In reply to Rob Parsons:
Some of them describe themselves as old and grumpy, but I recognise that my remark was unhelpful.
We currently use the mailing list for members to coordinate after work climbing in the summer and other informal activities with each other so it needs to be fairly straightforward to use and facilitate two way discussion with any member of the club able to pick up the discussion. We already have a suitable facility for formal one way communications from the committee (The Newsletter is distributed via this with everyone BCC'ed, Mailchimp might be of use for this if the newsletter editor has any issues with it).
Various of the older members have complained about having to remember a variety of usernames and passwords so something which requires another login to be used (like a forum on the club website, or Slackchat etc) would likely be a none starter, some of the younger members seem to strongly prefer using the Facebook group as they use Facebook for most personal communication anyway. I think the ideal mechanism would be able to interface the Facebook group with emails.
We do have our own website (www.oread.co.uk), we are looking at updating it at the moment so tieing the two systems together would be a possibility, although I think we are wanting to keep the new website quite simple to enable us to keep maintenance of the website within the club so this may not be feasible (I'll freely admit that my knowledge of website design is pretty weak, thankfully I have nothing to do with running the website!).
Thanks
Post edited at 15:25