If your job is matching each ad, audience, or known subscriber to the right message on the site you already run, and testing which version of that message wins, choose RightMessage. It's self-serve and month to month.
Pick one audience with a clear conversion opportunity, personalize it, then test a challenger version against it.
Signal
Without personalization
Every click lands on the same generic headline and proof.
With RightMessage
Match the headline to the ad's UTM audience, then test two ad-angle versions inside that audience.
Signal
Without personalization
They see the same opt-in prompts as a first-time visitor.
With RightMessage
Use ESP or CRM data to show a next step for subscribers, and measure it against the campaign holdback.
Signal
Without personalization
The page everyone sees never changes.
With RightMessage
Test up to 4 versions of the Original page, then deploy the winner until the site catches up.
Optimizely and RightMessage both let you personalize a website for audiences and test versions inside those audiences. The difference is the operating model. Optimizely sells a broad experimentation and personalization suite, individually packaged for each customer. RightMessage is a personalization platform with built-in A/B testing, aimed at marketing and paid-traffic teams who want to match the message to the visitor and find out which version wins, on a self-serve plan.
Optimizely's Personalization campaigns deliver experiences to audiences and measure the campaign against a holdback. With both Personalization and Web Experimentation, its Experimentation-in-Personalization feature tests variations inside an audience's experience.
RightMessage works the same way inside one campaign: each campaign has a holdback, and you can test up to 4 versions of each audience's changes or of the page everyone sees. Audiences come from on-site behavior, campaign and UTM context, quiz or survey answers, and supported ESP and CRM data, without a CDP in between.
| Decision | RightMessage | Optimizely |
|---|---|---|
| Test inside a personalized audience | Yes, on Pro: Control (the audience's changes) plus up to three challengers. | Yes, with Experimentation-in-Personalization, which requires both Personalization and Web Experimentation. |
| Campaign holdback | One per campaign, 10% by default and settable from 1% to 100%, starting on Scale. | One per Personalization campaign, 5% by default. |
| Test types | A/B tests of whole versions (up to 4), on the page everyone sees or inside an audience. No multivariate, split-URL, or server-side SDK testing. | A/B, multivariate, and multi-page experiments (experiment types), redirect experiments, and feature and server-side testing per its plans page. |
| Traffic split | Even, or custom from 1% to 99% per version. | Configurable traffic allocation and distribution, plus multi-armed bandits. |
| Statistics | Weekly verdicts that stay valid when checked every week, shown as a likely range instead of p-values. Split mismatch and contamination checks pause a verdict. | Stats Engine sequential testing you can monitor continuously, with frequentist and Bayesian options and automatic sample ratio mismatch detection. |
| Analytics hand-off | Every test version is sent automatically to each enabled GA4, Google Tag Manager, or PostHog app, with no extra plan needed beyond the tests themselves. | Documented GA4 and Google Tag Manager integrations and other analytics apps. |
| Overlapping experiments | No mutually exclusive groups across campaigns. Inside a campaign, a matched audience wins on the elements it changes. | Mutually exclusive experiments are supported. |
| Pricing | Grow $99, Scale $249, or Pro $499 per month, or $79, $199, or $399 per month billed annually, with no per-visitor or contact fees. Website personalization and holdback measurement start on Scale; page and audience A/B tests are on Pro. | No public prices: “Every Optimizely plan is individually packaged” (optimizely.com/plans). Vendr reports a median of $81,447 a year across 126 purchases.Prices last checked October 18, 2026. |
Optimizely covers experiment methods RightMessage doesn't: multivariate tests, redirect experiments, multi-armed bandits, mutually exclusive experiments, and feature and server-side testing through its SDKs. If a product or engineering team needs those methods across web and app surfaces, that breadth is the reason to buy it.
Keep your site and your email platform. Install the RightMessage snippet, build one campaign for one audience, and let the holdback measure it on Scale. On Pro, add a challenger version for that audience, check the estimated time to a verdict, and start the test. When a version wins, end the test and keep it. Then expand to more audiences.
Optimizely doesn't publish prices: “Every Optimizely plan is individually packaged.” Vendr reports a median of $81,447 a year across 126 purchases, with a range of $26,460 to $261,075. That is reported contract data, not a list price.Prices last checked October 18, 2026.
RightMessage publishes its pricing. A/B tests are on Pro: $5,988 a year billed monthly, or $4,788 billed yearly.
“I’ve seen jaws drop when I show companies this tool.”
For marketing and paid-traffic teams that want audience personalization with A/B tests inside it, yes. RightMessage is a personalization platform with built-in A/B testing: up to 4 versions of the page everyone sees or of each audience's changes, custom splits, a holdback per campaign, and weekly verdicts. It doesn't replace Optimizely's multivariate, redirect, bandit, or server-side SDK testing.
Optimizely doesn't publish prices; its plans page says "Every Optimizely plan is individually packaged." Vendr reports a median of $81,447 a year across 126 purchases. Grow $99, Scale $249, or Pro $499 per month, or $79, $199, or $399 per month billed annually, with no per-visitor or contact fees. Website personalization and holdback measurement start on Scale; page and audience A/B tests are on Pro. Prices last checked October 18, 2026.
No. RightMessage checks results weekly and shows a likely range instead of p-values. The checks stay valid when you look every week, and a version wins only when its whole likely range beats Control. On lower-traffic pages a verdict can take months, or may not come.
Yes. Each test version is sent automatically to each enabled GA4, Google Tag Manager, or PostHog app, with no extra plan needed beyond the tests themselves, so you can analyze tests alongside your other reports.
When you need multivariate or redirect experiments, multi-armed bandits, mutually exclusive experiments, or feature and server-side testing through SDKs across web and app teams.
Launch quizzes, segmentation, and website personalization from one system, then connect those answers back to the email platform you already use.
