Review Checklist

Before you hit "send"

Do not type the recipient’s email address until you are ready to hit the send button. This will prevent you from accidentally sending the email before you have the chance to proofread the entire email.
Check that you included a subject line, greeting, closing line(s), sign off, and signature in your communication.
Are there any squiggly blue or red lines under words in the body of the email? If so, check why.
Check that you spelled the recipient and company name correctly throughout your correspondence.
Check that you followed proper capitalization and punctuation rules throughout the email.
Check that the attachments you intend to send are attached. Note: To improve the ability to read any documents you include in your communication, use pdf formatted files (unless the recipient requests otherwise).
Check that the links you intend to send actually work.
Check that the email address you are sending from is appropriate for business correspondence. If not, create a professional email address. For example, someformofyourname@thedomain.
Review your social media profiles for appropriateness. Potential employers will often choose to scrutinize a job candidate's online presence.

It is best to reply in the same email thread. This makes it easy for each party to refer back to previous related emails and content.