Azure + ColdSend
Connect your own Microsoft Azure account to ColdSend. Create pre-warmed inboxes on Azure Communication Services with full infrastructure ownership.
How it works
Create an Azure account
Sign up at portal.azure.com and start with the Pay-as-you-go subscription. You only need one active subscription to get started.
Register a service principal
Create an app registration in Microsoft Entra ID, generate a Client Secret, and assign the Contributor role to your subscription.
Enter credentials in ColdSend
Paste your Tenant ID, Client ID, Client Secret, and Subscription ID into ColdSend's Infrastructure tab and click Verify.
Add a domain and create inboxes
Register your domain in ColdSend, add the DNS records shown, then create inboxes. Campaigns can start sending once DNS propagates.
Need detailed setup steps?
The full Azure BYOK Setup Guide walks through creating the service principal, adding API permissions, registering Microsoft.Communication, and entering credentials.
Why connect Azure to ColdSend?
ColdSend's BYOA option lets you own the infrastructure layer while we handle the automation. You get pre-warmed Azure Communication Services IPs, automated inbox creation, and built-in deliverability monitoring — all on an Azure account you control.
It's the best choice if you want full ownership, plan to scale past the included Infra Bundle slots, or need your finance team to pay Azure directly rather than going through ColdSend.
Already have an Azure account?
If you already have an active Azure subscription, you can skip the account creation step and move straight to registering the service principal. Most teams are sending from Azure within 15 minutes.
What you get
The Azure tenant, IPs, and inboxes are yours. ColdSend automates setup on top of your account without taking control of it.
Send from Azure Communication Services' enterprise IP pool. Microsoft monitors reputation and auto-swaps blacklisted IPs.
Add a domain and create up to 100 inboxes per domain automatically. SPF, DKIM, and DMARC records are handled for you.
Azure bills you directly at roughly $2/month per account. No per-inbox fees or hidden infrastructure markup from ColdSend.
Ready to connect?
Start sending from Azure in minutes, or open the setup guide if you need help with credentials or OAuth.
Need help? Book a call with our team.
without the infra.
