Back/MailSlurp

MailSlurp

Software Development & Testing mailslurp.com

Tallinn, Estonia-based email and SMS API platform founded 2018. Private. Operates in developer tools and messaging infrastructure. Serves engineering teams with APIs for testing, automating, and sending email and SMS.

Entry price

$19.17

Starter · /mo, billed annually

Plans tracked

6 add-ons

Pricing changes

Latest Wk 41 '26

Pricing model

Subscription + usage

Free tier available

Pricing Change History

5 changes

20265 changes

Oct 5, 2026

Packaging

Weekly

MailSlurp adds $0.01/credit email warmup usage rate + 1 more change

New 'Email warmup usage' metered rate added to Usage rates (Pro & Growth): $0.01/credit; controlled sends use 2 credits/recipient, provider checkpoint sends use 10 Growth plan's inbox placement testing now includes 'Premium placement providers included' alongside existing placement test allowance

View diff

Sep 21, 2026

Improvement

Weekly

MailSlurp adds AI token disclosures and email warm-up as usage caps quietly c...

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). '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.

View diff

Sep 7, 2026

Improvement

Weekly

MailSlurp kills paid trials for Pro and Team, points users to Free plan

Comparison table now lists the Free plan's Permanent inboxes cap as 50 (was 1), aligning the table with the Free plan card's existing 'Retain up to 50 inboxes' entitlement. Paid trial for Pro/Team removed; FAQ now directs users to evaluate on the Free plan before upgrading, and Subscribe checkout links switched from useTrial=1 to skipTrial=1.

View diff

Aug 31, 2026

Improvement

Weekly

MailSlurp: Free & Phone number capacity increased

Free plan inbox retention increased from 1 reusable inbox to up to 50 retained inboxes Phone numbers capacity increased in the plan comparison table: Pro from up to 3 to up to 5, Team from up to 10 to up to 35 (usage-based)

View diff

Mar 4, 2026

Packaging

Weekly

MailSlurp reveals $250 per-seat pricing for user add-on

User seats add-on now shows explicit price of $250.00 per seat; previously displayed only 'SEAT PRICING' label with no dollar amount

View diff