I will be applying for a PhD this year. So, I would like to ask for recommendation letters soon. Should I ask for each recommendation letter separately, or may I group email all the letter writers? Is there any general benefits or caveats in either approach?
My primary supervisor would like me to stay for a PhD at my current university. So, the group email might make the case seem "more decided". I'd like to avoid any further discussion on staying, since I thought to do so earlier (kind of promised) but have changed my mind since. It might negatively affect the letter to some extent.