We are using SendGrid from Google Cloud Platform.
When I clicked on "Add Teammate" on the SendGrid admin screen, I got the following response:
> You can't add any more Teammates. Upgrade Plan.
Is it possible to add a Teammate in GCP-connected SendGrid?
The following article is in the SendGrid Official Knowledge Center.
https://sendgrid.com/docs/ui/account-and-settings/teammates/
> Free and Essentials customers can create 1 teammate per account.
We have contacted SendGrid support. The response was as follows.
It appears that you would have to raise this issue directly with the folks from Google Support as your account has been made through them, we don't really have access to make such changes to your account.