Mailosaur review

Mailosaur gives product and QA teams test inboxes and phone numbers for checking email and SMS flows. Teams can use it to test messages and journeys such as sign-ups, authentication, and password resets, rather than routing tests through personal inboxes or creating dummy accounts. It also offers email previews across clients and devices, including light and dark modes, plus accessibility checks.

The pricing page lists a 14-day free trial but no free plan. Personal starts at $20 per month and Core at $50 per month, both at annual-billing rates. Mailosaur says annual billing saves 20%; monthly-billing prices are not published. SMS testing and authentication and email previews are paid add-ons, not listed as included in those plan summaries. That distinction matters: the base price covers email testing, while teams needing SMS or rendering previews should budget for extra charges.

Mailosaur’s clearest strength is covering the email test workflow in one product: secure inboxes, message checks, automation integrations, and previews. The product description covers content, layout, links, and end-to-end flows, so teams can test more than whether an email arrived. Dedicated numbers extend testing to OTPs, MFA codes, and transactional SMS. Accessibility checks are also available, though the pricing page lists them on Core rather than Personal.

The plan caps are reasonably explicit:

• Personal is listed at $20 per month with annual billing. It includes one user (supports up to three), one inbox with unlimited email addresses, 15,000 inbound emails per month with a 500-per-day cap, compatibility testing, and an API for test automation.
• Core is listed at $50 per month with annual billing. It includes five seats, multiple inboxes with unlimited email addresses, 75,000 inbound emails per month with a 2,500-per-day cap, accessibility testing, and POP3 and IMAP connectivity.

For teams replacing scattered test accounts or building message-driven QA, those inbox and automation features are the practical draw. Mailosaur also supports automated sign-up and password-reset workflows, according to the product information.

The headline plan prices do not tell the whole cost story. Mailosaur lists Personal at $20 and Core at $50 per month only at annual-billing rates; it says annual billing saves 20%, but monthly-billing prices are not published. There is no free plan, only a 14-day trial, so ongoing use means paying after evaluation.

SMS testing and authentication start at $37.50 per month, while email previews start at $25 per month. Those add-ons can materially raise the bill, especially for teams that need both SMS coverage and client/device rendering previews. The published pricing does not state what usage or preview limits apply to those add-ons, so confirm the details before choosing a plan.

The entry plan also has concrete ceilings: one inbox, 15,000 inbound emails per month, and 500 per day. Core raises those limits to multiple inboxes, 75,000 per month, and 2,500 per day, but costs more. In a Reddit thread about testing application email with Playwright, commenters suggested options including self-hosted Mailpit and AWS SES/S3 with Lambda. Those may suit teams that cannot use a hosted service, but the thread does not establish that they are equivalent replacements.

Mailosaur has no free plan; the pricing page lists a 14-day trial. Personal is $20 per month and Core is $50 per month, both at annual-billing rates. That is a $30 monthly-rate jump from Personal to Core, or 2.5 times the price. The page says annual billing saves 20%, but does not publish monthly-billing prices, so the cost of paying month to month is unclear.

Personal includes one inbox, unlimited email addresses, 15,000 inbound emails per month (500 per day), compatibility testing and API access. It supports up to three users. Core includes five seats, multiple inboxes, 75,000 inbound emails per month (2,500 per day), accessibility testing, POP3 and IMAP. Enterprise pricing is not published; it adds custom users and inboxes, permissions, SSO and account support.

Budget separately for add-ons: SMS testing starts at $37.50 per month, and email previews start at $25 per month. Those costs can change the comparison if you need both.

Switching in means wiring Mailosaur’s test inboxes into the email flows and automation your team wants to check. The published plan details list API access for test automation, and the product supports testing sign-ups, authentication and password resets. Expect to review test addresses, credentials and workflow configuration; the exact migration steps are not published in the material we have.

Before switching away, check which tests depend on Mailosaur inboxes, email previews, accessibility checks or SMS numbers, then decide what replaces each one. The published sources do not say whether messages or test data can be exported, so confirm that with Mailosaur before cancelling. We also don’t have Reddit posts or comments in the published material for this review, so we can’t responsibly say what users tend to cite when leaving. Treat data export, retention and any replacement for SMS or previews as questions to settle before you move.