It's about 1 000 per day. But I want to do it during all over the day.
Now I understand what whas my trouble (I think), I use 7 servers. I think cause of limits on every server it sends just 21 e-mail's then all adresses marks as unsend. It was main problem.
I thoutgh that issue was cause of my E-mail's looks like spam (high speed sending) ~ 20-50 in minute (I think).
If problem not in this please help to understand what I do wrong.