By killing Inbox, Google is leaving many users without a comparable fallback solution, even though it's arguing Gmail has the same features as the defunct client. Readdle is using this as an opportunity to bring Spark, its popular email client, to Android with hopes it will fill the gap left by Inbox's demise.

I've been using Spark on my Mac for a while, and I'm very pleased with the way it combines advanced functionalities with an intuitive interface, and how it's designed to improve productivity. I've spent some time with its Android counterpart, and here's my take on what it brings, what it lacks, and whether you should consider it to replace Inbox — or your current email client.

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