Email content that’s decided when it’s opened

Countdown timers, dynamic images, dynamic products, local maps and slideshows are drawn again at every open. Surveys and scratchers turn one click into a vote or a prize. Paste any of them into your ESP once. No code.

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A recreation: one send, opened three times. Every block under the retailer’s header is an Alterable image, and all but the survey are decided at the open. City and device come from your ESP; the weather follows the city.

Countdown Timers

A timer that is still counting when the email is opened, whether that is ten minutes after you sent it or two days later. Ten styles to pick from, evergreen deadlines that start at each recipient’s first open rather than on a fixed date, and it stops at zero instead of counting into negative numbers.

See Countdown Timers

Dynamic Images

One image URL that resolves differently for every reader: their first name set into the artwork, the city your ESP passes in and the weather there, how long they have left on the offer.

See Dynamic Images

Dynamic Products

Product picks chosen per recipient at the moment of opening, showing the price and stock you keep in Alterable as they stand right then, updated in the app, over the API or from Zapier. Sold-out items can hide themselves, so nobody clicks through to something that is gone.

See Dynamic Products

Local Maps

A map centered on the reader’s city, passed in from your ESP, marking your nearest branch and how far away it is. In mail apps that load images directly, it can use where the email is opened instead.

See Local Maps

Surveys

Ask one question and get an answer in a single click. A click on a star, number or emoji records the vote and opens your thank-you page, and results arrive while the campaign is still going out.

See Surveys

Scratchers

Turn a coupon into something earned. Design a scratch card, add your prizes and codes, and link it from any campaign. Alterable hosts the prize page, so there is nothing for you to build or deploy.

See Scratchers

Slideshows

Two to five slides in one animated GIF, each shown for as long as you say. A slide can be a dynamic image or product that renders for whoever opens the email, or a plain photo. Loop it or play it once, and give the whole thing one link.

See Slideshows

Rules, data and the tools you already use

Targeting rules and merge tags drive dynamic images and products. Analytics, Zapier, the API and the MCP server reach across the suite.

Targeting rules engine

Stack conditions on location, device, operating system, language, weather, temperature, time of day, timezone, date, day of week, hours since the send or first open, or a query parameter, and map each combination to what the reader sees. No code.

One rule-based version per image on Engage; unlimited on Pro

See the rules builder

Merge tags

Register your ESP’s merge tag once, in Mailchimp, Klaviyo or SendGrid syntax, and use the per-recipient value inside dynamic images and products. Set a fallback for empty fields.

Every plan

Impression analytics

Timers, images, products, maps and slideshows report impressions per day, top countries and the device split, with top cities on Scale. Surveys report votes and scratchers report plays.

Basic on every plan, advanced on Scale

Compare plans

Zapier integration

Trigger a Zap on a survey vote or a scratcher play. Create timers, extend deadlines, push merge-tag values, sync products and add map locations from any app Zapier connects to.

Pro and Scale, private beta

Browse triggers and actions

REST API

Every element is available over a JSON API with token authentication, so timers, images, products and maps can be created and updated from your own tools, not just the dashboard.

Pro and up

API reference

MCP server

Connect Claude, ChatGPT or Cursor to your account. Describe the timer or the image you want, and the assistant creates it and hands back the embed code.

Pro and up

Set up the MCP server

Works with your email platform

Each element is an image tag, or linked images for surveys and scratchers. Paste it into Klaviyo, Mailchimp, HubSpot, Brevo, or any ESP that accepts an image tag with merge tags. If your ESP can show an image, it can show all seven.

+ more, with setup guides

Start with one element in your next campaign

Every element is on the free Engage plan, up to 10,000 impressions a month (one impression is one element loading in one opened email). Pro, at $49/mo, adds evergreen timers, unlimited rule versions, A/B tests, the API and the MCP server.

Get started free View pricing

No trial, no time limit, no credit card.