Ragwort, you'd be wrong on the sympathy texts people do send them. To be honest, I've even sent one. Like someone says before it depends on your audience. When my friend lost her baby 6 months into her pregnancy, she didn't wnt to talk to everyone at all-she just couldn't. She ripped up any cards and threw away flowers, not wanting the reminder. I sent her a text sending my sorrow and sympathy and telling her that I'd text again every week just to see how she was and that I was there for her any time she wanted. Our other friends did the same.
She appreciated those texts far more then being called when she didn't want to talk to anyone- she felt harassed at one point- and felt glad that she had no reminders lying around the house.
Sometimes people just need a here and now text rather then wait for a letter to arrive or get calls from people when they aren't ready to speak. It all depends on your audience. I know my friend, I've sent a text to another as well when I didn't really know there family member. For another close one, she needed that call rather then text so I called. I followed up that one with a card and flowers but not the others. Different people, different ways are etter.
People should always thank though, otherwise it's ungrateful.