You can use Email feature in the Innoventry software to send the required document to the user in a efficient way.
Change the Gmail setting for Innoventry and Allow to the Send Mail
Open Your Gmail Account then Go to > Setting > Then click on > Accounts >
Click on > Google Account Setting
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Then Click on > Security
Disable 2 step verification
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Find the > Less Secure App Setting
Click on > Turn On access(Not recommended)
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Then Allow the > Allow Less secure apps:ON