Vesper is a WhatsApp API gateway that provides a simple REST API for sending messages, managing WhatsApp sessions, receiving real-time webhooks, and managing groups. It supports multi-session management and is designed for developers and businesses.

How do I integrate WhatsApp into my app?

With Vesper, you can integrate WhatsApp in 3 steps: 1) Create an app and get your API key, 2) Start a WhatsApp session by scanning a QR code, 3) Send messages using a simple POST request to the REST API.

What is the pricing for Vesper WhatsApp API?

Vesper offers 3 plans: Starter at €29/month (1 app, 2 sessions, 5K messages), Pro at €69/month (3 apps, 10 sessions, 25K messages), and Enterprise at €149/month (10 apps, 50 sessions, 100K messages). All plans include a 7-day free trial.

Does Vesper support multiple WhatsApp numbers?

Yes. Vesper supports multi-session management, allowing you to connect and manage multiple WhatsApp numbers simultaneously. Each session has its own QR code pairing, auto-reconnect, and health monitoring.

Can I receive WhatsApp messages via webhook?

Yes. Vesper provides real-time webhooks for all WhatsApp events including message received, message sent, message delivered, message read, session connected/disconnected, and group events. All webhooks are HMAC-signed for security.

Vesper — WhatsApp API Gateway for Developers

1. Introduction

Vesper ("we", "our", "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our WhatsApp API Gateway service (the "Service"). By using the Service, you consent to the data practices described in this policy.

2. Information We Collect

2.1 Account Information

When you create an account, we collect your full name, email address, and password (stored as a bcrypt hash). If you subscribe to a paid plan, we collect billing information through our payment processor (iyzico).

2.2 Usage Data

We automatically collect information about your use of the Service, including API requests, session activity, message counts (not content), IP addresses, browser type, and access timestamps. This data is used for rate limiting, billing, and service improvement.

2.3 WhatsApp Data

When you connect a WhatsApp session through our Service, we process WhatsApp session credentials and message metadata. We do not store the content of your WhatsApp messages beyond what is necessary for delivery and webhook dispatch.

2.4 Cookies

We use essential cookies for authentication (JWT tokens) and language preferences. We do not use tracking or advertising cookies. You can manage cookie preferences through your browser settings.

3. How We Use Your Information

To provide, maintain, and improve the Service
To process transactions and send billing notifications
To send transactional emails (account verification, password reset, support ticket updates)
To monitor usage and enforce subscription limits
To detect and prevent fraud, abuse, and security incidents
To respond to support tickets and customer inquiries
To comply with legal obligations

4. Data Sharing and Disclosure

We do not sell your personal data. We may share information with:

Payment processors (iyzico) to process payments
Email service providers (Brevo/SMTP) to send transactional emails
Infrastructure providers (Hetzner) for hosting
Law enforcement when required by applicable law

5. Data Security

We implement industry-standard security measures including encrypted data transmission (TLS), hashed passwords (bcrypt), API key authentication, rate limiting, and HMAC-signed webhooks. However, no method of transmission over the Internet is 100% secure.

6. Data Retention

We retain your account data for as long as your account is active. Usage logs are retained for 90 days. WhatsApp session data is deleted when you disconnect a session. Upon account deletion, we remove your personal data within 30 days, except where retention is required by law.

7. Your Rights (GDPR)

If you are a resident of the European Economic Area (EEA), you have the following rights:

Right of Access — Request a copy of your personal data
Right to Rectification — Correct inaccurate or incomplete data
Right to Erasure — Request deletion of your personal data
Right to Restrict Processing — Limit how we use your data
Right to Data Portability — Receive your data in a portable format
Right to Object — Object to certain types of processing

To exercise these rights, contact us at privacy@vesper.dev.

8. International Data Transfers

Your data is processed and stored on servers located in the European Union (Hetzner, Germany). We do not transfer your personal data outside the EEA unless necessary for service delivery, and only with appropriate safeguards in place.

9. Children's Privacy

The Service is not intended for individuals under the age of 18. We do not knowingly collect personal data from children. If we become aware that we have collected data from a child, we will take steps to delete it.

10. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of material changes by posting the updated policy on this page and updating the "Last updated" date. Your continued use of the Service after changes constitutes acceptance of the updated policy.

11. Contact Us

If you have questions about this Privacy Policy or wish to exercise your data rights, contact us at:

Email: privacy@vesper.dev