Yes, All outgoing emails can be Tagged before they are sent to the recipients.
* Compose your email as normal and click Send. EmailTags will display a screen.
* Enter the tag(s) you want to add to the email (you can add up to 6 tags)
* Choose your desired folder and click either “Send only”, “Send & Delete”, Send & File”, “Cancel Send”.
* Your sent email will now contain the tag you added above.