C# WhatsApp Bulk Sender App

Job ID: 39846003

Budget: $10 – $30 USD

I need a lightweight Windows Forms application in C# with single job is to send one message to many phone numbers through WhatsApp. non official API
The workflow should be straightforward: I open the program, load a list of numbers from excel file,
type (or paste) the message once, hit Send, and watch a progress bar or simple status log as each chat message is sent.

The app may launch an embedded Chromium window or my default browser—whichever you find more stable—to handle WhatsApp Web.
A short configurable delay between sends is important to avoid triggering WhatsApp rate limits.

Keep the UI minimal; clarity and reliability matter more than design. Clean, well-commented code and robust exception handling are essential. Please deliver:

• A ready-to-build Visual Studio solution with all source files.
• Any required automation assets (e.g., Selenium WebDriver, Chromium binaries) bundled or referenced.
• A concise README explaining setup, usage, and how to adjust the contact list or message text.

Acceptance criterion: I will launch the exe, submit a 10-number sample list, send a test message, and see every chat receive it automatically after one initial QR scan.
please submit your final bid
Related categories: C# Programming Visual Studio