I have recently starting using Mail.app with two email accounts (work and home). Every now and then I send email while having the wrong folder selected, and the default "from" account will be not what I expect. Are there any extensions or tips to make the currently selected "from" jump out at me in the compose window if it's not the 'default' from address? In other words, 99% of the time, I use my main account, but if I accidentally open a compose window with the alternate account, I'd like a different background color in the compose window, or some big flashing icon or something. The problem case happens because I was reviewing a folder in the non-default account. Any ideas?
Mail.app has the ability to flag in red any e-mail address (in the To, CC, BCC fields, or From pull-down menu) that does not match a particular domain ending.
If you go to Mail -> preferences -> Composing and enter your primarydomain.com in the "Mark addresses not ending in:" field.
I use this all the time for exactly what you are asking for.
if primarydomain.com is in this field, then the when your secondarydomain.com e-mail address is selected in the from menu, it will display in red. This calls my attention to it and I can make the decision to change it or send.
The drawback is that any contacts who are not at the same domain as you will show up in red in the To, CC, and BCC fields. I have gotten used to it and don't find it distracting any more. also you can put multiple domains in here "@example1.com, @example2.com, etc'
The purpose of this setting? If you worked at example.com, you would place example.com in this field. Then, whenever you e-mail somebody outside the organization, their address shows up in red, calling your attention to the fact that this e-mail is addressed to people no in your organization.
Hope that helps. I's not exactly what you wanted.
You can easily switch accounts from the pop-up in a new mail message, see below.
Sorry, new user, not allowed to post my screen capture, but it is easy to find, just below the CC or BCC field and just above the body of the message, on the left
To avoiding hassles sending from the wrong account with multiple mail accounts the only satisfactory way I have found, I have multiple addresses from not just multiple domains but also within one domain, so the clever thing with highlighting different domains with colour does not work for me, is as follows:
Create a real email account that does exist, for instance email@example.com, and set it up so that it works.
Once set up set after working so it appears in the available list of default mail accounts from which to send, set it as your default account. Then open Mail preferences, edit that account and chose 'None" from SMTP server list for that account so you cannot send email from it, by mistake or otherwise. Save, and voila, you cannot send email from the wrong account.
It does mean you have to select the account you want to send to each time, but since the embarrassment of using the wrong account outweighs the hassle, for me, it is worth it. If you hit send without spotting it you just get the SMTP server list or the choice to edit your message, and so choose the right From account after clicking Edit Message.
I wish Apple would have a blank field, or Null, for the default send account, that would solve this problem more elegantly.
I would also like an easy way to switch sending accounts. I use two different ones regularly. In SL, I could set up a hotkey to change to the non-default account. That no longer works with Lion.