Communications Overview
Design emails, manage templates, and engage customers.
Kantos Communications provides a visual email builder, template management, and an email log to help you engage with contacts effectively. Design beautiful emails, personalize with variables, and track delivery.
Professional Emails, Zero Code
Create stunning, responsive emails with our drag-and-drop builder. No HTML knowledge required—just design, personalize, and send.
Sending Emails
Via Automation
The most common way to send emails is through automations:
{
"type": "send_email",
"config": {
"template_id": "tmpl_welcome",
"to": "{{record.email}}",
"subject": "Welcome to {{org.name}}!",
"from_name": "{{sender.name}}",
"reply_to": "{{sender.email}}"
}
}Manual Send
Send emails directly from a record:
Open a Record
Navigate to the record you want to email.
Click "Send Email"
Find the email action in the record menu.
Select Template
Choose a template or compose from scratch.
Review & Send
Preview the personalized email and click send.
Email log
Track every email sent from your Kantos account under Communications → Email log:
| Status | Description |
|---|---|
| Sent | Email successfully sent to mail server |
| Delivered | Email accepted by recipient's mail server |
| Opened | Recipient opened the email (tracking pixel loaded) |
| Clicked | Recipient clicked a link in the email |
| Bounced | Email couldn't be delivered |
| Complained | Recipient marked as spam |
| Unsubscribed | Recipient clicked unsubscribe |
Email Tracking
Open and click tracking is enabled by default. You can disable it per template if needed for privacy-sensitive communications.
Domain Authentication
Improve deliverability by authenticating your sending domain:
Open Domains
Go to Communications → Domains in the sidebar.
Choose Your Domain
Enter the domain you send from (e.g., company.com). Kantos sends through a subdomain such as mail.company.com, so your existing email keeps working.
Add DNS Records
Copy the records into your DNS host: three for sending (required), MX for replies and a DMARC record (both recommended; v=DMARC1; p=none; is a safe start). Kantos detects common DNS hosts and shows their steps.
Create a Sender
DNS changes usually show up within minutes, but can take up to 48 hours. Kantos checks while the domain's page is open, and every 15 minutes in the background during a new domain's first week; after that, open the domain and click Check now. Once sending is verified, create your first sender and send yourself a test email.
Important for Deliverability
Without domain authentication, your emails may land in spam folders. Complete verification before sending to customers.
Send From Any Email Address
No domain to set up? Verify any address you receive mail at instead: Communications → Email Senders → Verify an email address. SendGrid emails it a link; once it is clicked, Kantos can send as that address, and replies to what you send come back into Kantos.
Kantos Checks the Address First
Some domains tell mail providers to reject or spam email sent in their name from other servers (Yahoo, AOL, iCloud and many company domains). Kantos looks this up as you type and says so; for those, set up the domain or connect the mailbox instead. Gmail and Outlook addresses can be added, but connecting the mailbox delivers better.
Click the Link
Open the email SendGrid sends to the address and click the link, then press “I’ve clicked it”.
Forward Your Mail In (Optional)
Each verified address gets a forwarding address. Set your mailbox to forward to it (Gmail: Forwarding and POP/IMAP; Outlook: Mail → Forwarding) and new mail sent to your address arrives in Kantos too. Kantos keeps only mail from people in Kantos and replies to emails you sent from it, so forwarding everything is fine. Gmail asks for a confirmation first: it appears on the Email Senders page with its link. An address you have connected as a mailbox needs no forwarding.
Email Signatures
Every address you send from can have its own signature: each sender, and each Gmail or Outlook mailbox someone connected. Kantos adds it under every email a person writes from that address — from a record, in the inbox, or through an AI agent — and never under templates, campaigns or sequences, which have their own footer.
Open the Signature Editor
Go to Communications → Email senders and click the pen next to an address. Admins set the signatures of senders; a mailbox’s signature is set by the person who connected it, or by an admin.
Paste or Write It
Copy your signature from Gmail, Outlook, a web page or Word and paste it into the box: it keeps its formatting. Or edit the HTML, and insert a photo or logo from your image library.
Check the Preview and Save
The preview shows it exactly as it will be sent. Scripts, style blocks and pasted images that are not on the web are removed.
One email without it
The composer and the inbox reply box show Add signature when the address you send from has one; untick it to leave it off that email. AI agents use email_senders_update or connected_inboxes_update to set a signature, and include_signature: false to leave it off one email.
Setting This Up With an AI Agent
Kantos exposes an MCP (Model Context Protocol) server. Connect an AI agent — Claude or any other MCP client — and it can handle most of the flow above for you.
Connect Your Agent
As an org admin, go to API → MCP Integrations and connect your agent via OAuth.
Agent Registers the Domain
It calls domains_create, which returns the DNS records SendGrid needs.
You Add the DNS Records
This one step stays human — no agent can edit your registrar's DNS for you. Paste in the records it gave you.
Agent Finishes Setup
Once you confirm the records are in, it calls domains_validate to check propagation, then email_senders_create to add a sender and start sending.
What the agent can and can't do
domains_list, domains_create, domains_validate, email_senders_list, email_senders_create, and email_senders_check_verification cover the whole flow except one thing: actually adding DNS records at your registrar. That step has to stay with a human — the agent will tell you exactly what to add and pick up again once that is done.
Best Practices
Design
- Keep subject lines under 50 characters
- Use a clear, single call-to-action
- Include your logo for brand recognition
- Test on multiple email clients
- Always include an unsubscribe link
Deliverability
- Authenticate your sending domain (SPF, DKIM, DMARC)
- Maintain a clean email list
- Don't use spammy words in subject lines
- Keep image-to-text ratio balanced
- Monitor bounce rates and remove invalid emails
Next Steps
- Email Builder — Design emails with the visual builder
- Templates — Create and manage email templates
- Variables — Personalize emails with dynamic data
- Automations — Send emails automatically