Instantly

Instantly is a cold email platform that combines AI personalization with email deliverability infrastructure. It manages email warmup, sender reputation, and inbox rotation across multiple sending accounts, solving the biggest technical challenge in cold outreach — actually landing in the inbox. The AI writes and personalizes email sequences, while the platform handles the technical side of sending at volume without triggering spam filters. The lead database includes over 160 million contacts with verified emails for prospecting. Instantly is popular with agencies and startups running outbound campaigns. The pricing is straightforward compared to enterprise tools, and the deliverability features genuinely work. The main caveat is that cold email effectiveness depends heavily on targeting quality — no tool can fix bad prospect lists.