Spark is an email client for Mac, iPhone, iPad, and Apple Watch from that’s developed and supported by Readdle, the people behind other popular apps for Mac and iOS/iPadOS, including PDF Expert, Spark, and Scanner Pro.
Spark’s polished user interface and extensive feature set make it a popular choice among people and teams that have standardized on Apple devices. What sets it apart is its collaborative features. Among other things, emails can be created, reviewed, and discussed by team members. It’s even possible to create a link to an email that can be shared by people who aren’t using Spark.
Spark’s OmniFocus integration makes it easy to transform emails into OmniFocus actions on both macOS and iOS/iPadOS.