Logic App Email Trigger - Large Volume Mailbox

Question

Hi,

I have a mailbox that which is used for receiving large volume of emails. These emails are sent out to customers and BCC'ed to this mailbox. Once the email is received, it needs to go through some processing before it is put on a blob storage, and the email then gets deleted from the mailbox.

I have planning to use Email trigger in a Logic App but I dont know how the email trigger works under the hood and how it would perform in a high volume setup.

My understanding is that each email will trigger a new instance of the workflow and there will be no concurrency issues in terms of two logic app flow instances try to process the same email.

Few other questions related to Logic Apps:

1. Would it be able to handle a large volume of email (40,000 email triggered all together)
2. What is max number of logic app instances that could run at a time?
3. What happens when it reaches to max number? would the trigger event sit in a queue to wait for the current instances to finish before a free instance could pickup the new trigger?

thanks,

abk