There are different opinions about what information should be included in the signature business letter . Content signature may be determined by considerations of personal sender , corporate ethics , generally accepted rules , etc. The best option — to include in the signature of the business e-mail message the same data , which are usually contained in a business card. Business letter should be in strict background. Do not use frivolous and exotic fonts, and animated elements . Desirable to dispense with forms, in the extreme case — use a neutral , strict form ; absolutely excluded bright and colorful forms . In addition, no one can guarantee that the mail program used by recipients, correctly displays similar design . If a business letter contains attached files, is considered good manners to briefly mention in the letter of these investments and their contents . When you create an e-mail message is required to fill in the Subject field. First, it is a manifestation of courtesy to the recipient a business letter , and secondly — increases the likelihood that the message will not be screened out as spam or as a carrier of the virus. In addition, if the recipient has to work with large volumes of e-mail , the field value will quickly recognize the theme this letter among other e-mail messages . When filling out the fields Subject need to take into account the recipient’s email address . If this address belongs to a particular person , then in the Subject field enough summary heart of the matter . However, some companies are not accepted to register a mailbox for each employee and all employees use one corporate mailbox . In this case, the Subject field should also indicate the name and initials of the person to whom addressed a business letter . If a business letter sent to foreign partners , according to business etiquette , it must be in the language of the recipient country or in English (since English is the language of international negotiations ) .