Somebody know how to set @mydomain.com

[yuta]

i watched [Beginners Guide] to Sending Emails With Sendgrid - Work in Progress!.

and tried this,

@antony

• Head over to sendgrid.com and set up an account.
• Go to Settings → API Keys, Create an API Key, and copy it.
• In Bubble, go to Settings → Domain/Email, and paste the key into the Sendgrid API Key field.
• Click the Connect button next to this field to send Bubble off to check it can talk to Sendgrid okay.

but bubble text me error messeage.

Do you know why i got the error?

and iam curious that if i contract a rental server,
then set mydomain emai on a rental server.

will some error happen on my app??