Could you send me that?

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Across
  1. 3. say that something is correct or definite
  2. 4. free and able to talk or meet
  3. 6. back to someone contact someone later with an answer or more information
  4. 7. answer a message or email
  5. 9. add a file to an email or message
  6. 10. help someone remember something
Down
  1. 1. contact someone again about something
  2. 2. needing attention very quickly
  3. 5. send a message or email you received to another person
  4. 8. make something easier to understand