It’s important to configure your email domain correctly so your outreach emails are delivered reliably and not flagged.
Below is a step-by-step guide to help you set up an email domain for successful outreach campaigns. For provider-specific instructions, use your provider’s help articles.
How to Choose the Right Domain
Choose a domain that is similar to your main business domain, but different enough to protect your core domain reputation.
Examples:
If your main domain is "ourservice.com", you could use "tryourservice.com".
If your main domain is "ourservice.com", you could use "ourservice.net".
You should also point the new domain to your website using a redirect in your domain provider’s settings. Here's how to do this in GoDaddy.
💡 Tip: Keeping the domain brand-aligned helps prospects recognize you, which can improve replies and reduce spam complaints.
How to Configure DNS Records
To ensure your emails are authenticated and correctly routed, configure the DNS records below in your domain provider’s DNS settings.
MX Records
MX records tell the Internet which mail servers should receive email for your domain.
Purpose: Direct incoming emails to your domain’s mail servers.
How to set up: Add the MX records provided by your email provider, and ensure the priority values match their recommendations.
SPF
SPF stands for Sender Policy Framework. It lists which servers are authorized to send email on your domain's behalf.
Purpose: Helps prevent spoofing by allowing recipient servers to verify that the sender is authorized.
How to set up: Add a TXT record with your SPF rule, such as "
v=spf1 include:mailservice.com ~all".
🚨 Important: Your SPF record must include the sending service you use, or your emails can fail authentication.
DKIM
DKIM stands for DomainKeys Identified Mail. It adds a cryptographic signature to your emails so recipients can verify the email has not been altered.
Purpose: Proves message integrity and improves trust with inbox providers.
How to set up: Generate a DKIM key in your email provider, then add the TXT record they give you using the selector name they provide.
DMARC
DMARC stands for Domain-based Message Authentication, Reporting & Conformance. It builds on SPF and DKIM by instructing inbox providers how to handle authentication failures.
Purpose: Protects your domain from phishing and spoofing, and gives you reports about suspicious sending.
How to set up: Add a TXT record such as "
v=DMARC1; p=none; rua=mailto:[email protected]".
💡 Tip: Start with "p=none" to monitor reporting first, then move to stricter policies like quarantine or reject when you are confident everything is set correctly.
How to Verify Your Configuration
Once your DNS records are added, verify that everything is working.
Use tools like MXToolbox or your email provider’s diagnostic tools.
Confirm your MX, SPF, DKIM, and DMARC records are detected correctly.
Monitor early sending performance to spot issues quickly.
🎓 Note: DNS changes can take time to propagate. If a record does not show immediately, check again later.
How to Warm Up Your Domain
Warming up means starting with a low sending volume and increasing gradually.
Send a small number of emails per day at first.
Increase volume slowly over time as your domain builds a reputation.
🚨 Important: Sending too many emails too quickly from a new domain can hurt deliverability and lead to account restrictions.
How to Monitor and Adjust
Deliverability is not a one-time setup. You should continue monitoring performance and adjust as needed.
Review bounce rates and spam complaints regularly.
Keep SPF, DKIM, and DMARC updated if you change providers or sending tools.
Adjust sending volume if you see a sudden drop in replies or an increase in bounces.
🤝 If you do not have IT support, Interceptly offers email setup and warm-up as an additional service. Ask for the Support team in the live chat.
Best Practices
Use a dedicated outreach domain that is brand-aligned and easy to recognize.
Set up "SPF", "DKIM", and "DMARC" before sending any outreach emails.
Keep your "SPF" record under DNS lookup limits by avoiding too many include statements.
Warm up new inboxes slowly and increase volume in small steps to build a reputation.
Monitor bounce rates and spam complaints weekly, then reduce volume if you see a spike.
Use verified-only sending if your bounce rate is higher than expected.
💡 Tip: If deliverability drops suddenly, pause sending and review your targeting and messaging before changing DNS records.
FAQ
Q: Do I need a separate domain for outreach?
A: Using a separate domain is recommended because it protects your main domain’s reputation if outreach performance drops.
Q: Which DNS records matter most for deliverability?
A: SPF, DKIM, and DMARC are the key authentication records that help inbox providers trust your emails.
Q: How long do DNS changes take?
A: DNS updates can take minutes to hours, depending on your provider, so it is normal for records to take time to appear.
Q: Can I skip warming up if my list is small?
A: It is still recommended to warm up because new domains and inboxes need time to build trust with email providers.
🚀 Success! Your email domain is now set up correctly for outreach, and you are ready to improve deliverability.