MantisBT does not send any email triggered by svn commits.
Did you install the Source Plugin?

Hello atrol
Thanks for your feedback
Yes, i installed the Source plugin

Postgre,

This is not a bug or feature request for MantisBT but a plugin.
I am therefore resolving this issue as "no change required".

This is the right place to enter bugs or feature requests for this plugin
https://github.com/mantisbt-plugins/source-integration/issues