The word editors is a common plural noun. It requires no apostrophe.
All newspapers have editors.
In the example you gave, "Dear Editors", there is no apostrophe.
If you are addressing the residents as a group, it would be Dear Residents. Most ordinary words are made plural by simply adding an s to the word. Apostrophe s usually indicates the possessive. It is mind blowing how pervasive this misunderstanding of the apostrophe is. Where are the teachers?
You would say "Dear Doctors" you wouldn't put the apostrophe.
The punctuation in the sentence "Dear Vivian, how's summer going for you?" are inverted commas, a comma, an apostrophe and a question mark.
The plural form of the compound noun editor-in-chief is editors-in-chief.The correct plural possessive form is editors-in-chief's.
The word fathers is the plural form of the noun father without an apostrophe.When an apostrophe is added, the noun is the possessive form:father's is singular possessive (My father's name is John.)fathers' is plural possessive (Our fathers' names are John and Bill.)
To just address more than one pastor, you do not need an apostrophe.Instead, write Dear Pastor (name) and Pastor (name).Or, Dear Pastors (name and name).Dear Pastor Smith and Pastor Jones.
editors refusal
the editors of twitter
No. A spider is a spider and an apostrophe is an apostrophe.
you've is the apostrophe of you have
The apostrophe for "they had" is "they'd".
Dear Camel Questioner, There is no need for an apostrophe before every 'S' in every word. Please take note and revise your grammer. Yours sincerely, The grammer police.