Please provide your suggestions about AnsPress email subscriptions – closes in 3 days

[I REQUEST ONLY EXPERTS TO REPLAY THIS QUESTION]

Hello Everyone,

I am working on improving AnsPress email subscriptions. So, I wish to know everyone’s feedback on how to handle subscription system database and queuing.

I wish to notify every user for subscribed taxonomies and users about new question and answers. Of course you gonna need more then PHP SendMail/Gmail SMTP to send lots of mail.

Thanks