seven is an SMS-sending API from Germany. It lets you send and receive text messages with your customers over SMS, WhatsApp and other messaging services, and contact numbers can be validated against an HLR database before you send.
German hosting makes seven a European alternative to American messaging APIs and keeps customer phone numbers inside the EU. Pay-per-use pricing without a monthly commitment suits small applications as well as larger senders.
Pricing
Pricing works on a pay-per-use model, at 0.075 euro per SMS sent worldwide.