I'd advise to review the comments and to trust your gut on this call - we weren't in the room and can't pick up on the vibe of the interview. My family runs a HR firm specializing in recruitment and selection (I'm not an HR professional myself; I just help them out with high-level strategy and planning) and they say the most important thing is a follow-up - an e-mail is good, but a phone call would be superior (truthfully, I've always just done an e-mail myself but will call in the future). You'd be surprised how many people don't thank the recruiter/interviewer for their time and it makes a big impression. Interviewers expect candidates to be nervous (sometimes super nervous/in tears/hyperventilating) and they expect awkward answers and otherwise awkward moments. Interviews can be downright frightening for some. Stuttering is very common during interviews even in people who wouldn't normally say they stutter. It depends on my fluency on the day, but I typically tell the interviewer I stutter early on, but not always. One strategy in your case would be something like this generic e-mail/phone call: *"Dear XXXX, thank you kindly for meeting with me on Thursday to discuss position XXXX. Our chats about the company XXX reinforced my prior research that it's a great organization that is passionate about their goal to XXXX. I'm excited about this opportunity and would like to help by using my experiences and skills in XXXX. \[Optional - I wanted to address that I stuttered minimally during the interview. I was a little nervous (I was interviewing at XXXX after all!) and I do stutter from time-to-time, however, it doesn't affect my performance. In fact because of my stutter, I've spent a great deal of time and energy focusing on improving all forms of my communication and can always find a way to effectively get my point across\]. I hope to hear from you soon and thanks again for your time, XXXX"* Best of luck!