Works with your ESP, without a connector

Emailens does not ask you to authorise an OAuth app or wait for us to support your platform. Every campaign already has a web version, and that page is the real sent HTML. That one fact is the integration, and it works with the ESP you use today as well as the one nobody has heard of.

Import by link

Paste a campaign's view-in-browser URL. We fetch the rendered HTML and check it across 21 clients. No export, no plan upgrade, no copying markup out of a builder.

Import a campaign

Take the code with you

Copy or download the HTML we analysed. Useful when the platform will not export it: Mailchimp cannot export a drag-and-drop template at all, so the web version is the only clean copy of your markup.

Import and export

Gate the send

One request, one boolean, and the reasons. Put it in front of a send in Zapier or CI and a campaign that regressed never goes out.

Read the API

Setting it up

1
Get the campaign's browser link
Most ESPs put a view-in-browser link in the email itself, and that page is the HTML that was actually sent. Send yourself a test, open it, and copy that link. How each platform produces one differs, so see the note below.
2
Paste it into Emailens
Open New Preview and paste the link into Import from your ESP. We fetch the page and check it across 21 clients, with dark mode, accessibility, size and merge-tag detection.
3
Gate the send, if it is automated
POST the same link to /api/gate and get one boolean back. Put it in front of a send in Zapier or CI and a campaign that regressed never goes out. Pro plan.

By platform

Merge-tag detection works on all of them, and there is a test that runs each syntax below through the real engine. URL import is marked verified only where a live campaign was actually fetched, unwrapped and rendered. Everywhere else, paste the HTML.

Mailchimp

Check a campaign across 21 clients without an export, using the campaign page link Mailchimp already generates.

*|FNAME|*URL import verified

Klaviyo

Klaviyo previews the builder's output. This previews what Outlook, Gmail and Apple Mail will actually do with it.

{{ first_name }}URL import verified

HubSpot

Personalisation tokens that quietly fail to resolve, caught before the send rather than in a reply.

{{ contact.firstname }}Paste the HTML

Braze

No browser copy to fetch, so paste the HTML instead. Built for teams who ship email from a pipeline anyway.

{{ ${first_name} }}Paste the HTML

Salesforce Marketing Cloud

AMPscript that did not resolve is the one send accident nobody catches in review.

%%FirstName%%Paste the HTML

The rest are being tested

URL import is verified on Mailchimp today. Klaviyo, HubSpot and Salesforce Marketing Cloud are in testing and will be marked verified here the moment a real campaign has been imported, unwrapped and rendered end to end, not before. Until then, paste the HTML: every check on this page works exactly the same either way.

Not on the list?

That is the point. Nothing above is vendor-specific plumbing: if your platform can produce a web version of a campaign, or you can paste its HTML, everything on this page works. The named platforms are here because their merge-tag syntax is worth spelling out, not because the others are unsupported.

Check a campaign now

Paste a view-in-browser link and see it across 21 clients. Free tier, no credit card.

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