Carrier that allows free international SMS and keeps number without recharging?

I'm looking for a US carrier that offers a service similar to what I have with Telekom (German carrier). With Telekom, I can receive texts anywhere in the world without topping up my account, and they don't cancel my number even if I don't add credits for an extended period (I've never spent more than a year without adding credits, though).

I spend most of my time in the US but also travel to Europe and South America, where I use my local phone numbers on eSIMs. I'm wondering if there's a US carrier that would allow me to receive texts internationally without charging for it and, most importantly, keep my number active even if I don't recharge it for some time (the longer, the better).

I'm open to contract plans, but I would prefer a no-contract option if possible. Any suggestions or experiences with US carriers that offer this would be appreciated. Thank you!