I don't think there is such a thing called "gmail for domains".
If you have gmail at a custom domain, you aren't paying anything for it, and you've had it for 10 years or more like that... this is probably talking about you, yes.
The thing some of us have had for 10 years or more has been called different things at different points in Google history. Including "Google Apps For Your Domain" and "G-Suite" and "Google Workspace". Maybe it was called "gmail for domains" at one point? It's honestly been very confusing as google keeps changing how things work and what they are called and migrating my legacy free account along each time, with some services breaking etc., I almost feel like I'm finally being put out of my misery.
If you have gmail at a custom domain, you aren't paying anything for it, and you've had it for 10 years or more like that... this is probably talking about you, yes.
The thing some of us have had for 10 years or more has been called different things at different points in Google history. Including "Google Apps For Your Domain" and "G-Suite" and "Google Workspace". Maybe it was called "gmail for domains" at one point? It's honestly been very confusing as google keeps changing how things work and what they are called and migrating my legacy free account along each time, with some services breaking etc., I almost feel like I'm finally being put out of my misery.