Are my invitations sent from my email address?
For technical reasons, the From Email address is firstname.lastname@example.org and this something that we cannot change. This helps ensure that your guests receive your invitation without it going into their spam/junk folder. If a guest replies via email instead of through the site, we set the Reply-to email as your account email.
When your guests receive their invitation email, the From Name will be "Host" name. Most email clients display this name so your guests will be able recognize who is sending them an email.