Business is global, business is fast-paced and business is high-tech. There is an energy and urgency underlying our activities and communications.
High-tech tools give instant access to clients and associates. Finding the right way to communicate is the key to success in business as much as it is in our private lives. Learning the proper greetings, introductions or openers will go a long way. When you say "Hello!" to people in their native language, you show your willingness to make an effort in their tongue, and you also make a great first impression.
When you make even a stumbling attempt at small talk, you show that you're willing to put yourself out there and make an effort. You don't need to be perfect, you just need to show you'll take a lead and try your best to make a great first impression. In most cases you will even discover that the attempt to make small talk in another language will trigger your speaking partner to help you along with words, which might not only carry the conversation, but provide some humor and break barriers as well.
When it comes to business e-mail, use complete sentences and proper grammar. This communicates that you're a professional. Spell-check your messages or have a more expert speaker of the language look them over before you hit "Send." Spelling errors in many cultures are an indicator of carelessness or poor education.
Finally, take time to familiarize yourself with the business culture or customs of the people with whom you're dealing. Even if your speech is letter-perfect, you can still spoil a deal by talking too much or being too assertive (two common complaints about Americans).