Do I need to send a certified letter or is a regular letter okay to send? I want to make sure they open it asap because I'm signing immediately with another agency.

If you don't have a written contract, you can do it any way you like: telephone call, email, regular mail...etc. If you DO have a written contract, the contract will state the required way to give notice which, usually I have found, requires certified mail.

My first two agencies were verbal and I called and spoke with them and told them I was moving on. They seemed to appreciate the call and we parted ways without incident. My third was written and required certified mail.

However, I always try to give them a courtesy call beforehand. I tried for several days to get my third agent on the phone. After no return calls, he sent me an email telling me, sorry but he had been very busy and if it wasn't an emergency, he could set up 5 minutes with me in about two weeks. Well, that just made it easy for me to do the email drop with the follow-up certified mailing.

I will say that if your contract is a verbal one, sending a certified letter is the safest way to make sure there will be no future problems. It's a pain, but it is PROOF.

Best of luck.

Certified. That way you have proof the letter was received. If time is really an issue, you should consider calling them as well.

Thank you Dream and Shay! Great advice.

People still send certified letters? Man, that's news to me. I would definitely call first but you can follow up with an email that's copied to yourself if you don't want to bother with a visit to the Post Office.

How would you break up with a spouse? Add some (or a lot of) professional conduct, and there's your answer.