Currently, the From: address in the Evolution mailer is a drop-down list.  While this may work for most people, there are some who wish to customize outgoing email addresses on a per-recipient basis.

For example, instead of sending email as user@example.com, they may wish to send the email as user+website@example.com where website is a site on which they registered their email address.  If the user receives an unrelated email in the future to user+website@example.com, they would know that their email address was sold to a third party.

To facilitate this and other similar use cases, I am proposing a small set of changes to the Evolution email composer:

1) Change the drop-down "From:" label to "Identity:"
2) Add a new text field under called "From:"
3) View | From Field causes both Identity and From to be shown
4) When Identity is changed, the From text auto-populates
5) The user can edit the From field to any email address

6) Upon send, a confirmation dialog is shown:

---
Are you sure you want to send this message?

From: Joe User <user+website@example.com>

[ ] Do not show this message again.

[Cancel] [Send]
---

An option can be placed in Edit | Preferences | Composer Preferences | Alerts to make the confirmation dialog optional.


I have some experience with the Evolution code and am willing to put in some time to help implement this feature.  However, I would appreciate some help from the Evolution team, specifically to provide feedback and help push the patch through the development process.  Ideally, it would be committed in the 2.26.x tree so that I can use it with my current Fedora 11 distribution.