As an HTML email designer/developer, I've tried all the email clients. Astro has been my daily client on macOS & iOS for a year now, and I doubt that will change.

I've tried Polymail, Airmail, Apple Mail, Gmail, Outlook, Spark and Newton, among others. They're all pretty decent, and I did like Airmail for a while before moving to Polymail and then Astro. Newton didn't impress me for an app that requires a monthly/yearly fee.

What I really miss is Mailbox, the email client from Dropbox that eventually went extinct. The way it turned your inbox into a to-do list was really helpful, and some of what Astro does reminds me of that. I don't use the AI too much in Astro, but the email account setup process is incredibly simple because of it.

Curious to see if this includes the Gmail app for Android and iOS. CSS support is coming for "Gmail and Inbox" but that's about all the info we have for now.

Just as I started to lose faith that this website would load, "Error establishing a database connection."

Occasionally I have to use Photoshop to grab assets from a client's PSD file, and it always reminds me why I stopped using Photoshop a long time ago. Simple actions are unusually difficult to perform, heavily layered files slow my computer to a crawl, and the overall interface is a nightmare. Why anyone voluntarily uses Photoshop at this point is beyond me.

I started using Sketch a year ago and switched over completely as my daily graphic design software about 6 months ago and couldn't be happier. As a web/mobile designer, it has everything I need, and it's designed to do what I need it to do quickly and easily. Before Sketch, I was using Fireworks, a product Adobe saw fit to acquire from Macromedia years ago and then slowly kill off, but not before charging customers for minor updates over the course of 3 or 4 years.

Adobe doesn't give a crap about you, the designer. Some employees at this very large corporation might care, but the company doesn't. It's just the nature of the beast. And as long as Photoshop is the Swiss army knife of design software, it's going to be the decent at a lot of things but good at none.

That said, if you like Photoshop, by all means go ahead and buy into the latest software updates. But don't be surprised if other people on your design/development team eventually start resenting you for sending them a PSD rather than a Sketch file or an EPS that can be imported into Sketch.

I'm surprised no one has mentioned CoffeeCup's excellent Responsive Email Designer software for Windows & Mac.

https://www.coffeecup.com/email-designer/

It's still in the early stages of development, but it's the one of the best tools out there if you're looking to code your own responsive emails without any of the usual online templating tools (all of which I've used as well).