Grammarly

Affiliate program

Grammarly's affiliate program pays a flat bounty per conversion (reported around $20 per premium signup, smaller amounts for free signups), tracked over a 90-day cookie window.

What it does

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Grammarly is a writing assistant that checks spelling, grammar, tone, and clarity in real time across browsers, documents, and email, and has expanded into generative AI writing help and a Business tier with brand style guides.

The standout feature is how invisible it becomes once installed: it runs inside Gmail, Google Docs, LinkedIn, and most places text gets typed, catching tone and clarity issues, like a message reading more aggressive than intended, before it gets sent, not just fixing spelling errors after the fact.

The free plan's generative AI features are capped at 100 prompts a month, which is workable for occasional tone checks or short rewrites but gets exhausted quickly by anyon

Who this helps

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• A marketer or founder who writes their own emails and social copy and wants a second pair of eyes on tone before hitting send

• A non-native English speaker on a team who wants real-time grammar and clarity checks across everything they write

• A small team that wants basic brand voice consistency without hiring an editor

• Not a good fit for someone expecting unlimited AI rewriting on the free plan, the 100-prompt monthly cap gets used up fast with regular drafting work

Screenshot

A live proofreading suggestion card showing a grammar fix with Accept/Dismiss actions,

Free tier:

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See the vendor site for current free tier details.