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Domain Setup

Learn how to setup your domain inside ColdSend and common issues you may face
By Mo Rassam
• 3 articles

How to connect your domain to ColdSend

To send email from your own domain (you@yourcompany.com) you must let ColdSend host the DNS records that prove you own it (SPF, DKIM, DMARC). The fastest way is to delegate the domain to ColdSend’s name-servers. After a 2-minute change at your registrar, we handle all authentication records for you and keep them rotated automatically. Step 1 – Add the domain in ColdSend 1. Log in to https://cloud.coldsend.pro 2. In the left menu click Domains → Create new domain (Note: You have to be subscribed to a plan to do this step) 3. Type the root domain you want to send from (e.g. coldsend.pro) and press Add 4. Click the blue “Connect my domain” button that appears A sidebar opens showing the two ColdSend name-servers you must use: Keep this page open — you’ll copy those values in the next step. Step 2 – Change name-servers at your registrar Open your domain provider’s dashboard in a new tab and replace the existing name-servers with the two above. Choose your registrar below, click the link for the exact clicks and screenshots (opens in a new tab): Cloudflare: Change name-servers at Cloudflare Namecheap: Change name-servers at Namecheap GoDaddy: Change name-servers at GoDaddy (video) Google Domains: Switch to custom name-servers Bluehost: Update name-servers at Bluehost ⚠️ Important - Only the name-server fields need to be changed — leave all other DNS records empty; we will re-create the ones you need. - If the domain already has a website, open a support ticket first so we can copy over the A-records before you switch. Step 3 – Wait for verification Return to the ColdSend Domains page. Status will change from “Verifying” → “Active” once our system sees the new name-servers (usually within 5 minutes, occasionally up to 2 hours). If the status is still “Verifying” after 24 hours, email us at hello@coldsend.pro and we’ll check it manually. That’s it, your domain is ready! You can now create mailboxes and start campaigns; SPF, DKIM and DMARC are already configured and will be kept valid automatically.

Last updated on Sep 27, 2025

Can you use ColdSend inboxes outside of ColdSend?

Short answer: No. ColdSend inboxes work only inside ColdSend. Why the restriction? 1. Domain authentication is locked to our infrastructure When you delegate your domain to ColdSend we generate and host the SPF, DKIM and DMARC records on our name-servers. The private DKIM key never leaves our environment, so no external platform can sign mail on your behalf. 2. Inboxes are logically “registered” to our IPs Each mailbox is tied to a dedicated ColdSend IP that is pre-warmed and monitored for reputation. Exporting the SMTP credentials would let you send from a different IP range, instantly breaking the warm-up chain and putting both your domain and our IP pool at risk. 3. We don’t expose SMTP/IMAP credentials ColdSend uses a closed API; we do not provide host-names, ports, usernames or passwords that third-party tools require. Without those details, Instantly, Smartlead, Reply.io, etc. cannot add the inbox in the first place. No other email platform allows you to do the same, and for the same reason: none of them (Instantly, Smartlead, Reply.io, etc.) expose SMTP credentials — so the mailboxes stay locked inside the platform where they were created Bottom line If you need to split traffic across multiple platforms, register a second sub-domain (e.g. outreach.yourcompany.com) and delegate that sub-domain to the other service. ColdSend will continue to manage the original domain; the other platform can manage its own DNS and reputation independently.

Last updated on Sep 27, 2025