Crossword Puzzle Mail aid

Clue: Mail aid

Time frame for some important mail deliveries (OVERNIGHT with 9 letters)
Sent an e-mail to someone in addition to the main recipient (CCED with 4 letters)
Country mailing addr. (RFD with 3 letters)
Ambassador's aides (ATTACHES with 8 letters)
Accept, as Certified Mail (SIGNFOR with 7 letters)
Mail holder (ENVELOPE with 8 letters)
Faxes or e-mails (SENDS with 5 letters)
Authors' aids: Abbr. (AGTS with 4 letters)
E-mail ancestor (TELEX with 5 letters)
Santa's incoming mail (LISTS with 5 letters)