colleges joining sharepoint sites

[Allinilla]

Is there a way, either via powershell or the Entra ID/Azure admin portal to disable mail verification for our colleges when they are invited to a sharepoint site? 

to specify: we will be building aproximately 600 sharepoint sites and it is going to be a nightmare if our 70 employes have to go through 2 steps via Outlook to join these 600 sites.

Excuse my English - I am from DK 

[#2]

we will be building aproximately 600 sharepoint sites

I am wandering why you need building 600 sharepoint sites?

[#3]

@Allinilla 

See whether this can help:

https://learn.microsoft.com/en-us/sharepoint/turn-on-external-sharing-notifications

[#4]

we would like to maintain a file/folder structure we had with our previous cloud provider - it is necesarry for us to be able to control permissions of the 600 files and folders within the 600 customers and thus building the sites seemed like the best way to control it.

[#5]

thank you very much :) but I am not sure that´s what I´m looking for - we would like avoid the 2-step process for the employes which is a mail invitation to first "see outlook grous" and then "add to the teamsite"