Excuse me, if this is the wrong section. I need your advice for a good gateway to send SMS, because the one I used to work with doesn't function perfectly. A lot of sms are not delivered. If anyone know a good gateway to send SMS, please, help me.
Do you know the email gateways for the numbers you need to reach? If there's only a small collection of providers that you need to contact, then you could just send the emails yourself. I've found that routing emails to SMS works best through major email carriers like Gmail -- less likely to get blocked.
I don't need to send emails. SMS-gateway is needed for telephone verification. Thats why it is essential that sms reach customers from as many countries as possible.