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This guide walks you through adding the required DNS records for Lettr using GoDaddy’s DNS management. GoDaddy is a domain registrar and web hosting provider that offers DNS management through its account dashboard at dcc.godaddy.com. You will configure a sending domain (CNAME, DKIM TXT, and DMARC TXT records) and, optionally, an inbound domain (MX records), tracking domain (two CNAME records), and storage domain (CNAME and two TXT records).

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Sending Domain Setup

A sending domain authenticates your outgoing emails with DKIM and DMARC, ensuring they are delivered reliably and not marked as spam. This requires a CNAME record for domain verification, a TXT record for DKIM signing, and a TXT record for DMARC policy. To create a sending domain in Lettr:
  1. Select Domains in the navigation panel
  2. Select Sending Domains
  3. Click Create Sending Domain
  4. Enter your desired sending subdomain (e.g. mailing.company.com)
  5. Click Create Domain
Use a subdomain (e.g. mailing.company.com) instead of the root domain (company.com). A subdomain provides proper reputation segmentation and is required if you also plan to receive emails with Lettr.
Click your new domain in the Sending Domains list. This will display a list of DNS records that need to be configured. Keep this page open — you will need these values soon.

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Configure GoDaddy DNS

Log in to your GoDaddy account, make sure the DNS in the left-hand menu is selected, and select the domain for which you want to manage DNS records from the dropdown. Scroll down for DNS management. Domain listed in GoDaddy DNS zone list
If your domain was purchased through GoDaddy or your nameservers already point to GoDaddy, skip nameserver configuration entirely. Your domain is already using GoDaddy’s nameservers by default — proceed directly to adding the DNS records below.
If you registered your domain elsewhere but want to manage DNS on GoDaddy, you must first transfer the domain to GoDaddy. Select Transfer in the left-hand menu and follow the instructions.GoDaddy domain transfer pageThen, select DNS in the left-hand menu, select your domain, and update the nameservers at your registrar to GoDaddy’s nameservers shown in the domain configuration.GoDaddy nameserver configuration
Until the nameservers are updated, any records you add in GoDaddy will not resolve.

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Add CNAME Record

The CNAME record verifies domain ownership with Lettr’s email infrastructure. Copy the CNAME values from Lettr to GoDaddy:
  1. Click Add New Record on the DNS Management page.
  2. Select CNAME from the Type dropdown.
  3. Copy the Hostname from Lettr and paste it into the Name field in GoDaddy.
  4. Copy the Value from Lettr and paste it into the Value field in GoDaddy.
  5. Leave TTL set to the default (typically 1 Hour).
  6. Click Save.
Omit your domain suffix from the Hostname when pasting into GoDaddy. For example, instead of mailing.lettr-demo.com, paste only mailing. GoDaddy automatically appends your domain to the record name.
Adding CNAME record in GoDaddy DNS Management

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Add TXT Record (DKIM)

The DKIM record adds a cryptographic signature to your outgoing emails, allowing recipients to verify they were sent by an authorized sender. Copy the TXT values from Lettr to GoDaddy:
  1. Click Add New Record on the DNS Management page.
  2. Select TXT from the Type dropdown.
  3. Copy the Hostname from Lettr and paste it into the Name field in GoDaddy.
  4. Copy the Value from Lettr and paste it into the Value field in GoDaddy.
  5. Leave TTL set to the default.
  6. Click Save.
Omit your domain suffix from the Hostname when pasting into GoDaddy. For example, instead of scph0126._domainkey.mailing.lettr-demo.com, paste only scph0126._domainkey.mailing.
Adding DKIM TXT record in GoDaddy DNS Management

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Add TXT Record (DMARC)

The DMARC record tells receiving mail servers how to handle emails that fail authentication checks, protecting your domain from spoofing. Copy the TXT values from Lettr to GoDaddy:
  1. Click Add New Record on the DNS Management page.
  2. Select TXT from the Type dropdown.
  3. Copy the Hostname from Lettr and paste it into the Name field in GoDaddy.
  4. Copy the Value from Lettr and paste it into the Value field in GoDaddy.
  5. Leave TTL set to the default.
  6. Click Save.
Omit your domain suffix from the Hostname when pasting into GoDaddy. For example, instead of _dmarc.mailing.lettr-demo.com, paste only _dmarc.mailing.
Adding DMARC TXT record in GoDaddy DNS Management

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Verify Your Sending Domain

After adding all three DNS records, go back to Lettr and click Verify DNS Records. DNS propagation can take up to 24–48 hours, though it typically completes within a few minutes.

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Inbound Domain Setup

An inbound domain allows Lettr to receive emails on your behalf. This requires three MX records that direct incoming mail to Lettr’s mail servers.

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Add Inbound Domain to Lettr

To create an Inbound domain in Lettr:
  1. Select Domains in the navigation panel
  2. Select Inbound Domains
  3. Click Create Inbound Domain
  4. Enter your desired inbound subdomain (e.g. inbound.company.com)
  5. Click Create Domain.
Click on your new domain in the Inbound Domains list. This will display the MX records that need to be configured.

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Add MX Records

MX records tell other mail servers where to deliver emails addressed to your domain. Copy the MX values from Lettr to GoDaddy:
  1. Click Add New Record on the DNS Management page.
  2. Select MX from the Type dropdown.
  3. Copy the Hostname from Lettr and paste it into the Name field in GoDaddy.
  4. Copy the Priority number (e.g. 10) from Lettr and paste it into the Priority field in GoDaddy.
  5. Copy the first Required MX Record value (without the priority number) from Lettr and paste it into the Value field in GoDaddy.
  6. Leave TTL set to the default.
  7. Click Save.
  8. Repeat this process for the second (rx2.sparkpostmail.com) and third (rx3.sparkpostmail.com) MX records.
GoDaddy may have default MX records (e.g. pointing to GoDaddy’s own mail servers). If you are not using GoDaddy email, delete or update these existing MX records before adding the Lettr MX records to avoid mail delivery conflicts.
Omit your domain suffix from the Hostname when pasting into GoDaddy. For example, instead of inbound.lettr-demo.com, paste only inbound.
Adding MX record in GoDaddy DNS Management

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Verify Your Inbound Domain

After adding all three MX records, go back to Lettr and click Verify DNS Records. DNS propagation can take up to 24–48 hours, though it typically completes within a few minutes.

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Tracking Domain Setup

A tracking domain allows Lettr to track email opens and link clicks using your own custom domain instead of the default Lettr tracking domain. This requires two CNAME records: one for the SSL certificate and one for routing tracking traffic to Lettr’s infrastructure.

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Add Tracking Domain to Lettr

To create a Tracking domain in Lettr:
  1. Select Domains in the navigation panel
  2. Select Tracking Domains
  3. Click Create Tracking Domain
  4. Enter your desired tracking subdomain (e.g. tracking.company.com)
  5. Click Create Domain
Click on your new domain in the Tracking Domains list. This will display the CNAME records that need to be configured.

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Add SSL Certificate CNAME Record

The SSL Certificate CNAME record provisions an SSL certificate for your custom tracking domain, enabling secure HTTPS connections for tracked links. Add the record in GoDaddy:
  1. Click Add New Record on the DNS Management page.
  2. Select CNAME from the Type dropdown.
  3. Copy the Hostname from Lettr and paste it into the Name field in GoDaddy.
  4. Copy the Value from Lettr and paste it into the Value field in GoDaddy.
  5. Leave TTL set to the default.
  6. Click Save.
Omit your domain suffix from the Hostname when pasting into GoDaddy. For example, instead of track.lettr-demo.com, paste only track.
Adding SSL Certificate CNAME record in GoDaddy DNS Management

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Add Traffic CNAME Record

The Traffic CNAME record routes click and open tracking requests from your custom domain to Lettr’s tracking servers. Add the record in GoDaddy:
  1. Click Add New Record on the DNS Management page.
  2. Select CNAME from the Type dropdown.
  3. Copy the Hostname from Lettr and paste it into the Name field in GoDaddy.
  4. Copy the Value from Lettr and paste it into the Value field in GoDaddy.
  5. Leave TTL set to the default.
  6. Click Save.
Omit your domain suffix from the Hostname when pasting into GoDaddy. For example, instead of track.lettr-demo.com, paste only track.
Adding Traffic CNAME record in GoDaddy DNS Management

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Verify Your Tracking Domain

After adding both CNAME records, go back to Lettr and click Verify DNS Records.

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Storage Domain Setup

A storage domain lets you serve email assets (images, attachments) from your own custom domain instead of the default Lettr storage URL. This requires two TXT records for certificate validation and ownership verification, and a CNAME record for routing asset requests to Lettr’s storage infrastructure.

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Add Storage Domain to Lettr

To create a Storage domain in Lettr:
  1. Select Domains in the navigation panel
  2. Select Storage Domains
  3. Click Create Storage Domain
  4. Enter your desired storage subdomain (e.g. assets.company.com)
  5. Click Create Domain
Click on your new domain in the Storage Domains list. This will display the TXT and CNAME records that need to be configured.

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Add TXT Record (Certificate Validation)

The Certificate Validation TXT record provisions an SSL certificate for your custom storage domain, enabling secure HTTPS delivery of email assets. Add the record in GoDaddy:
  1. Click Add New Record on the DNS Management page.
  2. Select TXT from the Type dropdown.
  3. Copy the Hostname from Lettr and paste it into the Name field in GoDaddy.
  4. Copy the Value from Lettr and paste it into the Value field in GoDaddy.
  5. Leave TTL set to the default.
  6. Click Save.
Omit your domain suffix from the Hostname when pasting into GoDaddy, just as with the CNAME record above.
Adding Certificate Validation TXT record in GoDaddy DNS Management

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Add TXT Record (Hostname Pre-validation)

The Hostname Pre-validation TXT record verifies ownership of the storage domain before Lettr provisions a custom hostname for it. Add the record in GoDaddy:
  1. Click Add New Record on the DNS Management page.
  2. Select TXT from the Type dropdown.
  3. Copy the Hostname from Lettr and paste it into the Name field in GoDaddy.
  4. Copy the Value from Lettr and paste it into the Value field in GoDaddy.
  5. Leave TTL set to the default.
  6. Click Save.
Omit your domain suffix from the Hostname when pasting into GoDaddy, just as with the CNAME record above.
Adding Hostname Pre-validation TXT record in GoDaddy DNS Management

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Add CNAME Record (Domain Routing)

The Domain Routing CNAME record routes asset requests from your custom domain to Lettr’s storage infrastructure. Add the record in GoDaddy:
  1. Click Add New Record on the DNS Management page.
  2. Select CNAME from the Type dropdown.
  3. Copy the Hostname from Lettr and paste it into the Name field in GoDaddy.
  4. Copy the Value from Lettr and paste it into the Value field in GoDaddy.
  5. Leave TTL set to the default.
  6. Click Save.
Omit your domain suffix from the Hostname when pasting into GoDaddy. For example, instead of assets.lettr-demo.com, paste only assets.
Adding Domain Routing CNAME record in GoDaddy DNS Management

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Verify Your Storage Domain

After adding all three records, go back to Lettr and click Verify DNS Records.

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Troubleshooting

GoDaddy automatically appends your domain to the record name. If you paste the full hostname (e.g. mailing.lettr-demo.com), the resulting record will be mailing.lettr-demo.com.lettr-demo.com, which will fail verification.Always paste only the subdomain portion (e.g. mailing, scph0126._domainkey.mailing, _dmarc.mailing).
GoDaddy often includes default MX records pointing to its own mail servers (e.g. mailstore1.secureserver.net). If these remain alongside the Lettr MX records, mail delivery may be unpredictable. If you are using a subdomain for inbound email (e.g. inbound.company.com), the default MX records on the root domain will not conflict. If you are using the root domain, delete the default GoDaddy MX records before adding the Lettr records.
GoDaddy has a 1024-character limit for individual TXT record values in some configurations. DKIM values can exceed this limit. If GoDaddy truncates the value or shows an error when saving, try the following:
  • Split the value into two quoted strings separated by a space (e.g. "first-half" "second-half"). GoDaddy may concatenate them automatically.
  • If splitting does not work, contact GoDaddy support to increase the TXT record value limit for your domain.
If GoDaddy truncates your DKIM TXT value, DKIM verification will fail. Always confirm the full value was saved by editing the record after creation.
If verification fails after adding records, check the following:
  • Wait at least 30 minutes before your first verification attempt. Most records propagate within 1–2 hours.
  • Confirm the records exist using command-line tools:
# Check CNAME record
dig CNAME mailing.yourdomain.com +short

# Check DKIM record
dig TXT scph0126._domainkey.mailing.yourdomain.com +short

# Check DMARC record
dig TXT _dmarc.mailing.yourdomain.com +short

# Check MX records (inbound)
dig MX inbound.yourdomain.com +short

# Check tracking domain CNAME
dig CNAME track.yourdomain.com +short

# Check storage domain CNAME
dig CNAME assets.yourdomain.com +short
  • Use a web tool like dnschecker.org to verify propagation across multiple DNS servers worldwide.
A common mistake is selecting the wrong type in GoDaddy’s Type dropdown:
RecordCorrect Type
Sending verificationCNAME
DKIMTXT
DMARCTXT
Inbound mailMX
Tracking SSL certificateCNAME
Tracking trafficCNAME
Storage certificate validationTXT
Storage hostname pre-validationTXT
Storage domain routingCNAME
The DKIM TXT value is a long string. After saving the record in GoDaddy, click the pencil icon to edit the record and confirm the full value was stored. If it appears truncated, see the TXT Record Character Limit section above.
If your domain has GoDaddy’s domain forwarding or parking enabled, it may add extra DNS records (such as A records or CNAME records for @) that interfere with your Lettr configuration. Disable domain forwarding and parking in GoDaddy’s domain settings before adding Lettr DNS records.
If your domain is registered with GoDaddy but you have previously changed the nameservers to another provider, your DNS records in GoDaddy will not resolve. You can check this with:
dig NS yourdomain.com +short
The output should include GoDaddy nameservers (e.g. ns51.domaincontrol.com, ns52.domaincontrol.com). If it shows a different provider’s nameservers, either update them back to GoDaddy or add the Lettr DNS records at your current DNS provider instead.
If your DNS records are correctly configured (confirmed with dig or dnschecker.org) and verification still fails after 48 hours, contact Lettr support at support@lettr.com or through the in-app chat. Include your domain name and the output of the dig commands above.

Sending Domains

Learn about sending domain setup, SPF, DKIM, and DMARC.

Inbound Domains

Configure MX records to receive emails with Lettr.

Tracking Domains

Set up a custom tracking domain for click and open tracking.

Storage Domains

Serve email assets from your own custom domain.

Domains Overview

Understand domain types and how they work in Lettr.

Domain Verification Failures

Troubleshoot common DNS configuration and propagation issues.