Here's the case:
1. My website is posted with around 400 posts, and upcoming new posts might be 1-5 per month
2. We need to send 1 post to all subscribers every Wed & Fri from the total of 400 posts, order by date, until all post are finished sent.
3. All sent post will have a flag that tell admin & system the post has been sent to subscribers.
4. Admin have the option to manually push additional post (normally for new posts) while the weekly 2 newsletter routine is on going
5. Every newsletter sent to subscriber will also will also be posted in social media (FB, twitter)
6. Estimate subscriber would be around 50k
7. Admin can choose to send email for unverified email user
8. Statistics for user subscriptions (daily how many users signup, and signup from which form)
9. Admin able to set up few different layout of newsletter form to put in widget or page
Is there any plugin that best suit this case? Or any plugin that can be modify to fit this?