No, and no email provider can guarantee 100% delivery.
However, we take deliverability extremely seriously. That’s why we have partnered with Mailgun, one of the largest and most trusted email delivery platforms in the world. They are industry leaders who successfully handle over 400 billion emails every year for companies across the globe.
Partnering with them ensures your eCards are sent with best-in-class technology designed for high deliverability. Even so, some factors still remain outside of our control which can prevent an email from reaching an inbox.