txtNation offer a white-label version of our online bulk sms sender simply by embedding an IFrame into your website. It is mobile responsive and you can host it anywhere with no restrictions.
The sender is benchmarked to handle 2000 messages per second, however, this is also dependant on which route you are connecting to via txtNation's SMSC. txtNation's SMSC can perform unlimited load balanced routing to match the throughput you need. Please let us know if you need a high throughput.
txtNation operate dual data centre redundancy, with both Firewall and Load Balancer redundancy.
We understand that you might not want your clients to know that it is a txtNation service so we have 2 versions of the sender, one with a domain that is purposefully not published on txtNation domains to avoid search engines linking it to us, and another on a txtNation branded domain.
Using the Color variable, e.g. "color=ffffff", in the IFrame code you can match to your website.
Below is an example of the txtNation domain hosted version: