The publication has teamed up with online magazine distributors Exact Editions and subscriptions marketing company Dovetail to offer the service at no extra cost from this week's edition onwards.
The new offer will also include access to an online archive dating back to July 2005.
Ben Greenish, managing director of the Spectator, said: "We've responded to our reader's desire to have access to the Spectator in all its glorious forms."
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