I need to be able to send SMS messages to my Israel cell phone number for an employer-mandated 2FA authentication code.

I'm running into a problem.
According to this list of email-to-SMS gateways, it should be possible to send an email to 10digits@shiny.co.il (e.g. 0512345678@shiny.co.il) in order to send an SMS to a Partner subscriber's phone. However it's simply not working for me: no SMS is received, and email delivery eventually fails.

Is there an updated, known-working email-to-SMS gateway for Partner subscribers?