Fix #114 Sender email without name

[fdaugan]

Handle the original from having no name. Assumption: originalRecipient = [email protected] Previously supported forms:

• from = Betsy <[email protected]> and customFrom = "" -> from = Betsy <[email protected]>
• from = Betsy <[email protected]> and customFrom = "[email protected]" -> from = Betsy <[email protected]>

Additional supported forms:

• from = [email protected] and customFrom = "" -> from = betsy at example.com <[email protected]>
• from = [email protected] and customFrom = "[email protected]" -> from = betsy at example.com <[email protected]>