Hello! I got this messages when I am using email_to_user function:
email_to_user: User 3 (mani test) email (email@example.com ) is invalid! Not sending, and email_to_user: User 5 (user user1) email (firstname.lastname@example.org ) is invalid! Not sending, but this mails are valid!
Why I can not send emails to this two mails. I only tested it when I sent emails to Gmail and it works, but with this two mails (email@example.com and firstname.lastname@example.org ), I get this error.