A word that describes the polite phrases we use to begin our letters

How can we refer to the polite phrase used at the beginning of a letter (email in my specific context)?

For example, we may start our letter:

Dear Bob, I hope that you're well and had a nice weekend.

If we want to make reference to the line

I hope that you're well and had a nice weekend

in such a way that we could say:

I often wonder how to begin a letter of bad news, but my [interjection] stands genuine non the less

The term "interjection" doesn't seem like a good fit here. Is there a word that describes the polite phrases we often use to begin our letters?


Either 'greeting' or 'salutation' would fit.

From the online dictionary, meaning 3 is appropriate:

sal·u·ta·tion (sly-tshn) n.

  1. a. A polite expression of greeting or goodwill. b. salutations Greetings indicating respect and affection; regards.
  2. A gesture of greeting, such as a bow or kiss.
  3. A word or phrase of greeting used to begin a letter or message.

pleasantries
plural of pleas·ant·ry (Noun)

A polite social utterance; a civility: exchanged pleasantries before getting down to business.


Upon reading the question, my mind immediatly jumped to 'preamble'.

pre·am·ble
/ˈprēˌambəl/

A preliminary or preparatory statement; an introduction. The introductory part of a statute or deed, stating its purpose, aims, and justification. Synonyms preface - introduction - proem - foreword - prelude


I don't know of a word that describes this kind of remark (sentence) when it is made in a written context such as a letter. On the other hand, the term phatic is used to describe similar sorts of remarks when they are spoken. "How are you?" is frequently used as a phatic utterance; consider, for example, the telephone sales-person who greets you when you answer the phone with "Hello Ms Smith, How are you today?" The correct (social) response is "Fine, thank you", not a truthful answer that describes your state of well-being. The reason is that the question is phatic; that is (to quote the OED), "it serves to establish or maintain social relationships rather than to impart information, communicate ideas".