Hello, there.
We can help you add new features to Etivi, including mass sending, chat bot, webhook, CRM integration, and more, leveraging technologies such as React.js, Typescript, and PostgreSQL.
We have years of experience in website design, graphic design and logo design (photoshop, illustrator), banner design, brochure design, 3d design(Blender, 3d-max, WebGL).
Please, review our experience here - https://www.freelancer.com/u/webbookstudio.
We will be glad to chat with You and discuss your task. Waiting for Your reply! Best regards.