Question - is JavaMail the choice for me? Mass email delivery.

Hello. I'm thinking about using JavaMail API, and I would like your feedback if JavaMail is the right choice for me.
I'm working on a J2EE app (running on Glassfish) that will send email out to multiple recipients. The critical parts are
1) It must scale so that it can send up to 10,000 email multiple times a day.
2) The servlet that sends out the email must have a descent performance (can't hang while sending out 10,000 email forcing the user to wait, but for the servlet to send out 10,000 emails....I expect a little delay)
So I'm using postfix for delivery with support for 10,000 recipients. I am thinking of using JavaMail inside a servlet which retrieves the 10,000 email addresses and creates 100 separate emails with 100 email recipients under BCC for each email.
I am sending out the email in bulks of 100 separate email each with 100 recipients under BCC to address performance.
Does my solution sound logical? Anything else I should be aware of?

I'm not speaking from personal experience since I haven't tried to build something
of the scale you're talking about, but...
I wouldn't expect the overhead of the JavaMail API to be a significant issue here.
Of course, you have to use the JavaMail API in a reasonable manner to get good
performance and scalability.
A lot depends on the performance of your server as well.
I would expect the most difficult part to be handling the inevitable failures (network, server, etc.)
that will occur when working at this scale.
100 connections to your mail server several times a day shouldn't be an issue, but your
mail server will be busy sending out all those messages.

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Question - is JavaMail the choice for me? Mass email delivery.

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