When proofreading your email marketing content, be on the lookout for common mistakes such as: - Spelling Errors: Even minor spelling mistakes can detract from your message. - Grammatical Mistakes: Incorrect grammar can make your content difficult to read. - Punctuation Errors: Misplaced commas or periods can change the meaning of your sentences. - Formatting Issues: Ensure that your email is well-formatted and visually appealing. - Broken Links: Double-check that all hyperlinks in your email are working correctly.