Interseller runs a various set amount of checks to ensure that emailing a contact is within the user's safety parameters. A list of the following errors can occur.
| Error | Description | 
|---|---|
| CRM_VALIDATION | |
| MISSING_VARIABLE | |
| BLACKLISTED | |
| TEAM_BLACKLISTED | |
| INVALID | |
| DUPLICATE_CRM | |
| DUPLICATE_CAMPAIGN | |
| DUPLICATE_TEAM | |
| DUPLICATE_DOMAIN | |
| REPLIED_INDIRECTLY | |
| REPLIED_CAMPAIGN | |
| REPLIED_DOMAIN | |
| REPLIED_TEAM | |
| UNSUBSCRIBED | |
| BOUNCED | |
| GDPR_SUBJECT |