An Internet Protocol (IP) address is a unique numerical address that defines a location. At SendGrid, you can purchase IP addresses dedicated to your account. Since you are the only one sending email over this IP, the sender reputation associated with this IP is determined purely by your sending practices.
If you are sending any significant amount of email, we typically suggest sending your marketing and transactional emails to from separate IP addresses. In addition, it is strongly recommended to associate your sending domain with your new outbound IP address (provided to you by SendGrid). This is available at no extra cost and can be accomplished by completing an rDNS setup for your dedicated IP (here's a video tutorial and documentation help).
We also suggest having at least 2 promotional IP addresses when your volume reaches 200-300K/month.
Depending on the plan you have chosen, you either have a dedicated sending IP address or you are using a shared sending IP address.
Please see our document on suggested IP allocation based on volume.
You can purchase an additional dedicated IP Address from the IP Addresses Settings page or from your Plan & Billing Details page.
To add an additional dedicated IP Address:
Under "Additional Options" you will find the following options:
After purchasing your IP, we strongly encourage you to set up reverse DNS. For more information about setting up reverse DNS, see How to set up reverse DNS.
Purchasing and adding dedicated IPs can only be performed by the Parent account, or Teammates with either Billing or Admin permissions.
Additional IPs cost an extra $30 per additional IP per month. You may only add up to 3 new IP addresses to your account per month.
SendGrid does not offer dedicated IP address reputation monitoring as a service. We do not manage the reputation of your dedicated IP address since only your mail is being sent via your dedicated IP. This means that you have ultimate control over the content that is being sent out and therefore are responsible for monitoring and maintaining its reputation and listing status. However, there are many services that can help you maintain your IP’s reputation.
The following are some third party tools available to assist you in maintaining your reputation:
In addition, SendGrid does offer Delivery Consultation services to Pro and Premier accounts that can help with deliverability and on-boarding. Services include how to maintain/improve domain and IP reputation, reviewing message content, dedicated IP configuration, and creating a custom IP warmup plan just to name a few.
For more information on warming up an IP Address, see Warming up a dedicated IP.
Subusers cannot set up and add reverse DNS to their own dedicated IPs, but you can set it up for them and assign it to them. You can add a dedicated IP to a subuser when you create the subuser, or in the Subuser management page.
To assign a Dedicated IP to a subuser after the subuser is already created: