Alterable creates email content that is rendered again when a recipient opens a message. Users build content in a browser and add an image tag to an email campaign; supported content includes countdowns, personalized images, dynamic products, local maps, surveys, and scratchers. Countdown timers can use fixed dates, evergreen deadlines, or merge tags, and stop at zero after the deadline. A no-code rules builder can select image variations based on location, device, language, weather, temperature, time, date, and query parameters. Product content can display current prices and stock levels, with options for product swapping, matching, and low-stock warnings. Alterable says its image-tag approach works with email services including Klaviyo, Mailchimp, HubSpot, Brevo, GetResponse, Constant Contact, and Omnisend. The free Engage plan includes 10,000 impressions per month and requires no credit card. Pro costs $49.00 USD per month and Scale costs $199.00 USD per month; both include API and MCP server access. Engage has no overage billing, but editing pauses when the monthly impression limit is reached until reset or upgrade.
Who it is for
It suits email teams that want content to change based on recipient context or product data. The listed plans include options for growing teams and high-volume senders.
What is good
- Renders email content again at each open
- Supports countdowns, maps, surveys, and scratchers
- Rules can use location, device, and weather
- Works with several named email platforms
- Free plan includes 10,000 monthly impressions
What to know first
- Editing pauses at Engage's monthly limit
- Engage includes only basic analytics
- Pro costs $49.00 USD per month
Verdict
Alterable is focused on dynamic content delivered through email image tags, with rules and product options for changing what recipients see. Check impression limits and the plan's support terms for your sending needs.
Alterable plans and pricing
All plansCompared on email personalization software
- Free plan
- Yes
- Paid from
- $49/mo
- Behavioral triggers
- Yes
- Dynamic content
- Yes
- Product recommendations
- Yes
- Real-time personalization
- Yes
- Channel support





