Regroup uses the SMPP protocol exclusively when we send out Text/SMS messages to our clients.
This allows us to not require any carrier information as we dial the cell phone directly from our phone bank and deliver the message directly to the cell phone itself.
SMPP is a direct connection to carriers and provides instant delivery using Short Codes which are exclusively assigned to us for our clients use.
In the past we offered a standard SMTP Text/SMS service also, but since 2013 we phased that service out and no longer use the SMTP protocal as it requires us to connect to the cell phone carriers SMTP servers and this at times can cause delay issues or non-delivery of critical messages.
Regroup is committed to being a leader in the industry and with that in mind we now exclusively use the SMPP protocal service as noted above.
This allows us to ensure that any and all Text/SMS messages are delivered to a cell phone or Text/SMS enabled phone that has signal. If the cell phone can receive a call then it will receive the Text/SMS message.