Quickmail vs. Clay: Seeking Feedback on Email Sequencers

I saw somewhere that Clay was rolling out an email sequencer, our team currently uses Quickmail, anyone A) had success with some controlled customization of emails in Quickmail, B) anyone uses Clay's email sequencer? C) Is it actually launched and functional? Quickmail has been a huge part of our outbound stack, does everything we want it to, but its AI rewriting hasn't been great, and having some ability to "automate" some of the personalization would be cool... But I'm happily willing to look at Clay's sequencer, just didn't hear anything about it in the 101 cohort training I went through...