I used something similar before, not because of server speed but because of bandwidth issues and it worked ok for me
try it and see.
You will more than likely get better suggestions from others more able than I to answer your question.

In reply to Re^4: MIME::Lite::TT::HTML, time control for mass mailings? by Gavin
in thread MIME::Lite::TT::HTML, time control for mass mailings? by punch_card_don

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