Instantly vs Smartlead
Both are top cold email platforms. Smartlead wins on AI personalization. Instantly wins on deliverability infrastructure. Here's when each is the right call.
After testing both tools on real outreach campaigns, Smartlead is the better all-around choice for most sales teams. Its AI personalization produced a 6.1% reply rate vs Instantly's 4.2% on the same contact list, a meaningful gap. Instantly is a close second and the preferred choice for teams running very high sending volumes where deliverability infrastructure is the primary concern.
For most sales professionals, Smartlead is the better choice, the AI personalization advantage directly translates to more replies. Teams running 10,000+ emails/week with multiple domains should evaluate Instantly's deliverability infrastructure as a priority.