Why does iphone always receive imessage from email?

The imessage you receive is probably an advertisement, and the sending address of imessage can be a phone number or an email address.

At present, Apple has no independent function of blocking imessage, and users can only blacklist a mailbox manually. If you don't want to receive another imessage message from your mailbox, the following steps are specific:

1: Open the information content interface that needs to be shielded.

2. Click "Details" in the upper right corner of the screen.

3: Click the circled letter "I" on the right side of the email address.

4: Select Block this incoming call number at the bottom of the screen.

When finished, you will not receive imessage from this email address.