Communication is essential for any successful collaboration, and your project management tool can help you communicate with your client regularly and effectively. You should update them on the project status and progress, ask for feedback and approval on your deliverables, respond to their questions, comments, and requests, notify them of any changes, issues, or risks, acknowledge their concerns and expectations, and express your appreciation and gratitude for their cooperation. Additionally, it's important to use the appropriate communication channels and formats for your project. For instance, you can use chat, email, video call, or phone call depending on the urgency of the message. You can also use text, images, audio, video or code blocks depending on the type and purpose of the message.