I'm doing a job application, the address for applications is 'Francesca Jones, Sales & Marketing Director'.
My 'formal' training would say I should us 'Ms Bloggs' for the address and salutation. But my instinct (i.e. what I would personally prefer) is for Francesca Jones in the address, and Dear Francesca on the letter.
actually - can I throw a spanner in - if the application address is 'informal' I'd stick with their lead. I certainly address it to Francesca Jones but I'd hum and hah a bit of the salutation - maybe Ms Jones but probably Francesca.
I've just advertised a post in my team, giving my Christian and surname as contact details. Got an email application with the salutation 'Madame'! Not even 'dear Madame'!
I wouldn't advise that approach... personally I'd be happy with Dear first name or Dear first name last name.