Sign-Up.to creates marketing tools to help businesses grow by engaging their audience. The Sign-Up.to API provides a RESTful interface for customers to automate processes including managing subscriptions, managing email and SMS campaigns, analyzing results, and gauging ROI.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.