First off, Cleaned our clients subscriber lists (both free and paid) uploaded everything just fine without issue. next went to do our first send, which was a bit lower open rates than our traditional sends (typically are around 9-10%, came in at around 6%) shut down and flagged all my remaining contacts due to not hitting their open rate. I then removed individuals that weren't active in the last 14 days, and was able to get our send to go through just fine. I then had another email go out, that was suspended because the open rate was reduced down to 3%. my most recent campaign I decided to focus in on our paid subscribers and those who have engaged since we switched to sendinblue. this most recent send I used the optimize delivery time over 24 hours, which I've typically seen better open rates from using. surprisingly the single worst send yet at 1.8%. Support is extremely unhelpful and I can't even get simple questions answered from them. Don't waste your money.