This issue can occur if the User has been created but has not previously sent an emarketing campaign. Follow the steps below to resolve the issue:
- Sign in to Act! 365 as the affected User
- Send an emarketing campaign by following the article below:
How do I send an email campaign in Act! 365?
- Once the emarketing campaign has been sent log-on as another User
- Send an emarketing campaign and the missing User will now be listed under Send As