Proposed changes to a source code generated by client computing devices are integrated with a master version of the code resident on a server computing system remote from the client devices. The client devices connect to the server system over a network and transmit proposed changes to the server system, where resident integration/conflict resolution software automatically integrates the proposed changes into the master version. Any unresolved conflicts remaining after the automatic integration are identified and the server system automatically sends an email notifying the one or more client devices that there are unresolved conflicts. The email includes a link that enables a client device to launch a window on a monitor, and the client device user employs the window to transmit commands directly to and receive further communications directly from the integration/conflict resolution software in an interactive operation to attempt to manually resolve the conflicts.