I hope that Dynosend has a bright future, the product has a good foundation and covers a lot of use cases.

The audiences concept combined with tags, events, and segments is extensible enough for complicated campaigns and automations.

The automation workflow works well. It looks simple but all the main components needed seem to be there, with a few power things in their development roadmap.

The campaigns right now are basic and simple, but seem to do what is needed at the moment. This will be an area they can improve.

I'm not a huge fan of the email builder, but in my case, I would rather import my templates and they provide that, and then you can edit in their code editor if needed. Setting up your dynamic tags and importing seems to be my usage model at the moment.

And the transactional email works well via API.

I was able to get everything working as expected using Pabbly Connect from creating and updating contacts in audiences to sending transactional emails.

I'm just in the setup stage so can't comment regarding deliverabliilty and timing of things, so hopefully those perform as expected.

Overall there is nothing seriously lacking with the tool, and the design is intuitive and works well, so I am happy with getting this via AppSumo. Hopefully they will have much success and continue to develop and enhance it long term.