At OnlineRockersHub, we use SendInBlue as our Email Marketing Software.
I have been using SendInBlue for the last 3 years and the Pros and Cons listed is based on my experience with it.
The free plan allows us to send 300 emails/day and lets us manage unlimited contacts effortlessly.
Even the free plan has got features of Email Automation and Transactional Emails.
Creating an Email Funnel to send a series of newsletters is so easy.
The support team has been professional and responsive to fix any issues.
SendInBlue Team is very particular about email deliverability. If your Email Campaign reports show high bounce rate and low open rates, your campaigns will be temporarily paused and you will be asked to clean your list or proceed with Dedicated IP address.