I've communicated with a supplier and now they need me to provide my contact details for shipping costs. Is it safe to share my email, address, and phone number?

Awesome! Great work with starting on the negotiation with potential suppliers! You can provide your address. They will need this to calculate shipping costs. You can give the rest of the information if you do place the sample with them.

It's also important to ensure that you're communicating with a legitimate supplier. Always verify the supplier's credibility before sharing any personal information.

When it comes to communication, it's recommended to keep all communication on Alibaba to avoid waking up to lots of emails and people trying to reach out to you. This helps to keep all of the conversation in one place.