Checks if mails were sent.
For this we use a Testmailer, that is configured via DSN test://test
inside .env.test
.
Check if email was sent.
No mails sent overall.
Check if this special mail was not sent.
Check contents of the mail.
Check contents not in the mail.
Check additional cc recipients.
Check mail sender.
Check if attachment is present.
Check if attachment sames the fixture (file relative to project root).