Make Text Strikethrough on a Mac
When you send a new email or forward or reply to an email you received, you can add a text strikethrough in macOS Mail by selecting the text and then clicking the strikethrough formatting button. Adding a strikethrough to email text doesn’t delete it but indicates to the recipient(s) that you changed your mind about that content or that the information is no longer valid. The strikethrough button appears on the Mail formatting bar located above the main part of new emails and email replies. You can strike out words, letters, or entire paragraphs using the strikethrough button from the format bar. That’s all it takes. You click the same S button to undo the strikethrough, or you can select additional words or letters to add a strikethrough to them also in the same message. If you see Make Plain Text in the menu, then the message is already in rich text mode. No further action is necessary.
