I recently setup an instance of nodebb on an Ubuntu server following the install doc and I am still testing things out. I notice that by default email is not setup. For instance user can not reset password or receive email summary of posts. My guess was that I probably need to install a plugin, and when I search there are several email plugins available. There is the local SMTP plugin and there are a few other ones such as mandrill, postmark, and mailgun. But I have never used any of these services before and dont really know how to choose.
I was wondering if someone with a bit of experience with nodebb mail server setup can help me do this. The community for my nodebb setup is a local makerspace. We have around 30 members now and we dont expect a sudden growth, if we are lucky we may have a few hundred people by next year this time. Right now I am running in a VM that is about the same size as the smallest digital ocean droplet. Based on these information and also your own experience, can anyone recommend one of these plugins?