Your company runs a holiday email campaign for the month of December to drive newsletter signups. Which of the following metrics would be the best indicator of the campaign's success?

Google Analytics IQ exam: Questions & Answers  (updated for 2016).

Contact at : amarsinghinsights@gmail.com for further details

Your company runs a holiday email campaign for the month of December to drive newsletter signups. Which of the following metrics would be the best indicator of the campaign's success?