Unable to change sender email

Hello there!

I’ve been using Ghost for while and I’m still struggling to update my sender email.

A while ago, I managed to update this email with a “normal” email provider like google. So now, every email is sent from this email. I want to switch to my new email provider SendGrid.

Do you know how can I change that ? The UI doesn’t contain a email configuration page (except newsletter page but it won’t validate the email as it sends the email to the sender it seems).

I’ve updated my Ghost configuration with everything needed for SendGrid (it’s working as I use it on other applications).:

"mail": {
    "from": "'XXX' <XX@domain.com>",
    "transport": "smtp",
    "options": {
      "service": "SendGrid",
      "transport": "smtp",
      "host": "smtp.sendgrid.net",
      "port": 465,
      "secure": true,
      "auth": {
        "user": "XXX",
        "pass": "XXXX"