The email signature is a small text at the end of your email correspondence. If email correspondence is business to you, then you should consider signing your email.
A professionally signed email will help you develop your business relationship and here are some obvious reasons:
- It looks professional.
 - Represents your brand and reflects the tone of your organization.
 - Increases trust because there's a logo or a picture of you.
 - Helps the reader verify identity based on contact information
 - Provides additional information such as links to your website or promotional offers.
 
- Avoid overly long signatures. Remember, this is not a promotional booklet.
 - Carefully choose the contact details you provide, as they will form the basis of the reader's opinion about you.
 - Do not duplicate your email in your signature
 - Avoid spelling and grammatical errors
 - Think about your photo, you should look business-like in it.
 - Choose a simple and concise design
 - Place only actual promo offers
 - Make your signature adaptable to mobile devices
 
Good luck with your business correspondence!