Words for a real moment
How to support someone who lives far away
Distance limits what you can do in person, not whether you can offer one useful and genuine point of contact.

Words you can use
A ready-to-send version
Different postcode, same care from me. I can listen for ten minutes or simply send a quiet hello. Say yes, no, or nothing at all — I will follow your lead. If today is not right, that is completely fine.
A useful approach
Acknowledge the distance, then offer one thing you can genuinely do from where you are.
Give them a choice between a brief chat and a message they can answer later.
Leave the offer open for today; do not send another message until tomorrow.
Make it fit your person
Change the relationship, timing and tone
No name is needed. Optional details are not stored.