Sending Domain

A sending domain is the domain that Internet Service Providers (ISPs) associate with your Bronto deliveries. It's used by ISPs to verify a sender's identity and to track sending reputation.

A sending domain is a back-end configuration that is set up one time in Bronto and is used for email authentication, specifically DomainKeys Identified Mail (DKIM) authentication. The sending domain isn't used to provide the domain your contacts see in the From Address, unless you enable reply tracking. Instead, the From Address is a field that is configured by either setting a default for your account or by typing it in when you send a message. You can use the same domain/subdomain for both of these, but it isn't required. The thing to remember is:
  • A sending domain is used for email authentication and should not be changed once it is configured.
  • The From Address shown to customers can be modified any time you schedule a delivery.

Your sending domain affects your deliverability; your From Address does not.

Note: Bronto allows transactional messages to use their own domain, separate from marketing sends. When a transactional domain is activated, any approved transactional message will be sent from the transactional domain. If there is no active transactional domain, all sends will be from the marketing domain.
You can use one of these for your sending domain:
  • Bronto's shared sending subdomains.
  • Your company's domain, for example,
  • A subdomain of your company's domain used specifically for Bronto deliveries, for example,

Once you've configured Bronto to use one of these, every delivery will be associated with this (sub)domain. The Bronto subdomain is a shared domain; it is used by many Bronto customers. Your corporate (sub)domain is a private domain; only the messages you send are associated with this sending domain.

The reputation of your sending domain greatly impacts your Gmail deliverability; it. determines whether your messages make it to your contacts' inboxes. So it's important to weigh the advantages and disadvantages of each option before configuring your sending domain.

For more information about sending reputation see Check Your Gmail Sending Reputation.

Bronto Shared Sending Subdomain

By default, your account will use the Bronto sending subdomain. Our reputation is shared by all customers who use our domain. Their decisions affect our sending reputation, which could affect your deliverability. While we strive to maintain a good reputation, you'll need to weigh whether you want to give up the ability to control your own reputation.

There are a couple of other disadvantages to using Bronto's sending domain:
  • Some ISPs use DomainKeys Identified Mail (DKIM) for sender authentication. When your From Name uses a domain that doesn't match your sending domain, some ISPs, like Gmail, will register a DKIM authentication issue and display a warning at the top of contacts' email. This may make contacts distrust the message content or mark it as spam.
  • Some links in your messages (links to webforms, for example) will include the sending domain. A contact can see this when hovering over the links. If contacts notice that the URL for a link does not match the From domain, they might not trust the message is from your company.

Corporate Domain

You can use your corporate domain to send with Bronto. This will allow you to control your own sending reputation and promotes clear an consistent branding.

However, using a corporate subdomain will also accomplish these things and is generally a better strategy. Your corporate domain is already used to send business messages. When you also use your corporate domain to send marketing messages, this will have an impact on the sending reputation of your corporate domain. If issues with your marketing messages lower your corporate domain reputation, your ability to send business emails could be impacted. Using a corporate subdomain dedicated to marketing messages will prevent this.

Corporate Subdomain

Generally, we recommend using a corporate subdomain for your sending domain. Sometimes this is also referred to as a child domain. Using a corporate subdomain:
  • Lets you control your own reputation, You won't share your reputation with other Bronto customers like you do when you use Bronto's shared sending subdomain.
  • Separates your business sending from your marketing sending. When you use your corporate domain, issues with your marketing messages can affect the deliverability of all messages sent from your corporate domain. Using a corporate subdomain dedicated to sending marketing messages will keep these reputations separate.
  • Allows you to promote clear and consistent branding.
  • Eliminates domain mismatch issues that can be caused by DKIM authentication.

If you already send from a subdomain with a good reputation, you can leverage your existing reputation and your future reputation will only be impacted by decisions you make. If you aren't currently using a sending subdomain, or have one with a bad reputation, you can set up a new subdomain and use Bronto's warm up strategy to help establish or raise your domain's reputation.

If you've decided to use the Bronto sending domain, do nothing. If you've decided to use a private domain, click here for instructions on how to Set Up A Private Sending Domain