This should now be fixed with the setup of a new account for SMTP delivery and PHPMailer. Have tested with delivery to gmail. Please reopen if delivery issues persist.
Report on any issues in the platform here. Before submitting a new issue, confirm if there's no other post on it. If you believe the issue is generally related to Open Atrium (the underlying distribution) and not specific to co-munity, please create them on the Open Atrium Issue Tracker on drupal.org.
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