Small, single-purpose tools we built and use ourselves. Each one runs entirely in your browser: no signup, no email capture, and every one of them works whether or not you ever use OnVoard.
The problem
You wrote a subject line and do not know if it reads as spam, gets cut off on a phone, or is missing the one thing that gets an email opened.
What it does
Scores any subject line against nine checks tuned to the campaign type (welcome, cart abandonment, back-in-stock, and more), and shows exactly how it renders on mobile and desktop inboxes.
Test a subject line →The problem
Klaviyo, Omnisend, Mailchimp, Brevo, MailerLite and OnVoard all price differently: by contacts, by sends, by active subscribers. Comparing list prices across them by hand is slow and easy to get wrong.
What it does
Set your contact count and monthly send volume once, and see what all six platforms would actually charge, cheapest first, with the source and date behind every figure.
Compare platform pricing →The problem
Markup and margin are different numbers, and mixing them up over- or under-prices a product. On top of that, most calculators cannot tell you the one thing you actually need before a sale: how big a discount you can run without losing money.
What it does
Works out markup, gross margin, profit per item, price from a target margin, sale economics after a discount, and the maximum discount that still holds your margin, with the formula and arithmetic shown under every result.
Calculate markup →OnVoard runs the marketing behind the numbers these tools help you get right: cart recovery, back-in-stock alerts, review requests, and campaigns, from one place.