I have a weird question and I hope I am asking in the right place. Recently I checked some statistics on my website after a while and noticed that the number of email subscribers had jumped from about 100 to over 1200 which seems a bit odd to me.
The website in question is an e-commerce site selling vegetable and fruit seeds I coded from scratch, and since it's not really the season to buy seeds at the moment I thought it's quite unusual that I'm getting all these subscribers. At first I thought there might have been some error and the website maybe recorded someone's email a thousand times, but I checked and everything seems ok, no duplicate email addresses at all.
Furthermore, google analytics tell me that at the moment I'm getting 10-20 users on the website per day, but subscriber count goes up by 20-30 a day which is really odd to me.
My question is how am I getting all these emails? Is there some kind of bot that would insert email addresses as subscribers on websites, and if there is, why would it do that?