Ability to override from and to addresses to be different

[billgonemad]

When using the grails.mail.overrideAddresss the from and to addresses are both overridden using the same address. There is no way to set a different address for each of these if using the override config.

Proposing splitting the overrideAddrewss into different config properties

• grails.mail.overrideToAddress
• grails.mail.overrideFromAddress