Custom from emailaddress doesn't work

[Merle]

For the Single send API I want to use a custom email address. However, Hubspot doesn't allow me to do this. See image for an example. Can you please help me with this?

[roisinkirby]

This post was part of the HubSpot Community Team's migration of developer forums from integrate.hubspot.com to community.hubspot.com

[roisinkirby]

This post was part of the HubSpot Community Team's migration of developer forums from integrate.hubspot.com to community.hubspot.com