Have you set the MAIL_URL environment MAIL_URL ?
From meteorite documents:
The server reads from the MAIL_URL environment variable to determine how to send mail. Meteor currently supports sending mail through SMTP; the MAIL_URL environment MAIL_URL should look like smtp://USERNAME: PASSWORD@HOST :PORT /.
For applications deployed when deploying meteors, MAIL_URL uses the default account (provided by Mailgun ), which allows applications to send 200 letters per day; you can override this default by assigning process.env.MAIL_URL before the first call to Email.send.
If MAIL_URL not set (for example, when the application is launched locally), Email.send displays a message to standard output.
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