In the order they arrived, from the first email after signup.
How often, when and how ThumbnailTest emails its subscribers, measured from every email we received.
Every subject line and preview text, in the order they arrived.
We captured 1 email from ThumbnailTest after signing up, all activation nudge emails.
Its only email arrived 3 days after signup, it sends with SendGrid, its designs lean purple and all of its emails use personalized.
Its subject line is 22 characters long.
