Who has the idea to turn off In_transit email in 1.7?

[Dakkar]

The problem of backfilling customers with e-mails, if I have searched the forum, has been dragging from at least version 1.5. After changing the status of the shipment to "shipped", the customer receives an email about this fact and after a while he receives another e-mail with the shipment number. However, not everyone wants to make a shit into customer mailbox, so we need to find a solution. And there are two ways to do this - turn off sending an e-mail in_transit or better - force prestashop to change the status of the shipment to shipped, after entering the shipment number. The question is how to do this? Someone has any idea?

Edited November 28, 2017 by Dakkar (see edit history)