You can easily create a billing item upon sending an email within AppColl. You are able to send emails directly from a matter details page, a task details page, an invoice details page, or a contact details page. For more on this feature, click here. 

1. From within a matter details page, a task details page, an invoice details page, or a contact details page, click the Email icon. 

2. The New Email popup window will open. Follow the instructions as indicated in the link above to send an email if you wish. Select the Create Billing Item checkbox. 
3. Click the Email button. 

4. Fill out or update the Email information as needed and click the Send button. 

5. Upon clicking Send you will receive a confirmation message. Click the Close button. 

6. The New Billing Item page will appear. Fill out the Billing Item information as needed and click Save. For full details, you may wish to reference the following article, starting with step 3, found here.