| http://www.w3.org/ns/prov#value | - Subject line #1: Let's be friends" Highest open rate with an increase over the other subject line of 7.59%Subject line #2: Join our social networkHighest clickthrough rate with an increase over the first subject line of 36.41%It is all about transparency, and the relevance [of the subject line] is sort of cute and makes people curious, she said.
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