Grammarly alternative for people who want a send gate, not a grammar checker

First, What Presend Is Not

Presend does not check grammar or spelling. If you type "recieve", it will not tell you. If a sentence is missing a verb, it will not notice. It is not a writing assistant, and if better proofreading is why you are looking for a Grammarly alternative, the honest recommendation is a proofreader — LanguageTool and ProWritingAid are the usual candidates.

This page is for the other reasons people leave.

The Three Reasons

It never stops a send. Grammarly is an advisory layer. It underlines, it suggests, and it watches you click Send regardless. There is no moment in the flow where it says "not this one." The most expensive email mistakes — a pasted credential, a customer's contract value in a message to a different customer, a promise legal did not approve — are not grammar problems, and no proofreader will ever catch them.

Presend intercepts the send gesture and raises a confirmation when it finds something classed as risk. That is the entire product, and it is the thing Grammarly structurally cannot be.

It keeps your text. Grammarly processes what you write on its servers and retains it under its terms. For a blog post that is fine; for a contract, a termination letter, or a customer's account details, people reasonably hesitate. Presend does not store message bodies. What is kept is a one-way hash — enough to count, not enough to reconstruct — and the voice profile never leaves the browser.

It makes everyone sound the same. Every suggestion nudges toward a smooth, hedged, corporate register. After enough accepting, your email reads like everyone else's, and recipients notice. Presend runs the opposite check: a local voice engine compares the draft against your own sent messages and tells you when it has drifted, underlining the sentences responsible. A separate slop engine counts model tells. Neither cares whether the grammar is correct; both care whether it sounds like you.

The Grammarly-Superhuman Bundle

Since Grammarly acquired Superhuman in July 2025 and took its name, the writing product is one part of a suite. Pro is $12 a month on annual billing or $30 month to month; the Business tier bundles Superhuman Mail and Coda at roughly $33 per member on annual billing. If you only wanted a grammar checker, you are now buying into an email client's roadmap. That is a legitimate reason to look around, and also a reason to note that Presend is deliberately not a suite — it is one gate, and it runs alongside whatever you write in.

Run Both

The realistic setup for most people is a proofreader for the prose and Presend for the gate. They do not conflict; Grammarly underlines inside the compose box and Presend's pill sits beside the send button. What changes is that the send can now be interrupted, the message cannot carry a secret unnoticed, and the draft gets measured against your own voice rather than against a house style.

What Presend Checks

Ten built-in rules — credentials by vendor prefix and by sentence label, SSN and card patterns, attachment and link mentioned but missing, external recipients listed by address, empty subject, missing sign-off, AI phrasing with suggested replacements, banned phrases, subject/body company mismatch — plus the slop and voice engines, plus rules you write yourself in plain English with a severity each. It runs in Gmail, Outlook Web, Slack, LinkedIn, X and every other compose box on the web.

Free covers twenty-five AI checks a day with local rule checks and voice scoring unlimited. Pro is $3 a month. Team is $29 per user per month.