Question about gifting from email.

You don't make much sense, but I'm assuming you want to know whether you can gift from inventory as the first case and giving a gift by email as the second case. For the first case, no you can't. For the second case, it will show the gift in your inventory until it has been redeemed.

When you send a Steam gift via email, there will be an option to accept or decline the gift and after that, an option to keep it in the inventory or directly link to the account and start download.

You can choose to store it in your inventory. Also, just for future reference: Its not allowed to do this on steamgifts.