Considering that HSBC is remarkably evil, even compared to other major international banking corporations, this might be a good nudge to stop doing business with them.

Why not just use SFTP?

FWIW, this is not normal or expected, most users get their notifications more or less instantaneously. Maybe knowing this might help you search for information about whatever it may be that prevents this from working for you.

The Line messaging app is ridiculously popular in Japan, to the point where people sometimes are genuinely confused by someone trying to explain that they don’t have Line on their phone:

https://en.wikipedia.org/wiki/Line_(software)

Sync, it has a very nice user interface, I’ve been using it for years (previously for Reddit).

Nice!

Now this is a feature that I have wanted to have since the very beginning!