We're setting up our outbound stack with Clay handling enrichment, validation, and AI copy, and trying to decide between Clay's native sequencer and Instantly for the sending side. The main thing I'm trying to understand: does Clay's native sequencer offer pre-warmed sending domains and mailboxes the way Instantly does? That feels like the biggest practical differentiator — Instantly's pre-warmed accounts mean you can start sending immediately without going through a warmup period yourself. Has anyone used Clay's sequencer in production and compared deliverability to Instantly? Would love to hear honest takes. Also — for those running this kind of setup at a seed stage with relatively modest volume (~500 contacts/month, 4-5 step sequence): which Instantly tier are you on, and is Growth ($47/month) sufficient or did you find you needed Hypergrowth?
I use Supersend
Hey Olga K. I feel the biggest gap still feels like deliverability maturity. Clay’s sequencer is getting strong fast, especially for AI personalization and workflow automation, but Instantly still seems ahead on the sending infrastructure side with pre-warmed inboxes, rotation, and warmup reliability. For lower volume (~500 contacts/month), I’d personally keep Clay for enrichment/personalization and use Instantly Growth for sending. Hypergrowth feels unnecessary unless you’re scaling aggressively or managing multiple outbound brands/clients. The all-in-one vision with Clay is really appealing though curious to see how their deliverability performs over the next 6–12 months.
yeah and you can pass over your messaging variable over API as well
Clay does not provide pre-warmed mailboxes - it is a "Bring Your Own Pipes" system. You connect your own Google Workspace or Outlook accounts, whereas Instantly’s "Done-For-You" (DFY) accounts are ready to send out of the box. That is the single biggest practical differentiator between the two. Here is the 2026 reality check for your setup: • Infrastructure: In 2026, deliverability is all about isolation. Google and Outlook have become elite at fingerprinting shared warmup patterns. While Instantly's DFY accounts get you moving faster, self-managed mailboxes on dedicated domains are significantly more durable for long-term campaigns. If you go with Clay, you'll need to buy domains and warm them for 2–3 weeks first. • Deliverability: Clay’s native sequencer is excellent for keeping your data and sending in one place, but it won't "fix" bad inbox reputation. Most high-level teams use Clay for the enrichment and then push to a dedicated sender like Instantly or Smartlead for the infrastructure management. • The Math: For 500 contacts at 5 steps (~2,500 total emails/month), Instantly Growth ($47/mo) is perfectly sufficient. It caps at 1,000 uploaded contacts and 5,000 sends, so you have plenty of breathing room. Hypergrowth is overkill until you scale past 1,000 new leads per month. So, if you want "push button" simplicity, use Instantly for sending. If you want a "cleaner" long-term reputation and don't mind a 14-day setup delay, use Clay's sequencer with your own dedicated mailboxes.
