How Can I Stop My iPhone from Marking Email Addresses Red When Composing?

Have you noticed that when you type an email in the iPhone’s default Mail app, some of the addresses are red? Depending on your own email address, you might even see that red identifier in the From field, too.

This is occurring because your iPhone’s “Mark Passwords” setting has a value in it, which is causing it to identify anything without the marked domain name to be displayed in red font. Our guide below will show you how to disable this setting.

How to Change the Mark Address Setting in the iPhone Mail App

The steps in this article were performed on an iPhone 7 Plus in iOS 12.2. By completing the steps in this guide you will be removing some domain names from the Mark Addresses field in your Mail settings. Note that you can either elect to delete everything that is shown there, or simply a couple of the listed domains.

Step 1: Open the Settings app.

open the settings app

Step 2: Select the Mail option.

choose the mail option

Step 3: Scroll down to the Composing section and choose the Mark Addresses option.

open the mark addresses menu

Step 4: Delete any listed domains for which you no longer wish to mark the address in red. If you don’t want to mark any addresses, then your screen should look like the image below.

how to stop your iphone from marking email addresses with a red font

Running out of storage space? Read our iPhone storage guide for some tips on ways to increase the available storage on your device by deleting old apps and files.

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