Sender Accounts Overview
Sender accounts are the email addresses used to send your campaigns. ColdSend supports connecting your own email accounts via SMTP/IMAP credentials.
Bring Your Own Credentials (BYOC)
With BYOC, you connect your existing email accounts to ColdSend:
- You maintain full control over your email infrastructure
- ColdSend handles campaign management and automation
- Emails are sent from your own domain
- Replies are tracked via IMAP
Supported Providers
| Provider | inbox_type | Daily Limit |
|---|
| Google Workspace | GOOGLE_WORKSPACE | 2,000 |
| Microsoft 365 | OUTLOOK_365 | 10,000 |
| Custom SMTP | CUSTOM_SMTP | 100,000 |
Daily limits shown are provider maximums. ColdSend recommends lower limits (20-100) to maintain deliverability and avoid triggering spam filters.
Account Status
| Status | Description |
|---|
PENDING | Account is being validated |
ACTIVE | Account is ready to use |
PAUSED | Account is temporarily disabled |
DISABLED | Account cannot be used |
Connection Requirements
Every sender account requires both SMTP and IMAP configuration:
SMTP (Sending)
- Hostname and port
- Username and password
- TLS settings
IMAP (Reply Tracking)
- Hostname and port
- Username and password
- SSL settings
Both configurations are validated before the account is activated.
Security
- All credentials are encrypted at rest using AES-256
- Credentials are never returned in API responses
- Use app-specific passwords instead of main account passwords
API Endpoints
| Method | Endpoint | Description |
|---|
| POST | /sender-accounts | Add a new sender account |
| DELETE | /sender-accounts/{id} | Remove a sender account |
Next Steps
