As whenever any user comments on your blog they use their email address to comment on your blog with some other specific fields like Name, Website, etc. Well, there are numerous reasons for exporting the email addresses from the comments section. 1. You want to grow the Email list. 2. Increase high conversion rates(From Email). 3. The direct appeal to your target audience. You can go through this to see the step by step guide to the export email address from WordPress.