A business email should absolutely contain a professional signature. Email signatures allow you to promote your brand and company. It is an excellent marketing tool, and it adds a professional look to your correspondence.u003cbr/u003eu003cbr/u003eAs more people recognize your logo and associate it with positive interactions, your brand’s reputation will grow. Signatures have also proven to be more effective branding tools than ads, newsletters, and promotional materials.u003cbr/u003eu003cbr/u003eNot including a signature in your email is a missed opportunity to present yourself and your business to customers, partners, and leads.