The platform seems mature and well developed. The UI is great and UX is very intuitive, which makes the platform easy to use and set up. I was quickly able to launch a campaign and the deliverability seems ok. I like the fact it offers SMTP, which makes my life easier. Also, it allows campaign previews, which is a very nice feature. Overall it is a good platform for emails, and also offers the ability to send SMS campaigns (credits purchased separately) so I don't have to use multiple platforms. Some areas of improvement is Automations, while it has decent automation capability, there is potential for it to be developed further to be made more robust with greater features. Finally, if you are in the market for an email sending platform, you should definitely try this one, it is a nicely built product.