There are several reasons you might not see links enabled in your email messages (when sending or receiving email messages).
To troubleshoot links not working in an email message, use the following steps.
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Check to see if the email message you're composing or viewing is in plain text.
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Check to see if an InfoBar at the top of the message informs you that links are disabled. If so, click the button in the InfoBar to enable external content.
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Check your Junk Email options.
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In the Delete group, select Junk > Junk Email options.
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On the Options tab, clear the Disable links and other functionality in phishing messages (recommended) checkbox.
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