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Azure + ColdSend
Connect your own Microsoft Azure account to ColdSend. Create pre-warmed inboxes on Azure Communication Services with full infrastructure ownership.
InfrastructureBYOKUpdated Aug 8, 2026
What you get with Azure
Full infrastructure ownershipThe Azure tenant, IPs, and inboxes are yours. ColdSend automates setup on top of your account without taking control of it.
Pre-wmanaged IP poolSend from Azure Communication Services' enterprise IP pool. Microsoft monitors reputation and auto-swaps blacklisted IPs.
One-click inbox creationAdd a domain and create up to 100 inboxes per domain automatically. SPF, DKIM, and DMARC records are handled for you.
Predictable Azure costAzure bills you directly at roughly $2/month per account. No per-inbox fees or hidden infrastructure markup from ColdSend.
Setup in 4 steps
1
Create an Azure accountSign up at portal.azure.com and start with the Pay-as-you-go subscription. You only need one active subscription to get started.
2
Register a service principalCreate an app registration in Microsoft Entra ID, generate a Client Secret, and assign the Contributor role to your subscription.
3
Enter credentials in ColdSendPaste your Tenant ID, Client ID, Client Secret, and Subscription ID into ColdSend's Infrastructure tab and click Verify.
4
Add a domain and create inboxesRegister your domain in ColdSend, add the DNS records shown, then create inboxes. Campaigns can start sending once DNS propagates.
