Hiran Chaudhuri created EMAIL-211:
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Summary: Add connection pooling
Key: EMAIL-211
URL: https://issues.apache.org/jira/browse/EMAIL-211
Project: Commons Email
Issue Type: New Feature
Reporter: Hiran Chaudhuri
Congratulations for an easy to use straightforward client library.
However the application I created spends most of it's time connecting to the
mailserver. How come?
Apparently the examples on
[https://commons.apache.org/proper/commons-email/userguide.html] follow this
pattern:
{code:java}
Email email = new SimpleEmail();
...
email.addTo("[email protected]"); email.send();
{code}
As an effect, in the background it creates a JavaMail Session and Transport,
uses it to send the email and then forgets about it again. In my environment
building a connection requires to get an authentication token, then using that
for secure SMTP. Establishing such a connection takes a few seconds, which
limits the throughput of sending emails.
Please add a feature (or document how to do if already possible) to reuse
connections for sending several mails. Also the solution should be thread safe
so a multithreaded application can send emails in parallel.
I guess this should be easily doable by combining commons-pool and
commons-email. However my attempts failed miserable, making me want to switch
to other mail client libraries altogether.
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