When you insert multiple email addresses in any of these header fields, verify you separate them correctly.
These instructions apply to all email clients, on both desktop and mobile devices.
For nine out of 10 email programs, commas are the way to go.
They work fine unless you use Microsoft Outlook.
Some email clients, like Gmail for Android accept either a comma or a semicolon.
Email clients that use commas as delimiters typically use semicolons to separate multiple addresses in their header fields.
InOutlook, multiple addresses are entered with semicolon separators by default.
In Outlook 2007 and earlier, go toTools>Options>Preferences.
SelectE-mail Options>Advanced E-mail Optionsand check the box next toAllow comma as address separator.
PressOKon the open windows to save and return to Outlook.
