Clojurians Log v2

For sending emails to users (sign-in links, daily yakread emails), I'm currently using Postmark for Yakread and Mailgun for another app (The Sample). The default in Biff is https://www.mailersend.com/ which I'm planning to switch to (it's cheaper, especially after Postmark got acquired and started jacking up their prices). For receiving emails (i.e. letting users make a @yakread.com email address and sign up for newsletters), I don't use any 3rd party services. I open port 25 on the VM and use https://github.com/voodoodyne/subethasmtp (with https://github.com/jacobobryant/yakread/blob/master/src/com/yakread/lib/smtp.clj).