Mailboxlayer offers a free JSON API for instant email validation and verification using SMTP, syntax checks, typo checks and suggestions, free and disposable provider filtering, an email quality score, and more. The system is REST-based, secured by 256-bit HTTPS encryption, and is designed to aid developers and businesses in fighting fraudulent users and increasing success rates of email campaigns.
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.