Electronic Communications to People in Israel During Their Shabbath

Avodah
1

Is it permissible to send electronic communications to people in Israel
during their Shabbath?

Does it make a difference whether the communication is via e-mail, fax,
text (SMS) or WhatsApp?

David Havin

2

If you know they won't break shabbos to read it, or at least you don't know they will break shabbos to read it, then I don't see a problem. "Ee ata metzuveh al shevisas keilim". It's not shabbos for you; it is shabbos for the remote instrument that you are manipulating, but that is not a problem. The same would apply to operating a waldo that's in a place where it's shabbos; it's shevisas keilim, which BH says is not a thing.