Document thread-safety gurantees of Mailer about simple-java-mail HOT 7 CLOSED

Hi @zimmi. Unless you mail to a huge number of people a lot of times, it's not going to much of a difference.

Still, you have a valid point as quite some configuration is going on in JavaMail: when a Mailer is instantiated, a Session is produced as well and that potentially does a lot of configuring depending on JavaMail specific config files in your META-INF folder.

It's perfectly fine to reuse a Mailer instance multiple times as it is not modifying its state after it is configured. I'll add a line somewhere and example.

Thanks!

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I updated the documentation with an extra line in basic usage and an extra example demonstrating it. Amazon Cloudfront will take a few minutes to reflect the update though.

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Awesome,thanks! You fixed it before I could even say thanks for the clarification. :)

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I understand "A Mailer instance is reusable" but is it thread safe ? Because stating it is reusable doesn't mean it is thread safe.

Should I wrap the call to mailer.sendMail() with locking or is the mailer instance thread safe ? Thanks.

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@noguespi, It is thread safe. There is no mutable state once a Mailer has been built and internally Mailer uses Java 8's concurrent facilities to maintain thread safety for running mail sessions.

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Thank you, btw your api is very nice and fluent, very good job.

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Thanks!

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