Configuring Sending Domains for Different Email Types and Volumes
Overview
To improve email deliverability and organization, you can assign different verified sending domains to specific categories of emails sent from your CRM. This allows you to separate marketing emails from transactional ones, for example. You can also control the volume of emails sent through each domain and set a default domain for any sends not specifically assigned.
Accessing Domain Configuration
All settings for managing your sending domains are located in a single panel. To find it, navigate to Sub-Account Settings, then go to Email Service and select SMTP Service. From there, choose Dedicated Domain and IP, and you will find the Domain Configuration section.
Assigning Domains to Specific Email Types
Within the Domain Configuration panel, you can assign a specific verified sending domain to each of the following email categories:
- Workflow Emails
- Email Campaigns
- Bulk Action Emails
- Manual One-to-One Emails
If you do not assign a domain to a particular email type, those sends will use the default sending domain you have designated.
Setting Up Frequency Distribution
The Frequency Settings feature is recommended for users who send high volumes of email and have multiple verified sending domains.
How It Works
This setting lets you allocate a percentage of your total scheduled email volume to each of your domains. Instead of sending all emails through one domain, you can distribute the load. For instance, you might send 80% of emails through your primary domain with the best reputation and 20% through a secondary domain.
The percentages you assign to all your domains must add up to 100%.
Benefits
Distributing volume helps protect your primary domain's sender reputation by preventing overuse. It also allows you to adjust sending volume dynamically. If a domain's deliverability performance drops, you can reduce its percentage allocation without halting all your email activity.
Configuring a Default Sending Domain
The default dedicated sending domain acts as a catch-all. It will be used for any email send that is not explicitly assigned to a different domain in the configuration above.
Important: You should always designate a default domain. This ensures that every email you send routes through one of your own verified domains, rather than potentially falling back to a shared sending infrastructure. This is a critical step for maintaining control over your email deliverability.
Frequently Asked Questions
Can I use different domains for different types of emails?
Yes. The Domain Configuration panel allows you to independently assign a specific verified domain to Workflow emails, Email Campaigns, Bulk Action Emails, and Manual One-to-One emails.
Do the frequency percentages need to total 100%?
Yes. The sum of the percentage allocations you set for all your domains in the Frequency Settings must equal 100% for the system to distribute volume correctly.
What if I don't set a default domain?
If no default domain is set, any email that lacks a specific domain assignment may not be sent using your dedicated domain infrastructure. Configuring a default domain is essential to ensure all outbound email uses your verified domains.
I only have one dedicated domain. Do I need to configure this?
If you have only one verified domain, the most important action is to set it as your default sending domain. The frequency distribution feature is primarily beneficial when you are managing multiple domains.
Can I change these settings later?
Yes. You can update domain assignments, frequency splits, and the default domain at any time in the Domain Configuration panel. Changes will apply to new email sends scheduled after the update; emails already queued or in progress will use the domain settings that were active when they were initiated.
How does frequency splitting help deliverability?
It allows you to manage sender reputation strategically. You can direct more volume through domains with established, strong reputations while limiting sends on newer domains as they build trust. This provides a way to adjust your strategy if one domain's performance declines.
Is this the same as setting default email headers?
No. Domain Configuration determines which physical domain is used to send the email. Default headers control the 'From' name and email address that recipients see, particularly as a fallback if certain email authentication checks fail. These are two separate configuration areas.