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My existing app was OK but a bit expensive per message so I decided to give this one a try. Firstly, the customer support experience was great, and most importantly, they were able to assist me with importing my existing lists from the previous app. Setup was also a breeze, it integrated easily into my theme. There is also a good level of customisation, even on the free tier, and of course, much more if you opt for the paid plans.
There are some small things that could be improved/small bugs to fix in the UI, but overall it works well and I am happy with the move over to this app.