A method for facilitating creating one or more calendar entries in one or more client devices. The method may include includes receiving an iTIP message from a first client device associated with a first user and having a first calendar application. The iTIP message may be addressed to at least a second user, wherein the second user may be associated with a second client device having a second calendar application. The method may also include generating an iMIP message using the iTIP message. The method may also include providing at least one of a copy of the iTIP message and a copy of the iMIP message to a least one of the second client device and a second communication server device connected to the second client device for enabling the second calendar application to generate a calendar entry in the second client device.