Compared to eM Client for which you pay once per version and it had ~20 months between last versions. The cost for Spark is more than twice that of eM Client.

Compared to eM Client for which you pay once per version and it had ~20 months between last versions. The cost for Spark is more than twice that of eM Client. A subscription model should enable them to set a lower price as their revenue will be more reliable. Make it $9.99/year instead and I'm in.