Can I deposit cash directly into a Thai bank account at the counter?

Transfer from where ? If from Thailand just do it at any ATM.

Set up a telephone banking account. When I transfer money to my green bank I just call them and transfer

Do you have WISE

If not download and use that . Very cheap for transfer

Yes, you can and it's totally FREE.

In this case, it will be a deposit, not a transfer.

Get the first and last name of the person who wanna send the money to, the name of her bank and her bank account number.

Just whidraw the amount of money needed on your side.

Then go to any branch of her bank with the infos and just make a deposit of the cash money on her bank account, providing her first and last name and bank account number, that's it.

It takes five minutes, they make you fill up and sign a small paper (you get a receipt) with the amount, date and everything on it.

And I say it again, IT'S FREE.

So you have the money in cash? Just get their bank account details and pay it in at the counter. Not really a transfer if you have it in cash

I use wise transfer form any account to anyone using an email address and to be fair the rates are rather good 👍

Go WU easy and quicker

Yes you can, but you have to pay a fee.