Can a welcome email automation series get triggered when a contact either subscribes to the related list through the API or is added manually or imported?

Mailercloud allows you to set email automation workflows for multiple actions taken by the contacts whether they have just joined a particular contact list through API, manually, or through webforms.

You can set a welcome email automation series to automatically trigger as soon as a contact subscribes to a particular list through API or you have added or imported that contact manually. Similarly, you can also set a welcome email automation series to trigger automatically when a contact submits a web form and gets added to a contact list.