We use SendGrid for transactional email, but handle (solicited) bulk email in-house. The centralization of email is at least partly due to the fact that ensurin

We use SendGrid for transactional email, but handle (solicited) bulk email in-house. The centralization of email is at least partly due to the fact that ensuring email gets delivered is difficult and time-consuming. While I'm sure a lot of SendGrid's customers don't want (or don't know how) to configure a mail server, there are other customers who know that delivering email isn't as simple as installing Postfix. The rise of centralized email services is the inevitable byproduct.