Hi ehong,
Theoretically, yes, you would be able to send emails daily using our plugin like this. However, when sending that many, I would say that there is a very high chance that you’ll have a lot of trouble.
First off, sending one automatic email to one person via the WordPress auto-mailer can result in spam filtering. Sending to 130,000 will almost guarantee it. You would almost certainly need to use a plugin like WP Mail SMTP to route your emails via a real email address. Nevertheless, you’re still likely to get flagged somewhere along the way, and that would have nothing to do with our plugin and would be something that we would not at all be able to help with.
Furthermore, it’s incredibly likely that, in sending to that many recipients, your site (WP admin) would time out before completing the operation. You’ll either need to break it up into a lot of groups and send separate emails or set your PHP execution timeout to something very long.
