# Email on Acid review (2026): is it worth $99 a month? > Email previews and pre-send QA, now moving to Mailgun Inspect Checked Nov 13, 2026 ยท graded Nov 13, 2026 by ToolGPA. Email on Acid previews an email's HTML across 100+ clients and devices before it is sent. Higher plans add accessibility, link, image, code and spam-content checks. The vendor says current customers are moving to Mailgun Inspect, the next-generation product from Mailgun, and that the two are the same line of tools. - **Category:** Email Verification & Deliverability - **Made by:** Email on Acid - **Website:** https://www.emailonacid.com - **Runs on:** Web - **Who should skip it:** Pricey if you add it up, at $99 a month for 1,000 previews. - **Facts last checked:** Nov 13, 2026 ## Pricing As of Nov 13, 2026, Email on Acid is a paid product with a free trial, starting at $99 per month. - **Pricing model:** Free trial - **Free plan:** None. - **Free trial:** Free trial offered; its length is not stated on the page. | Plan | Price | What you get | | --- | --- | --- | | Basic | $99 per month for 1,000 previews | Unlimited users, 100+ preview clients and devices, API access; extra previews cost $0.15 each. | | Premium | $199 per month for 2,000 previews | Adds accessibility tests, HTML code analysis, link and image validation and spam content checks. | | Contract | Custom | Custom preview allotment with the Premium feature set and phone and chat support; sold through sales. | Read from https://www.emailonacid.com/pricing/ on Nov 13, 2026. Prices change, so confirm with Email on Acid before buying. ## Key features - **Client and device previews:** Each screenshot of a client or device counts as one preview, so a test across 50 clients uses 50 previews. - **Accessibility checks:** Premium tests are based on the W3C Web Content Accessibility Guidelines, which the vendor ties to the European Accessibility Act. - **Link and image validation:** Premium checks links and images in a message. The FAQ says these checks, unlike previews, are unlimited. - **Spam content analysis:** Premium includes content spam checks and HTML code analysis, judged on the message itself and not on your sending reputation. - **API access and unlimited users:** Every plan includes API access, and none of the plans limit how many people on a team can use the account. ## Good for - Email developers testing HTML across many clients - Marketing teams that need pre-send QA with any email service provider - Larger teams, since seats are unlimited ## Worth knowing - The pricing page says current customers will move to Mailgun Inspect from June 2026, and that old previews and tests are not carried over. - Annual-plan customers migrate at the end of their current term. - Basic has no accessibility, spam or link checks; those start at Premium. - It does not send email; the FAQ says you need a separate sending service. ## ToolGPA grades **GPA: 1.8 out of 4**, graded Nov 13, 2026. Email on Acid shows your email across 100+ clients and devices, with unlimited users and an API. Accessibility, spam and link checks only start at Premium, and its pricing page says customers are moving to Mailgun Inspect from June 2026, with old previews not carried over. - **Value for money: D.** Basic is $99 a month for 1,000 previews, above the category's dearer quarter ($49). The checks most people want sit on Premium at $199. - **Free plan and trial: D.** A free trial is offered, but the page states no length. - **Features: C.** Previews, accessibility, link and image checks and spam analysis. It does not send email. - **Ease of use: C.** No rating on record. Paste or send the email and read the results, with a migration to Mailgun Inspect under way. - **Platforms and integrations: B.** Web, with an API and unlimited users on every plan and one listed integration. These are ToolGPA's own grades. Graded from this listing, whose facts were read from Email on Acid's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. ## Where it stands among email verification and deliverability tools - Email on Acid's GPA of 1.8 is higher than 4 of the 61 other email verification and deliverability tools we grade, and level with 3. - It stands best on platforms and integrations (B, above 28 of 61) and worst on value for money (D, above 0). - Its paid plans start at $99 a month, against a middle price of $21.50 for the category: 38 of the 43 others that charge start lower. - On features, ease of use and platforms it scores 2.3 out of 4. 8 tools score higher and cost less. The category's chart of price against score: https://toolgpa.com/charts/email-deliverability ## Keep it, or make your own? **Keep it.** To replace Email on Acid you would be making newsletters sent to thousands of people that still reach the inbox. That is not a weekend's work, with an AI app builder or without one. That makes this kind of software worth paying for, not this one in particular: 54 of the 61 other email verification and deliverability tools grade higher. It costs $1,188 a year. - You could make: Reports: an app builder makes this well. - You could not: Newsletters sent to thousands of people that still reach the inbox. - You could not: It plugs into other products, Mailgun among them, and has an API. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. ## Works with Mailgun **Tags:** Email campaigns, Reports, Public API ## Alternatives - [Inbox Monster](https://toolgpa.com/tools/inbox-monster): Email rendering previews and inbox placement testing. [Compare](https://toolgpa.com/compare/email-on-acid-vs-inbox-monster) - [GlockApps](https://toolgpa.com/tools/glockapps): Inbox placement testing with DMARC analytics and uptime monitoring. [Compare](https://toolgpa.com/compare/email-on-acid-vs-glockapps) - [MailGenius](https://toolgpa.com/tools/mailgenius): Email spam-score and deliverability tester with DNS checkers. [Compare](https://toolgpa.com/compare/email-on-acid-vs-mailgenius) - [Mail-Tester](https://toolgpa.com/tools/mail-tester): Send an email to a test address and get a spam score out of 10. [Compare](https://toolgpa.com/compare/email-on-acid-vs-mail-tester) - [Validity Engage](https://toolgpa.com/tools/validity-everest): Inbox placement and sender reputation monitoring for brands. [Compare](https://toolgpa.com/compare/email-on-acid-vs-validity-everest) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 13, 2026: - https://www.emailonacid.com/pricing/ - https://www.emailonacid.com/ Page: https://toolgpa.com/tools/email-on-acid Listed by ToolGPA (toolgpa.com).