00
The writing assistant
Draft your next send — without leaving your AI tools
Ask it from Claude Code, ChatGPT, Codex, or the API. It drafts the subject, heading, paragraphs and button, puts them in the editor, and sends from your domain. No browser required to start.
- Write from Claude Code, ChatGPT or the API
- Editable blocks, not raw HTML
- Web research included — no extra charge
01
What it returns
Fix one block without touching the rest
Your email arrives split into blocks in the editor: the heading, each paragraph, the image, the button. Open the one that needs work; the others stay put.
- Outlook, Gmail, Apple Mail: the email arrives intact
- TitleLet's end the year together
- ParagraphFriday December 31, at 9 pm, we meet online for the last session of the year.
- Imagephoto of the last session
- ButtonReserve my spot
- Divider
- Space
Up to twenty blocks per email.
02
Your voice
Set once, kept for all
Tone, length, register, and emojis: four settings you configure once for your whole workspace. A phrase in your request always overrides a setting.
Tone
Calm and clear, without stiffness. Facts, clean sentences, no familiarity.
Length
Register and emojis
The mindset
- 01
It drafts. You approve and send.
- 02
It never refuses. It leaves a bracket.
- 03
It searches the web. It does not guess.
- 04
Works from the API. No browser required.
- 05
It hands back control. Always.
03
Coming back to it
You revise, it rewrites the whole thing
'Shorten the second paragraph and make the CTA more direct' is enough: it sends back the whole email corrected, not just the changed part.
- you
A newsletter announcing our webinar on Thursday January 7 2027 at 3 pm EST, professional tone, a registration button.
- l'assistant
Subject, preheader, and four blocks. The registration link is in [brackets] — it doesn't have it.
- you
Shorten the second paragraph and make the button more direct.
- assistant
Same text, that paragraph in two sentences, button copy updated. The rest stays.
- Never a required step: the editor stays yours
04
From text to send
Once written, the email goes out
1
In the editor
Your email arrives split into blocks. No export, no copy-paste.
2
Checked
Twelve checks before sending, six of which block the send.
3
Sent
Right away or on the date you choose, from your domain.
From your tools
Ask it to write without opening Mailcheer, from your agent.
- Claude Code
- ChatGPT
- Codex
- CLI & scripts
- Your application
What it costs
Try it on a real send
3,000 emails a month free, no credit card. Works from the browser, the MCP server, the REST API, or the CLI. The AI budget is included in your plan: when it runs out, you write by hand and the rest of Mailcheer stays the same.
| Plan | Emails / month | Per month | AI budget |
|---|---|---|---|
| Starter | 3 000 | 0 € | 0.20 € |
| Essential | 40 000 | 19 € | 2 € |
| Pro | 150 000 | 49 € | 10 € |
| Agency | 500 000 | 129 € | 40 € |
The bars compare sending volumes.