After each meeting has been met or noticed, it will never hurt to follow the thank you note. He shows that he respects the client's time, and even if the product was inappropriate this time, the client knows that he is a polite, professional college college that he wants to resume.
Email or snail message? You know best; Think of the client's corporate culture. In general, emails are ok, especially if we are thankful for something informal, such as time.
Your voice is just something you can measure. If you have any doubts, the more formal is the better. You do not have to be cold or work, but respectful.
Here are some examples of customizing your own situation.
It was a pleasure to meet you yesterday. Your ideas about new approaches to sales within your region have gained insight and have helped me a lot. Thank you for saving me time and sharing your thoughts.
—————————————–  Dear Dr. Price,
Thank you for seeing me yesterday. I appreciated the chance to discuss our new products with you. Your opinions are always useful and interesting. I hope the latest product meets your needs.
I'm always happy to see you.
—————————————–  Josh,
I'm glad to have the opportunity to meet you today. The research project seems to be very interesting and offers value creation for mobile phone operators. As we have already discussed, our team has done extensive work on the type of data collection required for research.
Please let me know if I can provide more details on how we will work on the project.
Waiting for you to talk to you soon.
Thank you for today. Jack and I appreciated your views on your new business development strategy. I know that you have many demands on the timetable now, so more to welcome the fact that you spend as much time as you did.
We will ensure that you will be back when the plan is finalized in order to provide your approval stamp and final comments.