NeverBounce vs Sandbox: What are the differences?
What is NeverBounce? Real-time email verification and email cleaning services. Using only real-time verification, NeverBounce offers the highest accuracy. No historical data used. Under a penny per email. We’ll beat any major competitor’s pricing.
What is Sandbox? Quick and easy mock RESTful API and SOAP webservices. Quickly mock RESTful API or SOAP web-services with simple or dynamic responses, and fault injection to simulate real application behaviour.
NeverBounce belongs to "Email Validator" category of the tech stack, while Sandbox can be primarily classified under "API Tools".
Sandbox is an open source tool with 161 GitHub stars and 28 GitHub forks. Here's a link to Sandbox's open source repository on GitHub.