Automatic change sent by

[ohm_g7]

I want to change sent by follow the account's inbox.
Example
Primary account : user@domain.com
External account : user@external.com

when I see mail in external account and I click compose mail.
I want in field "Account" automatic change to user@external.com

How I do
Please tell me,I can do or not?

Thank you for reply.

[fcash]

I don't think you can set this for new messages, but there are options that can be set on the Preferences -> Accounts page that will do this automatically for replies/forwards.

[ohm_g7]

If I create zimlet for do this,possible?

I don't know function onclick in zimlet
let be know about this.

thank you.