E-mails don't sent

Guys, yesterday I created an e-mail, and there is some lag to sent all the e-mails.

I have a list with +900 e-mails, and just 200 e-mails was sent. I don’t know why.

This day I used only to sent this +900 e-mails and I have 1000 e-mails for free.

What’s happen?

Guys, yesterday I created an e-mail, and there is some lag to sent all the e-mails.
I have a list with +900 e-mails, and just 200 e-mails was sent. I don’t know why.
This day I used only to sent this +900 e-mails and I have 1000 e-mails for free.
What’s happen?