Who This Is For / When to Use
This update is for:
Businesses using Kyrios Calendars to send appointment emails
Teams managing high volumes of booking confirmations and reminders
Users who want to isolate calendar email reputation from marketing or bulk email traffic
Use this feature if calendar emails are critical to your operations and must reliably reach inboxes.
What’s New
Kyrios now supports dedicated sending domains for Calendar emails.
Calendar-related emails no longer have to share a sending domain with other email types. You can assign one or more domains exclusively to calendar communications and control how sending traffic is distributed.
What Emails Use the Calendar Domain
When a domain is assigned to the Calendar category, it is used for:
Appointment confirmations
Calendar reminders
Reschedule notifications
Cancellation notices
Other calendar-generated transactional emails
This applies only to calendar-related email traffic.
Key Benefits
Better Deliverability
Calendar emails are sent from a dedicated domain, improving inbox placement.Reputation Protection
Calendar traffic is isolated from marketing, campaign, or bulk email reputation.Load Distribution
Distribute sending volume across up to 5 domains per category.Flexible Control
Use percentage-based distribution to control how traffic is routed.
How It Works
Dedicated Calendar domains are configured inside Domain Configuration.
Each email category in Kyrios can have its own domain assignment and traffic split. Calendar emails now appear as a separate category with independent settings.
How to Set Up Calendar Dedicated Sending Domains
Go to Settings
Open Email Services
Select SMTP Service
Click Domain Configuration
Locate the Calendar category
Add one or more verified domains
Set percentage distribution for each domain
Save your changes
Calendar emails will immediately begin using the assigned domain(s).
Requirements and Availability
The domains must already be created and verified in the account
This feature is available to LC Email users only
Maximum of 5 domains per email category
Common Issues and Fixes
Calendar emails are still sending from another domain
Confirm the domain is assigned specifically to the Calendar category
Verify percentage distribution totals 100%
Domain does not appear as selectable
Ensure the domain is fully verified and active
Confirm you are using LC Email
FAQ
Can I use the same domain for Calendar and Bulk Email?
Yes, but it is not recommended. Using a dedicated Calendar domain provides better deliverability and reputation isolation.
How many domains can I assign to Calendar emails?
You can assign up to 5 domains to the Calendar category and distribute traffic using percentages.
Does this affect SMS or WhatsApp reminders?
No. This feature applies only to email generated by Calendar events.
Do I need to update my workflows?
No. Existing calendar workflows automatically use the assigned Calendar domain once configured.