Netcore Email API (formerly Pepipost) is a cloud service for getting transactional and triggered emails into recipients' inboxes. You send either through an SMTP relay, suited to your own mail servers or applications that speak SMTP, or through an HTTP web API, suited to online portals and mobile apps. The service is part of Netcore Cloud and is delivered as SaaS. The software is not open source.
Netcore Cloud is based in Mumbai, India, and according to a company profile is a privately held company, Netcore Private Limited. According to its developer documentation, Netcore supports regional data processing and storage in the United States, India and Europe; an account is assigned to one of these regions so that all data is routed through the corresponding data centre. The documentation does not name the European city where that data centre is located. For a European organisation, an Indian vendor with an EU region is relevant: choose the EU region explicitly when setting up, and have the location recorded contractually.