Suppressing dis-engaged profiles can improve your open/click rates and lower your Klaviyo costs
Since one of the factors in Klaviyo's pricing model is the number of "active profiles", it's best practice to suppress profiles that are no longer actively engaging with your emails. When you're using Opensend to grow your email list, you can use segmenting to suppress un-engaged profiles to lower your overall Klaviyo cost.
For example, you may consider suppressing profiles that have never purchased and not opened or clicked an email within the last 60 days (this criteria is an example - define your criteria based on your business and target profile volume).
Suppressing a profile is not the same as deleting it, so you can always re-activate these profiles later if you want to include them in a large campaign, for example during BFCM or the holidays.
There are even some automated AI solutions that will suppress profiles for you based on user behavior. Ask your Customer Success Manager or Opensend support if you're interested in exploring these, and we'd be happy to introduce you to solutions being used successfully by other Opensend customers.
Here are some useful articles from Klaviyo to understand their pricing model and how to suppress un-engaged profiles when needed: