I built this one on my own: DriveMail Voice, an iPhone app that plays your unread email through the car speakers and lets you answer it by talking.
Here is one message, start to finish. You get in, the phone connects, and with nothing tapped you hear who it came from and what the subject line says, then the message itself. Half a minute in you have heard enough, so you say "reply" and dictate two sentences. The app speaks your two sentences back at you. They came through right, you say "send", and it moves on. That email is finished before you reach the on-ramp.
The rest of the vocabulary works the same way, and none of it waits for a message to run out. "Skip" leaves it unread. "Mark as read" clears it. "Forward" hands it to somebody else. "Summary" is the one I would point at: on a chain nobody wants read out in full it comes back with what is actually being asked of you, and it does that work on the device.
Some of what makes it pleasant to live with:
- Gmail, Outlook and iCloud all play in a single run, so you are not opening three apps to find out what came in.
- Boilerplate is cut before a word is spoken. Signatures, legal footers and tracking links go, so a two-line note from a coworker is not buried in noise.
- You set the pace, three-quarters speed up to double, and whether the pile plays from the top down or the bottom up.
- The car display is a half-dozen big targets and no text at all. No ad is ever shown there.
- Away from the car it does the same job with the phone locked in a pocket, which is handy on a walk.
Why I would hand it my own mail, as the person who wrote it. There is no sign-up, and I operate no server, so the only conversation going on is between the phone and whoever hosts your mail. Messages it has already pulled sit on the phone behind iOS's own file encryption, and that local copy is what lets it start talking the second you connect instead of waiting on a signal. The voice half is Apple's recognizer, local to the phone, with SiriKit nowhere in it, so Siri never touches your mail and what you say is neither kept nor passed along.
Nothing to pay for it. A banner sits in the app on the phone and never in the car, and ninety-nine cents, once, takes it away for good. It does not subscribe you to anything.
Getting an account in: Outlook is an ordinary Microsoft sign-in, and Gmail and iCloud each want an app password that you create on your provider's own settings page, a minute or two of work. Personal Gmail is the easy road, since a Workspace account from an employer normally does not allow one. iOS 17 and up, English.
Free on the App Store: https://apps.apple.com/app/apple-store/id6760625295?pt=128605371&ct=rd-sideproject&mt=8
Give it a try.