What are all the Retry algorithm present for SMS Delivery and what is the default one (i.e How many times EasyLink will attempt to make delivery to a number)
EasyLink does not handle the actual delivery of SMS messages. It is passed off to various aggregators depending on how your account is set up. That is not something that can be controlled in the API. You should discuss this with your Sales/PreSales team to determine who your SMS message will be sent to for delivery and what their retry algo is.