Right, and beyond the value proposition of the email service, you are also serving your customers _by_ being profitable. Because this suggests that your service will be around in many years and hopefully won’t change in ways that users won’t appreciate (which is common with funded companies these days).

That's definitely the plan! One of the SaaS providers we use recently did an "upgrade" and now our team is struggling with everything being much slower and worse than it was before. It was a good instructive point to tell everyone in our all-hands Quarterly meeting yesterday that we are that SaaS for many others, and we have a responsibility to keep providing them a good service.