Canada's Postmaster General purchased "Deerhound" in 1907 at a cost of some $65,000 to act as a mail tender for transatlantic steamers. Renamed "Lady Evelyn", she met ocean liners in the Gulf of St. Lawrence to transfer mail to and from trains at Rimouski, Quebec in order to speed its delivery. She replaced "Rhoda", an older and smaller ship that had previously performed these duties. In 1914 "Lady Evelyn" was involved in the rescue of survivors from when that ship sank following a collision off Rimouski.