Sharing contact details in a proposal is something new freelancers often try when they want to seem more accessible, but most platforms treat this as a serious violation. The rule exists because platforms earn money from transactions that happen on their site, and taking communication outside increases the chance of payments being made off-platform. Some freelancers try to work around this by hinting at their contact details without writing them out directly, which still carries risk. Have you ever seen a proposal get rejected or an account flagged just for including an email address?