I think in this day and age Newsletters/magazine's are old school, I used to have these through the post monthly/quarterly etc., they incur costs which I don't think in this digital age are worth it. But in those days it was the only way to contact members, with information, meets, questions. We get all information we need via PC,tablet,smartphone,laptop etc. Everyone who is on this forum will have at least one of these devices.
I get a quarterly magazine from a organisation I am a member of and it goes straight in the recycle bin without opening it.
Yes a regular online magazine with summary of the past month/quarter info may be useful but again we have it here instantly.