wifi calling Wi-Fi calling over Cellular Data

[2015corvettec7]

Hello!

 

The reason I'm writing this post is because I can't find any good information regarding this specific question online.

 

I'm going to be taking an extended trip to Spain this spring and I'm currently figuring out what I'll be doing for my tech needs (international plug adapters, SIM cards, etc;)

 

I have an iPhone 13 on Verizon in the US with my Verizon phone number, which also supports WiFi calling, and that feature has come in particularly handy in rural areas where cell service is crap.

 

 

My question is, if I have an unlimited data eSIM in Spain (through a provider such as holafly, for example) would I be able to send/receive calls and texts on my US Verizon number via "Wi-Fi calling"? Or do I have to give Verizon hundreds of dollars for an international plan.