The answer to your question is no. We limit that quantity because mass mailings can equate to spam, especially if the user did not specify that they wanted to be a part of a "mailing list". I don't even send out mass mailings via the forum. It would also eat up forum bandwidth in a hurry if everyone did this.
Your best bet is to compile a list of people that want to receive your mailings and then send out notices 2-3 at a time. I believe you are allowed to send to or CC 3 people max at one time.
Edit: Let me say this much, it appears that you are very eager and enthusiastic about getting your group of people together and I admire that and can appreciate it on the level that I've worn your shoes before, but word to the wise....don't wear out the communications channels. If a person were to PM me about meets, etc. often and I would probably shy away because it would seem more like nagging than an invite. Once a month or even bi-monthly updates on meets and events is ample IMO.