ReadyStack · Newsletter Desk
Explainer in three steps. Problem: Gmail and Yahoo check sender rules before a small business newsletter reaches the inbox. Newsletter Desk with the sample bakery newsletter: subje
One flat price for unlimited contacts: unsubscribed never counted, nothing billed per emailSend through your own provider and export your list any time. Every month new subscribers are confirmed and welcomed for you; cancel and export everything for 30 days.

Use the free versionUnlock the full version

Also on: Whop

Email marketing and newsletters for small business: one flat price, however big your list grows

Email marketing and newsletter app for small businesses: drag-free block editor, contact lists, double opt-in signup form, welcome emails, scheduling, opens and clicks, and a version of each email per language (English, German, Spanish, Portuguese, Japanese).

Editor, contact lists, signup form, welcome emails and a version of every email per language

Start sending: $12/month $120/year

Free, no signup: write a newsletter, see it at desktop and phone width, check it against the Gmail and Yahoo sender rules and your domain's SPF, DKIM and DMARC, and clean any pasted list on screen.

Write a newsletter (free)

Start from a template or load the sample. The preview on the right is the exact email that goes out.

One version per language: each subscriber gets the version in their language, or the main version.

Add

**bold** · *italic* · [link text](https://…) · {{first_name|there}} = the subscriber's first name

Look and sender

Send check

16 rules before every send: Gmail and Yahoo sender rules, the law (postal address, unsubscribe) and what makes people open.

Your sending domain

    Rules read on 2026-10-30 from Google's sender guidelines (support.google.com/a/answer/81126): all senders need SPF or DKIM; above 5,000 a day to Gmail also DMARC, a From domain aligned with SPF or DKIM, one-click unsubscribe and a visible unsubscribe link.

    Clean a list (free)

    Paste addresses from a spreadsheet, a CSV or an old tool, any number of rows. Nothing leaves your browser.

    Have a key?

    $12 a month or $120 a year for the whole account, unlimited contacts. Billing runs on Whop.

    Questions

    Email me this result
    A copy of what you see above, in your inbox — the tool stays free, nothing here is locked.

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