Many things to improve

Badge icon does not always work and remains free of new mails count until you open the app.

Mails sometimes are opened slowly.

One view with all inboxes from different accounts together is missing for convenient usage for multiple mailboxes connected.

Select all is missing.

Selection of “send from” is not working properly and does not allow to select any mailbox to send from but just two out of four configured...

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zanderlv83 about Gmail - Email by Google, v5.0.171119