Email doesn't need postage, right? Is that old hoax about the postal service charging per message finally coming true? Not really. But PostageApp may be a service worth paying for if you want to send email from your application.
SparkPost announced a version of its SparkPost API that is fully compliant with the upcoming GDPR in the EU. SparkPost EU is hosted in Europe as opposed the the US where the original API is hosted. The EU version brings compliancy as well as lower latency and increased performance to EU customers.