MailSlurp adds AI token disclosures and email warm-up as usage caps quietly c...
What happened
Between the Sep 14, 2026 and Sep 21, 2026 captures of MailSlurp's pricing page, Pulse recorded 3 changes: 'Compare plans' feature-comparison grid removed, replaced by per-plan 'At a glance' panels; phone pricing table went from headers-only to fully populated per-country SMS/MMS/rental rates; Growth device renders rose 10→200/month, placement tests 10→100/month; Free's renders/tests fell 3→1 each; AI token allowances now disclosed per plan (Free: 5,000/month); 'Agent' connection limits (1/1/3/10 per. In detail: 'Agent' connection limits (1/1/3/10 per plan) removed entirely from cards, comparison table, and FAQ; new 'Email warm-up' feature added, included for Pro (1 sender) and Growth (3 senders). Pulse files it as a packaging change (limit increase, feature removed, package change) with an upward direction. Pulse's latest capture (Oct 12, 2026) lists Starter at $19.17, Pro at $45.83, Growth at $116.67, Inbox placement at $1 per test and Device rendering at $0.5 per render.
It lands 14 days after MailSlurp's previous change, "MailSlurp kills paid trials for Pro and Team, points users to Free plan" (Sep 7, 2026). Before that Pulse recorded "MailSlurp: Free & Phone number capacity increased" (Aug 31, 2026). MailSlurp has been tracked since 2026-02-28.
In the same window HubSpot, Klaviyo and Mailchimp also changed their Software Development & Testing pricing pages. Those moves are listed further down, and the Pulse Agent can compare them side by side.
- Growth · Limit+1900%10200/month
- Pro, Growth · FeatureAdded
BeforeNo 'Email warm-up' feature
After'Email warm-up' feature
- Compare · PackagingChanged
Beforeheaders-only
Afterfully populated per-country SMS/MMS/rental rates
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| Growth | Limit | 10 | 200/month | +1900% |
| Pro, Growth | Feature | No 'Email warm-up' feature | 'Email warm-up' feature | Added |
| Compare | Packaging | headers-only | fully populated per-country SMS/MMS/rental rates | Changed |
Values as written on MailSlurp's public pricing page in the two captures Pulse compared; where the page states no number, the cells give the wording before and after.
Evidence
The two captures Pulse comparedFull-page captures of MailSlurp's pricing page (mailslurp.com) from Sep 14, 2026 and Sep 21, 2026; the change is marked near the top of the page, where growth limit reads 10 and then 200/month.
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The two full-page captures with this change marked up are free with an account.
MailSlurp, the last 90 days
Full history- Oct 12, 2026improvedMailSlurp adds inbox placement testing to all plans, gates warmup to top tiers
- Oct 5, 2026packagingMailSlurp adds $0.01/credit email warmup usage rate + 1 more change
- Sep 21, 2026packagingMailSlurp adds AI token disclosures and email warm-up as usage caps quietly c... · this change
- Sep 7, 2026improvedMailSlurp kills paid trials for Pro and Team, points users to Free plan
- Aug 31, 2026improvedMailSlurp: Free & Phone number capacity increased
Across Software Development & Testing in the same window
All Software Development & Testing changesQuestions about this change
Did MailSlurp raise prices in September 2026?
No list-price increase was recorded between Sep 14, 2026 and Sep 21, 2026. The change Pulse detected was a packaging change: limit increase, feature removed, package change.
What changed on MailSlurp's pricing page between Sep 14, 2026 and Sep 21, 2026?
Growth limit: 10 → 200/month (+1900%); Pro, Growth feature: No 'Email warm-up' feature → 'Email warm-up' feature, added; Compare packaging: headers-only → fully populated per-country SMS/MMS/rental rates, changed. Pulse compared the captures it took on Sep 14, 2026 and Sep 21, 2026; the before/after table above lists each item as written on the page.
How often does MailSlurp change its pricing?
Pulse recorded 2 other pricing-page changes for MailSlurp in the 90 days before this one; the previous change was "MailSlurp kills paid trials for Pro and Team, points users to Free plan" on Sep 7, 2026; MailSlurp has been tracked since 2026-02-28.