Instantly vs Nullstep

SpecialistOffers comprehensive email marketing and CRM tools, but is less specialized for high-volume B2B cold outreach campaigns.

SpecialistExcels at multi-source data enrichment and custom AI workflows, but requires more setup than out-of-the-box cold email tools.

Delivers enterprise-grade revenue intelligence and deal execution tools, but is significantly more expensive and complex than Instantly.

Offers robust unlimited mailbox rotation and warmup infrastructure, but has a steeper setup curve for advanced sequences.

Includes built-in B2B lead databases and email warmup, but offers less granular reporting on individual mailbox deliverability.

Turn one prompt into live business apps, AI agents and automated workflows

The AI super app for work — tasks, projects, calendar and meetings in one place

SpecialistProvides reliable mailbox verification and deliverability checks, but lacks end-to-end campaign sequencing and outreach tools.

A visual AI planner built for every neurotype

Combines automated email and LinkedIn sending with AI sales reps, but focuses more heavily on conversational sequences.

Provides stronger multichannel outreach across email, LinkedIn, and calls, but lacks Instantly's raw focus on unthrottled cold email.

Tasks, calendar and an AI sidekick in one time-blocking planner