Is it a correct sentence?
In this test we decided to test two different channels of communication - pop-up and email notifications - to get to know how each of them performs.
lisa87 In this tes t, we decided to test two channels of communication —p op-up and email notification s—t o get to know how each of them performs.
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lisa87In this test, we decided to test two channels of communication—pop-up and email notifications—to get to know how each of them performs.
lisa87In this test we decided to test two different channels of communication - pop-up and email notifications - to get to know how each of them performs.
Using the same word twice so close together is not a good idea. You might use 'experiment' or 'study' or 'examine'.
In this experiment we tested two channels of communicatio