Step 1 of sending a mailing in CiviMail has a single field to enter called "Mailing Name". In my Firefox browser, AutoComplete suggestions for the input field include a variety of contact names and other poor choices for a Mailing Name.
I believe this is because the source code for the input field assigns the input box properties (id and/or name) generically as "name" in the following HTML snippet:
<input maxlength="128" size="45" name="name" type="text" id="name" class="form-text huge required" />
This then matches with other unrelated input boxes also called name.
My suggestion would be to replace the "name" property values to something more specific like "mailing_name"