There is quite a difference in 1000 five times a week and 300k+ every day
. I'd recommend probably going with some sort of a dedicated email mailing list type of provider.
Sorry. Did not see the "k" after 300. Must be typing with my eyes closed.
There is alot of difference between 300k and 1k. Sometimes I need to send 3k emails out and I have seen some servers like yahoo email temporary deferring my emails. The email queue will be very long if I am sending out 300k emails because of the block.
How to prevent yahoo or gmail from blocking/deferring any domain sending out 300k emails??