TASK DEFINITION: Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.
PROBLEM: Question: If I'm converting something from analogue to digital, I digitise it. What am I doing if I convert from digital to analogue? 
Answer: When I take a digital video or sound source and convert it to analog (for example by using a tape recorder to record an MP3) I am making an analog recording of the digital source. In earlier decades, recording a sound almost always meant making an analog recording by magnetic tape. For example, I might record a meeting with a tape recorder, or have a tape recording of a phone message on my answering machine. When digital recording started to become affordable and mainstream, the word digital was added to indicate that digital techniques were being used instead of the default analog (and of course for marketing reasons.) "Hey check out my new digital voice recorder, I can record a whole day of classes without having to change a tape!" Fast forward to today, and digital recording is standard, while analog is the unusual special case. Today, recording is assumed to be digital, unless you specify otherwise by saying it's an analog recording.

SOLUTION: no

PROBLEM: Question: I debated with my peers that we can use the word emails when referring to more than one and it would be grammatically right. But most of them said since we don't say we received mails today, similarly we won't say we received emails . Quick advice please. 
Answer: Dan Bron's comment (above) that e-mail/email at its inception was treated as a mass noun is correctand so is Kristina Lopez's comment (above) that e-mail/email is widely applied today not just to the medium of electronic mail but to individual messages sent and received in that medium. For many years the technology magazines where I worked enforced a strict house rule: e-mail (and later email) referred to "electronic mail" as a mode of communication, and individual messages had to be termed "e-mail [or email] messages." But three or four years ago, the overwhelming weight of popular usage prevailed, and we began to accept the use of email as a singular noun that could take an indefinite article, and emails as a plural nounboth referring to individual messages. It is probably not coincidental that other forms of electronic communication receive similar treatment in popular (and some publishing) usage: a text and texts for "a text message" and "text messages," respectively; and an IM and IMs for "an instant messaging message" and "instant messaging messages" (as I recall, people used to avoid "instant messaging message" by conflating the technology with the individual message to produce "instant message"). At publishing houses, the proper handling of "an e-mail [or email]" versus "an e-mail [or email] message" remains a house style issuethere is no universally agreed-upon preference. If you are beholden to no one's style guide, you are free to use the wording that you like better. But the overall tendency, I believe, is toward accepting an email and emails as collapsed forms of "an electronic mail message" and "electronic mail messages.".

SOLUTION: no

PROBLEM: Question: What is the mark of punctuation called that sometimes separates sections of a chapter with a glyph placed in the middle between the margins? It's hard to explain, but here's a picture. Does this have a name? (Yes, I know this is a asterisk. Sometimes it's three of them, sometimes it's a stylized graphic. I'm looking for the general name of the...methodology/practice (?) of doing this.) 
Answer: As explained by this page on Wikipedia, it's called a section break. I point you to the text of the annotation on the right side of the page where it pairs this term with the same kind of glyph you posted: Open pages of the book Alice's Adventures in Wonderland, showing an ornate section break on the lower left page created from asterisks. It is used to signal a pause for the reader and a transition in the narrative. And also the section on flourished section breaks: Space between paragraphs in a section break is sometimes accompanied by an asterism (either proper or manual * * *), a horizontal rule, fleurons, or other ornamental symbols. An ornamental symbol used as section break does not have a generally accepted name. Such a typographic device can be specifically referred to as dinkus, space break symbol, paragraph separator, paragraph divider, horizontal divider, thought break, or as an instance of filigree or flourish. Ornamental section breaks can be created using glyphs, rows of lozenges, dingbats, or other miscellaneous symbols. Fonts such as Webdings and Wingdings include many such glyphs. In HTML, horizontal rules can be generated using the hr tag, which generates a paragraph-level thematic break. For more ornate presentation, CSS can be used to replace the line with an image. As you've rightly acknowledged, the form a section break takes is entirely up to the person creating the publication.

SOLUTION:
yes