🚀 go-pugleaf

> How are these e-mails being sent? Are you performing mx lookups, or
What are mx lookups?

> just fowarding to an SMTP server?
Yes, but first they are digitally signed and/or encrypted. It is SMIME.

> although the network and the
> machine will still have an affect on how many it's worth having.
Yes, I've tested it on different PC configurations and faster PCs send more
mails per minute.

> In the
> second case, everything's being pushed to a single socket anyway, so
> network access (at least) will have to be single-threaded.
I'm using Bouncy Castle libraries. I'm not dealing with network at all.

> There are no hard and fast numbers in concurrency requirements, even
> for a given machine - it depends upon work load as well.
Can I start high fixed number (i.e. 30) of threads on any machine? Will that
(high number of threads) slow down slow machines?

> If you describe a bit more about your architecure (provided this isn't
> spam software :) I'll try and make some more concrete reccomendations.
No, it is not spam software. :) My mail app will send digitally signed
(and/or encrypted) invoices to the customers (companies).

Thank you.