Use the definite article.
The following does not include the Comunicación section.
(f) = female; (m) = male
email
closing (in a letter)
printer
message
screen
greeting
keyboard
computer
scanner
tablet
to attach
to download
to get online
to get (a job/position)
to hire
to interview
to send
to be ready/willing
to prepare a resumé/CV
to apply for (a job)
to upload
Dear
Sincerely