MLA Citation Style 9th Edition: Personal Communications (including emails and interviews)

Last Name, First Name of person interviewed. Interview. Conducted by First Name Last Name of interviewer, Day Month Year of interview.

Example:

Lang, Jenny. Interview. Conducted by Andrew Morse, 27 Dec. 2020.

(Last Name of person interviewed)

Example: (Lang)

Last Name, First Name of e-mail sender. E-mail to Recipient Name. Day Month Year email was sent.

Examples:

Kinsey, Sharon. E-mail to Arts Committee. 17 Feb. 2021.

Loch, Mary. E-mail to Eric Andersen. 21 Sept. 2020.

McCain, George. E-mail to the author. 28 June 2021.

(Last Name of email sender)

Examples: 

(Kinsey)

(Loch)

(McCain)