Updated: May 2026
People worry about lock-in. It is a fair concern. Here is exactly what happens to your mailboxes if you cancel ColdSend, and what you should do beforehand.
What You Actually Own
ColdSend uses a BYOA model: Bring Your Own Azure. You create the Azure account. Microsoft bills you directly. ColdSend just automates the setup on top of it.
This means:
- The Azure tenant is yours.
- The domains are yours (you bought them).
- The inboxes live in your Azure account.
ColdSend does not own your infrastructure. We cannot delete your Azure account. We cannot take your domains. We cannot lock your inboxes.
What Stops Working
When you cancel ColdSend, the following stops:
- ColdSend's sequencer. You can no longer log into coldsend.pro to send campaigns.
- Automation. Inbox creation, DNS management, and bulk provisioning stop.
- SMTP Export relay. The relay credentials generated inside ColdSend (smtp.coldsend.pro) are deactivated.
- Support. We no longer answer your questions.
What Keeps Working
The following keeps working because it is in your Azure account, not ours:
- Your Azure tenant. It stays active as long as you pay Microsoft.
- Your inboxes. They remain in Azure Communication Services.
- Your domains. You own them through your registrar.
- Your DNS records. They stay configured wherever you set them up.
The inboxes do not self-destruct when you cancel ColdSend. They are just harder to access without our dashboard.
How to Export Before Canceling
Do this before you cancel. Afterward, you lose access to ColdSend's export tools.
Step 1: Bulk export all inboxes
- Go to Sender Accounts in ColdSend.
- Select all inboxes.
- Click Actions → Export.
- Save the CSV file securely.
The CSV contains:
- Email address
- Decrypted mailbox password
- SMTP server (mail.coldsend.pro)
- SMTP port (587, STARTTLS)
- IMAP server (mail.coldsend.pro)
- IMAP port (993, SSL/TLS)
Step 2: Save SMTP Export credentials
If you enabled SMTP Export on individual inboxes, save those credentials too. Note: these are relay passwords, different from the mailbox passwords in the bulk export.
Step 3: Note your DNS settings
If you plan to manage the domains yourself later, record your current SPF, DKIM, and DMARC records. These are configured at your registrar or DNS provider, not in ColdSend.
How to Keep Using Your Inboxes
After canceling, you have a few options to keep sending from your Azure inboxes.
Option 1: Use the credentials in another sequencer
Import the bulk export CSV into Smartlead, Instantly, or any SMTP-compatible tool. Use the mailbox password with IMAP host mail.coldsend.pro for reply tracking.
Option 2: Use an email client
Configure Thunderbird, Apple Mail, or Outlook with the SMTP/IMAP settings from your CSV. This is manual but works fine for small volumes.
Option 3: Manage directly in Azure
If you are technical, you can access your Azure Communication Services resource directly in the Azure portal and manage inboxes there. This requires some Azure knowledge but gives you full control.
Option 4: Let them sit
If you are done with the inboxes entirely, just stop paying Azure. Microsoft will eventually decommission the resources. There is no penalty for inactive inboxes.
If You Used Starter (Imported Inboxes)
If you were on the Starter plan and imported your own Gmail, Outlook, or SMTP inboxes, nothing changes when you cancel ColdSend. Those inboxes were always yours. ColdSend was just the sequencer.
You can reconnect them to any other tool immediately.
Bottom Line
Canceling ColdSend does not delete your infrastructure. It just removes our automation layer.
Your Azure account, your domains, and your inboxes stay yours. Export your credentials before canceling. Then use them in any tool you want, manage them manually, or let them sit.
This is the point of BYOA. You are not renting our infrastructure. You are automating yours.
Questions about migration or account ownership? Contact us before you cancel and we will walk you through the export process.
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