Twilio SendGrid's Alerts feature allows you to receive notifications regarding your usage or program statistics from SendGrid at an email address you specify.
Usage alerts allow you to set a threshold, when you've used 90% of your email credits, for example, at which point an alert will be sent to your email.
Statistics notifications, including email statistics, bounces, spam reports, and category statistics, can be delivered to your email address at one of three frequencies: Daily, Weekly, or Monthly.
See the Statistics Overview for more information about the various statistics SendGrid provides about your email.