Alterable

Overview

Alterable is an email personalization tool for campaigns that need content to change at the moment a message is opened. It is best suited to marketers adapting imagery, deadlines, or product details in email; teams seeking personalization across multiple channels should look elsewhere.

Key features

Content is built in a browser and added to a campaign as an image tag. Alterable renders that image again each time a recipient opens the message, supporting countdowns, personalized images, dynamic products, local maps, surveys, and scratchers. Its image-tag method is compatible with platforms including Klaviyo, Mailchimp, HubSpot, Brevo, GetResponse, Constant Contact, and Omnisend, giving email teams a way to add changing content without replacing their campaign platform.

Countdowns support fixed dates, evergreen deadlines, and merge-tag deadlines, then stop at zero when time runs out. A no-code rules builder selects image variations according to conditions such as location, device, language, weather, temperature, time of day, date, and query parameters. That range is useful for tailoring a message to context, though the personalization remains within email.

Dynamic product content can reflect current prices and stock levels, with product matching, product swapping, and low-stock warnings. Alterable also says it uses standard email images without JavaScript and does not change the sender’s domain or SPF, DKIM, or DMARC authentication. Pro and Scale include API and MCP server access; MCP clients connect with an API token or OAuth. These options make the paid tiers more suitable for teams integrating email content into broader workflows.

Impressions and support

A loaded service view counts as an impression. Engage does not bill for overages, but editing pauses when its monthly allowance is reached until the allowance resets or the account is upgraded. That avoids surprise usage charges on the free tier, at the cost of interrupted editing for campaigns that outgrow the cap. Support also scales with the plan: Engage is self-serve, Pro offers priority email responses within 24 hours, and Scale offers dedicated support within eight hours.

Pricing

Engage is free forever, requires no credit card, and includes 10,000 impressions per month. It also provides local maps for up to 10 locations, single-prize scratchers, one rule-based version per image or product, and basic analytics. This is a useful starting point for modest campaigns, but its impression ceiling and simpler content options make it a poor fit for high-volume senders.

Pro costs 49.00 USD per month and includes 500,000 impressions, A/B testing, API and MCP access, Zapier integration (beta), and priority support with responses within 24 hours. Overages cost $1.00 per 1,000 impressions. It suits growing teams that need testing and integrations, though usage beyond the allowance adds cost.

Scale costs 199.00 USD per month and raises the allowance to 2,500,000 impressions. It adds advanced analytics, API and MCP access, Zapier integration (beta), dedicated support with responses within eight hours, and a lower overage rate of $0.80 per 1,000 impressions. High-volume senders with greater support needs have a clearer case for this tier; smaller teams may not need its expanded allowance.

Enterprise has custom pricing for businesses with large sending volumes or unique business models. It includes integration assistance, an account manager, volume discounts, and dedicated support. Alterable has no free trial; the Engage plan is the ongoing free option.

Platforms

Alterable supports web and API access, with email as its supported channel. The browser-based builder and image-tag workflow make it relevant to email campaigns, not a general-purpose cross-channel personalization program.

Who it's for

Alterable is a strong fit for email marketers who want messages to reflect changing deadlines, audience context, or product availability when opened. Engage suits smaller campaigns exploring those use cases; Pro is aimed at growing teams, while Scale targets high-volume senders. Businesses needing personalization beyond email should compare other options.

Pros and cons

• Pros: Content can change at each open, supporting timely offers and product information without rebuilding the original email.
• Pros: Rules can adapt images to a broad range of contextual factors, and the image-tag approach works with several named email platforms.
• Pros: Engage offers a no-cost starting point with 10,000 monthly impressions and no overage billing.
• Cons: Engage pauses editing at its monthly impression limit, which can disrupt work until reset or upgrade.
• Cons: Its supported channel is email, so teams seeking broader channel coverage will need another tool.
• Cons: Pro and Scale overages are chargeable, making usage monitoring important as campaigns grow.

Alternatives

Browse Email Personalization Software for more options in the category.

Recombee is worth considering for recommendation use cases that need Android, iOS, API, and web support; its free plan allows fewer than 100,000 interactions and recommendation requests per month, fewer than 20,000 active users, and fewer than 20,000 catalog items.

Wiser AI may suit buyers looking for order-based pricing: its free plan covers up to 50 orders, and its next tier is 9.00 USD per month for 51–100 orders.

LimeSpot is an alternative for stores with up to 250 orders per 30 days from the Online Store channel; its LimeSpot Turbo plan costs 19.99 USD per month and is unavailable to Shopify Plus stores.

Personyze offers a free plan with 5,000 pageviews, one domain, three active campaigns, eight AI tasks a month, and email support, making it an option for teams evaluating campaign-based personalization.

Athos Commerce Personalization is another paid option for web-based commerce personalization.

Clerk.io is a paid alternative with API and web platforms and a free trial.

Hello Retail Product Intelligence may fit email programs priced by volume: Product Agents costs 99.00 EUR per month, billed annually, for 5,000 emails, with €50 per 1,000 emails overage and credit-based pricing.

Kimonix Ecommerce Personalization is a paid web option with a seven-day free trial and usage charges per agent answer and search.

Verdict

Choose Alterable if your priority is email content that adapts at open—especially imagery, countdowns, or current product details—and its impression-based pricing fits your sending volume. Look elsewhere if you need channels beyond email or cannot risk editing pauses at Engage’s monthly cap.