Just a GPT wrapper.

Google Postmaster Tools is probably the single most important piece of data you have to understand how your emails are being received regardless of what ESP you actually use. (Even more so, after the bulk sending update earlier this year.)

Despite this, it is… kind of awful to work with?

So…we're fixing that!

Whisperglass began as a project within Buttondown (we manage thousands of custom domains, and have invested in lots of internal tooling to make that easier). It's been really useful for our needs, but the universe of folks whose lives would be improved by its existence is (to sound like a dork) orthogonal to the universe of folks who would be good Buttondown users, so we're baking it out into its own product.

How much will it cost?

Our goal is to make Whisperglass free for everyone who casually uses it, and affordable for everyone else. Behold, a SaaS pricing grid: