There must be a lot of questions in your mind as to how to send these letters should it be handwritten or should it be a hard copy of the letter or just a simple e-mail? Generally, it depends on how you want to send it. The best way to do it is by sending a hard copy; it is the best formal way and fairly accepted after an interview. Handwritten letters must be used only if you have good handwriting that can replicate your personality on the letter or if the letter is quite short and brief or if you already know the person in person. E-mail is one of the most informal methods of all but still acceptable. It is good if you have contacted the person through e-mail from the start or if you have to make a quick and urgent reply.
What should the letter say?
The best way to start the letter would be a short and simple line or paragraph that would grab his/her attention and see that you have presented the points neatly and in the right order. If you do not have the best of the lines then you would like to stick to the topic strictly and follow the right method to present a formal letter. See that you finish up your content in a short manner, the longer the tedious the work gets. So maintain a letter with three to four short paragraphs and with the up to the point content.
You can make use of the lines such as thank you for helping me out and spending your time on me. You can even try that you are still interested in the job and would make a good asset to the company. What you had originally discussed and what was left out without even a chance to present. You could even say that you had understood him but replied in a different way to his concern. And end the letter with a thank you again for all the assistance.
Good grief, how many of these do I have to send out?
You must send as many as it takes because the more you send the ore your professionalism would increase and keep in mind that you are working to grow and not to descend. The trouble is temporary but it is for a long term advantage. The first step is to start with a conversation that it was really nice of you to come for the interview working out of schedule. The interview was fascinating full of knowledge and great experience indeed. The energy and tempo brought into the interview were excellent and was truly enjoyed by you. The company looks to hire a person with a high profile but I have the talent to bring myself up to that level and the motivation offered by you was amazing.
I have a special place for this company in my heart and would like to be associated with it. The company sets high standards and I would like to keep up to it. If you would like to try me then I could ensure you that I would prove to be a great asset for the company, I would work well in a group of team and team leadership is one of my best qualities. Your concern for the learning new things and adaptability was totally understandable. But I can prove that there is the spark in me which would prove right for this job. I have the right attitude and approach to the learning of new skills because I like to explore and learn new things.
If a company name called ABC, which is looking for an energetic person, a dedicated, highly motivated person. Then your resume should prepare in such a way to protect yourself suitable for the job. You should add your achievement, work experience, job profile in your resume related to the job applied in ABC Company.
In the older days the thank you letters were considered very formal and not so important but in today's world, these letters carry a great value as it may decide your future.