Fidelius simplifies sending and managing multi-channel communications with a unified API and powerful tools. Send SMS, emails and WhatsApp messages from your application with a few lines of code, while guaranteeing high deliverability and an optimal user experience.

Manage all your communications using a single API

Fidelius simplifies the sending and management of transactional and marketing messages via SMS, WhatsApp and Email. Thanks to a Unified API, you automate your customer interactions without technical complexity.

A single entry point for three key channels

SMS – Fast, efficient and essential

SMS is ideal for critical communications requiring high visibility.

  • Fast shipping and reliable on all mobile networks
  • Types of SMS : transactional, notifications, marketing campaigns
  • Status tracking : delivered, read, user response
  • Taking into account regulatory constraints
WhatsApp – Engage your customers in real time

WhatsApp is a powerful channel to engage users through instant and interactive messaging.

  • Sending and receiving messages
  • Support for WhatsApp approved templates
  • Managing chat sessions
  • Ability to include InfoPages for quick actions
Email – Flexible and automated communication

Emails allow you to transmit detailed information to your customers.

  • Transactional sending (invoices, order confirmations, etc.)
  • Mass campaigns with dynamic personalization
  • Advanced tracking : opening, clicks, bounces
  • Unsubscription management and GDPR compliance

Why Choose Fidelius?

Save Time

Unify your communications without multiplying integrations.

Performance and deliverability

Automatic optimization to avoid spam and guarantee fast delivery.

Security and Compliance

Advanced management of API keys and compliance with regulations (GDPR, WhatsApp Business Policy, etc.).