There used to be a dollar sign right next to the paper clip sign you use to attach files, but it attaches money instead. Genius. But I would ask other American friends to send me money that way instead of venmo and they would tell me they don't have that option available to them. Once I would send them 5 cents, then they would get the money attach option, but not before.
I'm not from the US but I've never seen that option either. Must be just a select few countries.
I have emailed money through Gmail for two years now. Apparently no more...
What were the previous limits you were allowed to send?
It might not have ever launched in your locale, perhaps. I used it a few times to send money to another person in the USA. For what it did, it was exceedingly simple and easy to use.