someone has opened at least 1 email within the last 180 days. A 6 month period (180 days) should give you a broad enough window to account for inconsistent email sending patterns, where 3 weeks or a whole month might go by before you send the next campaign email. That can help you get a better sense of where the engagement ballpark boundaries lie for your audience, and you can refine the time period from there. Sidenote: having at bare minimum, a Welcome Series and Customer Thank You flow live provides helpful infrastructure to keep your list warm while you find your best rhythm of campaign sending.

If you want to evaluate clicks also, I would use an OR condition to join the “has Opened Email” and the “has Clicked Email” conditions. You’ll get a broader group of people that way, unless you’re intentionally focusing only on people with 0 opens AND 0 clicks within the specified timeframe. Just know, there’s a much higher percentage of people opening emails, who might not click a link every single time. 

Hopefully this helps! I’m also tagging a few other people who might have further insight for you. @KatherineB @Ashley I. @Brett_Gatsby @Kylie W @Bobi N. @Akers Digital @retention @In the Inbox @Omar 

Warmly,

Gabrielle

Klaviyo Champion & Marketing Lead at ebusiness pros

@ebusiness pros - this is a great point!

Sidenote: having at bare minimum, a Welcome Series and Customer Thank You flow live provides helpful infrastructure to keep your list warm while you find your best rhythm of campaign sending.

Totally agree with @ebusiness pros response! While it’s not possible in Klaviyo currently to segment by disengagement like that, you could specify something like this: 

In the last 180 days has received at least X # emails (whatever the minimum would be that you might send for that time period) and has opened 0 and clicked 0 in the last 180 days. You could also specify how long they’ve been on your list - for example, subscribed to X list more than 90 days ago AND has received at least X number of emails AND has clicked 0 in the last 180 days and opened zero in the last 180 days. 

Thank you, everyone, for very helpful guidances. Creating many segments the above ways and refining them is the approriate way to do in my case. Anyway, I still hope that Klaviyo's product team will add something to segment didn't engage over the last X number of emails, and keep things simpler.
Wish everyone a great day!