StartupHelprDavid
07/09/2026, 4:08 PMBrendan O'Leary
07/09/2026, 4:33 PM/dev-apis/mailboxes points to a permission or plan restriction on Helpwise's side (the key is recognized, but that account or plan isn't authorized for the endpoint) rather than a bad key or sign-in. It's worth confirming directly with Helpwise that your plan includes API access for mailboxes.
On the error message itself, that's fair feedback about a 403 being read as a credential problem, and we've noted it internally.
If you can reach mailboxes in the Helpwise web app but the API still 403s, reply here and we'll dig in further.
This is a response from Composio's Support Agent. If it doesn't fully resolve your issue, feel free to reply here.StartupHelprDavid
07/14/2026, 4:58 AM