BestAIforEmailSee top picks

Reply.io vs Grammarly

A side-by-side comparison of two AI tools on pricing, fit, and capability.

Reply.io
Sales Engagement
Grammarly
AI Writing
8.2/10Rating8.5/10
outreachTierwriting
Sales EngagementCategoryAI Writing
From ~$49/user/moStarting priceFree; Pro from ~$12/mo
Per-seat / moPricing modelPer-seat / mo
Cloud SaaSDeploymentCloud SaaS
YesSelf-serveYes
Teams that want an AI SDR layered on multichannel outreachBest forPeople and teams who want consistent, polished email everywhere they type

Our verdict

On balance, Grammarly edges ahead at 8.5/10 — but if your budget, tier, or existing stack favors the other, it can be the better fit. Read both full reviews.