Name inside " in Google Workspace

Just noticed something strange, when sending emails from Mautic, the name of the recipient is inside " in Google Workspace (I don’t see the same in for example Outlook). And of the " is not there when I send an email from a “normal” email client to Google Workspace.

See the image for details.
mautic error

Does anyone have any idea what this might be?

maybe its in qoutes because there are spaces between?

what email transport do you use?


Not sure I understand, space between what?

Spaces & square brackets in recipient.