Electronic device and method of messaging meeting invitees

An electronic device comprising:

• at least one processor;
• and one or more non-transitory computer-readable storage medium coupled to the at least one processor and storing programming instructions for execution by the at least one processor, wherein the programming instructions, when executed, cause the electronic device to perform operations comprising:
• receiving, in a calendar interface of the electronic device, a first user input to compose a message for an existing event in the calendar interface;
• and outputting, at the electronic device, a message composition interface, wherein the message composition interface comprises an editable portion of an address field and an editable portion of a message field, wherein the editable portion of the address field is automatically populated with an address for each of a plurality of invitees associated with the existing event, and wherein the message composition interface further comprises a subject field that is automatically populated with data identifying the existing event.