Shortwave email client will show AI-powered summaries automatically

Shortwave, an email client built by former Google engineers, is launching new AI-powered features such as instant summaries that will show up atop an email, a writing assistant to echo your writing and extending its AI assistant function to iOS and Android, and multi-select AI actions.
The startup introduced AI-powered summaries last year, but you had to tap a button to generate that summary. Now, with the new instant summary feature, the client shows the gist of an email or a thread in one sentence automatically.
You can tap on that sentence to generate a slightly longer summary and even …