Spryng is a Dutch messaging provider that started with appointment reminders for healthcare. It says it is ISO 27001 and NEN 7510 certified, is a Google RCS partner and a Meta Business Solution Provider, and its RCS API page places it in the Esendex family.
Pay per message with no setup or monthly fees. Indicative SMS prices are €0.07 for the Netherlands and €0.069 for Belgium and Germany at average volume, with lower prices for larger volumes on request. Credit can be bought from 100 SMS, and new accounts get free test credit.
Spryng has no iMessage, which is Linq's main channel. Both offer SMS and RCS. Spryng also sends WhatsApp through its main API, while Linq's WhatsApp is a separate beta API. Spryng charges per message; Linq charges a flat monthly fee from $260 for Pro.
Dutch and Belgian healthcare, logistics and e-commerce teams that need certified SMS, RCS and WhatsApp.