Here's everything you need to know about job search email etiquette including what to include in your emails, formatting, and how to make sure your email message is read. (thebalance.com)
Feel free to keep it, but make your job search email address PROFESSIONAL (and remember to check it often if you have to create a new one). (careerdigital.com)
Here is more advice on job search email etiquette, and some sample email cover letters to review before sending your own. (thebalance.com)