The MailChimp Ruby Sample Code by MailChimp demonstrates how to interact with the API. Steps include to clone code, run bundle installation, paste Api Key, and run rails in the server. Authored by JesseDp.
SendGrid announced its latest endpoint for its Web API: v3/mail/send. The endpoint rounds out the v3 release that began last year. With the new send endpoint, SendGrid has realized its goal of complete API management via API. All of the v2 functionality remains available with additional features.