Help: Worldwide SMS Campaign agency/aggregator required

I had this email in today from a reader looking for some assistance.

Have a read:

I’m currently contracting into a large global email esp – one of their global clients has requested help with sms campaigns – across US, Latin America, EMEA and Asia pac.

Can you recommend any agency/software provider that might be able to help?

I’ve been in touch with 2ergo (lacked the global reach needed) already.

Cheers

Who do you suggest?