Many thanks Kalahari12 . e tailer is a new one on me and answers the clue better than e mailer. I don't send in my completed crosswords but it bugs me if I haven't got them right!
Ndofu I only struck upon e-tailer today as I thought e-mailer was a bit too obvious and was thinking "what else would you call an on-line retailer?" Then a bolt of light hit me! Happy to help as it bugs me as well when I can not finish them.