AI meets email for Mac, iOS and Android


Modern email apps for Mac, iOS, Android, and Alexa, fully-integrated with Slack, and powered by artificial intelligence.

1/24/2018 UPDATE: New version of Astro launched! Check it out here:

7 Reviews
Gabriel Song
Lauren Holliday
Amal Alili
 +14 reviews
  • Geoff Schaadt
    Geoff SchaadtVP, TryCycle Data Systems

    It was awesome.


    It is gone.

    I've been a delighted user of Astro almost since launch. And now they have sold to Slack - and are immediately shutting down.

    Can anyone recommend a good email/calendar client?

    Geoff Schaadt has used this product for one year.
  • Howard Keziah
    Howard KeziahCEO, Impact Technologies Group, Inc.

    I think it would be useful


    Doesn't support Mac Mail. Deal killer for me.

    My mail client has to handle my personal as well as business mail. My life isn't neatly divided into work and non-work. All my personal mail is through my mac address. Not supporting that makes it worthless to me.

    Howard Keziah has used this product for one day.
  • Anders S. Mortensen
    Anders S. MortensenDesigner, copenhagen

    Easy and intelligent


    Only sync with google calendar

    Just switched to this email client both on my Mac and my iPhone. I'm very impressed with how easy this is to use without too many bells and whistles.

    I don't use the calendar though as I only use iCloud Calendar and not the calendar attached to my gmail.

    Anders S. Mortensen has used this product for one week.
  • Clint Williams
    Clint WilliamsCo-founder of

    This email app is (was?) hands-down, my favorite email app of all time.


    The search was a bit slow

    This email app was just beautifully designed and so easy to use.

    Clint Williams has used this product for one year.
  • Diego Navarro Salman
    Diego Navarro SalmanDirector Estrategia at HiLinks

    Stable, great design, lots of functionalities


    Email providers, background fetch on iOS

    Hope business model isn't subscription

    Diego Navarro Salman has used this product for one year.
  • Lauren Holliday
    Lauren HollidayJournalist with a marketing mindset

    Clean UI, So smart, Efficient, Pretty, Tracks emails!


    None so far

    I'm in love, and I HATE email clients. You have to try it to understand!

    Lauren Holliday has used this product for one week.
  • Simon van Kesteren
    Simon van KesterenGrowth marketing @

    Love the possibilities!


    None so far

    Very nice :-)

    Only thing I'm not a fan of is the app's logo. Looks kind of goofy in my dock, I'd prefer a more mail/envelope kind of logo.

    Simon van Kesteren has used this product for one day.