Hi Stepan, I just signed up and think I might be your target audience.
I could very easily see my friends and I using this to stay in touch. There are nine of us who've been keeping a (private) blog together for 12 years now.
Two thoughts:
1) Custom Time Intervals
What I like about your product is that it solves one of the biggest issues we've had, which is forgetting to write for stretches of time. The reminders and ability to write from your inbox are great. In our experience, however, writing daily is difficult and—even if the group sticks to it—can feel like information overload on the reader's side. It may be nice to give the option to set custom time lengths to the reminders (once a week, once a month).
2) Preview
Screenshots or a demo of what the journal looks like once it's in use by a group would be helpful, so I have a clearer picture of what I'm signing up for. I was curious what it looked like so I followed your prompt ("Don't want to wait? Simply send an email to [email protected]…, and you can log right away") but when I sent the email, I was simply directed to sign up again. It didn't log my entry.
Hope to see this grow! Perhaps I'll be able to convince my friends to move to it someday. We've been on Blogger since 2008.
If the answer is no, there's no need to answer of course. If the answer is yes, I'd like to hear about your experience and overall impression of it as a paid subscriber. I've looked at other reviews and forums online of these products, but I value the opinions of this group in particular.
Let me know if I should clarify further.
No ability to search? I've just signed up, so it's possible I simply haven't found it yet (in which case, my feedback is that its location is not intuitive). I'm bummed as I saw an interesting comment somewhere as I was exploring. Now I can't go back to find it.
I just replied to the first reminder email I've received. It seems to think I'm not already signed up. My guess is it's because I signed up with a + in my email address (e.g. [email protected]). If you're not already aware, it's a common trick for gmail users that can confuse websites!
In other words... I signed up with [email protected], but because you're e-mailing me to prompt a response, my response comes from [email protected]. If you account for that, it should fix the issue. :)