On occasion I need to send out a single Email to about 1000 recipients.

When I try I get an error message stating to many Email recipients (or
something to that effect). I have to limit the Email addresses to about 75
per Email so it take 10 -15 separate Emails to do what I should be able to
do in 1.

I do not know if that is a limitation of OE, Roadrunner, my firewall or
what.

Anyone know if such a limit exists in OE and if so is that an changeable
parameter?

If its a limitation of OE, can someone suggest a better mail reader?

TIA
Darrell