This study investigates the effects of including a recipient in writing instructions on the quality of writing produced by L2 English students. To evaluate the effect of the recipient, writing performances are first assessed in texts written in response to instructions that do not explicitly specify a recipient. They are subsequently compared to writing performances by the same students in texts produced for similar instructions but this time with an explicitly stated recipient. The results of the main experiment are complemented with test-taker surveys that capture the students’ own perceptions about the differences between the two tasks. The participating pupils are from two classes at an inner-city municipal Upper Secondary school in Sweden, one at level ENG05 and the other at level ENG07. The study is inspired by communicative language teaching where the writer’s adaptation to the recipient is central. The study tests for the recipient effect along a broad spectrum of linguistic and communicative measures. The results show that students in both classes performed at a higher level with an explicit recipient across all four communicative measures and two out of four linguistic measures. The study also identified a generally stronger recipient effect in ENG05 than in ENG07 and a mixed pattern when comparing students with differing abilities in English. The main finding of the test-taker survey is that students prefer doing tasks with a specified recipient but are slightly more familiar with tasks without a recipient. They also report that they rarely imagine an English-speaking recipient when writing a task and that they often write with the teacher in mind.