Please check if the feature has not already been requested.
If not, please describe it

Event Management
Control of events, where various warnings come to a one incident.
https://en.wikipedia.org/wiki/Event_Management_(ITIL)

Photo of items (computer, monitor, network, device)
A photo of items (computer, monitor, network, device) would be useful.
Perhaps a photo per model.
An example can be found here https://discoict.com.au/features/device-management.aspx

New rule criteria for mail receivers
For us it would be really helpful to be able to make sure the mails sent to our receivers e-mail address are only sent to that address (with optionally other recipients in the CC). This would ensure that if one in the CC answers to all (and thus also to the receiver's address), I can block the creation of a duplicate ticket.
Suggested criteria: number of TO-recipients
The rule would thus look like this:
Criteria
* To email header - is not - receiver@email.address
OR
* Number of To-recipients - greater than - 1
Action
* Reject email (with email response)

IM/Chat Feature to Create/Update Tickets
Users could initiate a chat session to make a new request or update an existing ticket using an IM/chat feature. When the chat session is finished an option could exist to create a ticket from the conversation or be added as a followup to an existing ticket.

Phone IMEI
Hi,
Where are we supposed to enter the "IMEI" of mobile phones ? Nowadays there are two IMEIs, I think a new "IMEI" and "IMEI2" fields should be introduced.

Create a new docker official image :)
Je pense qu'il serait pertinent de créer une image docker pour un déploiement plus rapide de GLPI.

Automatic action run days
Automatic actions run period only allows for start time and end time.
Unfortunately we have no option to set the run days in which the automatic actions run on.
As an example we would like the ability to set the closeticket automatic action to only run Monday-Friday.

Response Time (SLAs)
Thanks.

Improve booking
1/ User should be able to ask for a reservation by a simple form. He only add to choose a type of hardware, a begining and end date and a free field for comment. Helpdesk would after that attribute a specific material and validate that it is attributed to the user.
2/ We need a global view with the free/busy materiel at a specific date.
3/ We need a option to validate that user returned the materiel and an alerte when user did not return it passed the predicted date.

please add pgp support
Hello, it would be very nice if you add pgp/gpg support to sign/crypt/encrypt mails like other tools (eg otrs). Nowadays you don't know if that mail from our (IT)-Support or from somewhere else, so when it signed you know that. The same with encryption, when you write a ticket it is sometimes very helpfull to encrypt the mail (eg for password or tokens).
best regards
Service d'assistance aux clients par UserEcho