When you arrange a meeting and get a group of people or individuals to do something which favours you, you should let your benefactors know that you are optimistic about their support and are planning to keep in touch with them for further help.
The best way to tell people about your networking of an event, which was organized effectively is to write a quick email.
Start the email by using opening salutation. Use name with dear, since you are familiar with the person you are writing to.
The first paragraph of the email should focus on appreciation and gratitude for the people who made the event a success. You should not mention details in the opening paragraph. State why this email is being written and how important the event was for the sender and recipient of the email.
In the second paragraph, you can talk about the details of the event. If the event was a success, state how it will benefit you and if there were some lapses, state how they could have been avoided. If you want to give a heads-up to the recipient, you can mention it in the first paragraph.
Conclude the email by intimating what you intend to do in future and your expectations with the recipient.