Possible Clues:

• E-mail: Abbr.
• Inbox list: Abbr
• Voice mail items (Abbr.)
• Voice mails: Abbr
• Txts, e.g
• Texts, e.g.: Abbr
• Texting units: Abbr
• E-mail, e.g.: Abbr
• Texts: Abbr
• Txts