This article provides the steps on how to manually send an e-mail from the Contact's page.
Go to Lines.
Select a Line then go to Settings.
Select the last tab Email Conversations (Beta)
Type your desired e-mail address.
Go to the Contact page and open the contact you wish to send an email.
On the lower right corner of the page, select the Line that you created an email address on.
Click on the E-mail link from the bottom of the screen.
Compose and send your email.
Note: Make sure the contact should have an email address on Aloware.