Sorry, but it's not ghosting to me if they're ignorantly refusing to use anything else than this piece of crap software despite any explanation and help to install another one. Unless they're technically that challenged, that they would need years to understand it. I would accept nearly ANY other messenger, which i would install too. Once had viber installed just because one friend was slovakian and it's their thing there. But not WA. To me it's integrity, i couldn't look in the mirror if I'd be installing what i despise. Like a vegan eating meat not to offend someone.

I know, most people don't care about those things at all. But I do. And i hate, that the worst companies always win the races. I can't hate AND support it at the same time.

Of course email serves a different purpose. But that's beside sms the only alternative that's most likely already installed/available. I get a message on my messenger whenever i receive an email on any account, so i least it would be little lag for me.

check out deltachat! it's for messaging.... over email!