- Can I point *.mydomain.com to my Heroku app?
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Yes, using the Wildcard Domains add-on. Note that this requires the free Custom Domains add-on to also be installed.
- Does my app have a static IP?
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No. With multiple dynos, your app is distributed across several nodes in our grid. Access and routing to individual dynos is always controlled by our routing mesh, and goes through our public IPs. While you can never access a dyno directly by IP, it is possible to originate outgoing requests directly from a dyno. However, do not count on the dyno’s IP being static. We actively monitor our grid, and frequently move dynos around to ensure optimal reliability and performance.
- Do you offer an outgoing email service?
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Yes, through the Sendgrid add-on. The free version will allow you to send 200 emails per day from your app, and the paid version allows 30,000 emails per month for $20. If you need a higher volume Sendgrid plan, please contact biz@heroku.com. You can also use GMail SMTP, following these instructions.
- What versions of Rails do you support?
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We support Rails 1.2.x, 2.x, 3.0.X and 3.1.