Open the Mail app and open the spam email
Tap the sender’s name or email address
Tap Block this Contact
Go to Settings
Tap Apps
Tap Mail
Tap Blocked Sender Options
Choose Move to Trash or Mark as Blocked, Leave in Inbox
Open the spam email
Tap the Reply button
Tap Block Sender if available
Mark the email as junk
In Mail, swipe left on the message
Tap More
Tap Move Message
Tap Junk
Unsubscribe from legitimate mailing lists
Go to Settings
Tap Mail
Tap Accounts
Open your email account settings
Disable Mail for accounts you do not use
Use the Report Junk option from your email provider if available
Filter unknown senders in Mail
Go to Settings
Tap Apps
Tap Mail
Enable Filter Unknown Senders
Delete suspicious emails without opening links or attachments