In the order they arrived, from the first email after signup.
How often, when and how Slack emails its subscribers, measured from every email we received.
Every email Slack sent in its first month, grouped by the day it arrived.
Every subject line and preview text, in the order they arrived.
We captured 2 emails from Slack after signing up: onboarding and subscription update emails.
Its typical email arrived 29 days after signup, it sends with Amazon SES, its designs lean pink and blue and all of its emails use personalized.
Its subject lines run about 53 characters.
