Should I write enclosure on a cover letter?
Include a cover letter enclosure by writing Enclosure: (or Enclosures: if you have multiple documents) after your signature, and then listing all attached documents.
Is it OK to use hi in emails?
Though many people now see “Dear” as outmoded, it is a failsafe fall-back, and “Hello,” followed by the person’s name, is also acceptable. “Hi,” followed by the person’s name, has been on the rise for some time, and is considered standard in many situations.
Is it OK to say Dear all?
Dear all is perfectably acceptable. So is Dear Colleagues. It depends on how formal or informal you want to be, and what is normal usage in your workplace. If in doubt, do what appears to be normal practice.
Is Hello there rude?
There isn’t much difference, though “Hello there” is normally an interjection. It is often used if the speaker is surprised by the person to whom they are speaking. The full phrase is normally “Why, hello there”. You might hear someone say “Why, hello there!