Make sure you check with your hosting provider how much email you are allowed to send per day because your account might get blocked.
1. Is your email list opt-in? 2. For effective email marketing, quality is more important than quantity. The quality of email list and mail content are both important factors for your effective email marketing. Quality is first to consider and quantity comes second. And keep in touch with your targeted customers.
You can send 1 million emails a day, but you can't avoid hitting the "thrash" folder instead. The first thing I would like to know is where you got a million e-mails legitimately? Unless you're Coca-Cola or some other Fortune five hundred business, my guess is you either gathered them on the Internet or got some low-cost spam mailing list. In both cases, it is unlawful to utilize it, and you will be held accountable.