Maileroo

maileroo.com/pricingTransactional sender and SMTP relayemail/mailerooJSON compare report an error provider JSON

Free allowance: 3,000 outbound emails per month with no daily cap, 1,000 inbound emails per month, 2 custom sending domains, at USD 0 with no card
Verdict: caveatusable, with a named limit or an unprobed read path
Cost: free tier
Identity: emailno card, phone unknown
Binding limit: write-gatedTest Mode until a domain is added and an account verification form is approved, typically within 12 business hours: 100 emails in total to at most 7 unique recipients
Evidence: documented34 sources; a first-party page was read and the sentence quoted
Freshness: stale on 2026-12-03checked 2026-11-02 (live); stale on 2026-12-03

Free tier	3,000 outbound emails per month with no daily cap, 1,000 inbound emails per month, 2 custom sending domains, at USD 0 with no card unit requests; metered on request-count; Hourly sending limits apply to every account and on the free plan stay below the paid ones; mail sent beyond the hourly limit is dropped, not queued. The free plan gets no 12% overage buffer. A new account starts in Test Mode, 100 emails in total to at most 7 unique recipients, until a domain is added and an account verification form is approved. SMTP, the REST API, webhooks, inbound routing and 14 days of searchable logs are on the free plan, with 100 test emails a month. The next plan is USD 10 per month for 25,000 emails.
Price	none stated
Limits	request-rate 3,000 outbound emails per month; past the quota nothing more is sent until the month resets, and the free plan has no overage buffer source request-rate an hourly sending limit that grows over time and stays below the paid plans; mail beyond it is dropped. The free-plan figure is unverified: behind a sign-up source write-gated (binding) Test Mode until a domain is added and an account verification form is approved, typically within 12 business hours: 100 emails in total to at most 7 unique recipients source counts of things, not rates, so no vocabulary kind names them: 2 custom sending domains on the free plan, plus a sandbox domain that sends to up to 7 approved test recipients; 1,000 inbound emails per month.
Binding	write-gated Test Mode allows 100 emails in total to 7 recipients until a manual account verification, which checks for a website, is approved; after it, 3,000 a month with no daily cap and an unstated hourly limit.
Identity	email The signup form asks for a name, an email address and a password of at least 8 characters behind a Cloudflare Turnstile check, with no card. Registration and login through a VPN or proxy are refused. Leaving Test Mode needs a domain and an account verification form, reviewed typically within 12 business hours, that declares transactional or marketing use; the verification checks for a valid website associated with the account. Whether a phone number is asked is unverified: behind a sign-up. The compulsory DNS records are SPF (v=spf1 include:_spf.maileroo.com -all) and a DKIM TXT record; DMARC is optional.
Egress	not applicable: an outbound sender
Per-object cap	24 MB maximum message size over SMTP
Retention	14 days of searchable logs on the free plan (14 days)
Interface	rest SMTP at smtp.maileroo.com on port 465 with SSL or 587 and 2525 with STARTTLS, and the REST email API; the interface vocabulary has no smtp term
Tooling	any SMTP client, or the REST API and the vendor's SDKs; a one-click Cloudflare integration writes the DNS records
Composes with	3,000 a month with no daily cap, so a month can be spent in a burst within the hourly limit; pairs with its own inbound routing at 1,000 a month or with Cloudflare Email Routing for receiving.
Reliability	mail beyond the hourly limit is dropped rather than queued
Notes	The side-project page says sends past 3,000 wait until the quota resets, while the limits help page says mail beyond the limits is dropped rather than queued.
Evidence note	documented no message was sent; smtp.maileroo.com answered a 220 banner on ports 587 and 2525. The free-plan hourly limit and the questions of the verification form are behind a sign-up.
Parsed numbers	has-free-tier 1

Evidence 34

date	source	what it proved
2026-10-30	maileroo.com/pricing	the free plan sends 3,000 emails a month with no card
2026-10-30	maileroo.com/help/what-are-differences-between-free-paid-pla	the free plan is 3,000 outbound and 1,000 inbound a month, lower hourly caps and 2 custom domains
2026-10-30	maileroo.com/help/what-are-differences-between-free-paid-pla	the free-plan hourly limit grows over time and stays below the paid plans
2026-10-30	maileroo.com/for/side-projects	the free plan has no daily cap and stops sending at 3,000 a month
2026-10-30	maileroo.com/help/what-happens-if-i-go-over-my-emailing-limi	part of the text of Reliability, above
2026-10-30	maileroo.com/help/what-happens-if-i-go-over-my-emailing-limi	the free plan has no 12% overage buffer
2026-10-30	maileroo.com/help/what-happens-if-i-go-over-my-emailing-limi	mail past the limits is not queued
2026-10-30	maileroo.com/help/what-is-test-mode-how-can-i-send-emails-wi	part of the text of Binding, above
2026-10-30	maileroo.com/help/what-is-test-mode-how-can-i-send-emails-wi	Test Mode allows 7 unique recipients
2026-10-30	maileroo.com/help/what-is-test-mode-how-can-i-send-emails-wi	leaving Test Mode starts by adding a domain
2026-10-30	maileroo.com/help/what-is-test-mode-how-can-i-send-emails-wi	the account verification form is reviewed within about 12 business hours
2026-10-30	maileroo.com/for/side-projects	the verification form declares transactional or marketing use
2026-10-30	maileroo.com/help/why-does-maileroo-have-account-verificatio	account verification checks for a valid website
2026-10-30	maileroo.com/help/the-use-of-vpns-proxies-on-maileroo/	registration and login through a VPN or proxy are refused
2026-10-30	app.maileroo.com/account/sign-up	the signup form asks for name, email address and an 8-character password behind Turnstile, with no card field
2026-10-30	maileroo.com/help/what-dns-records-are-compulsory-create-so-	SPF and DKIM are the compulsory DNS records
2026-10-30	maileroo.com/help/what-dns-records-are-compulsory-create-so-	the SPF record value to publish
2026-10-30	maileroo.com/help/what-dns-records-are-compulsory-create-so-	DMARC is optional
2026-10-30	maileroo.com/for/side-projects	part of the text of Tooling, above
2026-10-30	maileroo.com/help/is-there-sandbox-test-environment-testing-	the sandbox domain sends to up to seven test recipients
2026-10-30	maileroo.com/docs/smtp-relay/server-configuration	SMTP accepts messages up to 24 MB
2026-10-30	maileroo.com/docs/smtp-relay/server-configuration	SMTP ports 587 and 2525 with STARTTLS, 465 with SSL
2026-10-30	maileroo.com/for/side-projects	the free plan has SMTP, the REST API, webhooks and 14 days of logs
2026-10-30	maileroo.com/for/side-projects	the next plan is 10 a month for 25,000 emails
2026-10-30	probe: `smtp.maileroo.com:587`	smtp.maileroo.com answered a 220 banner on ports 587 and 2525; no message was sent
2026-11-02	maileroo.com/help/what-is-test-mode-how-can-i-send-emails-wi	a new account starts in Test Mode with 100 emails in total to 7 unique recipients until a domain is added and the account verification form is approved, typically within 12 business hours
2026-11-02	maileroo.com/docs/smtp-relay/server-configuration	the SMTP relay server configuration page states a maximum message size of 24 MB
2026-11-02	maileroo.com/help/what-happens-if-i-go-over-my-emailing-limi	every new account is assigned an hourly sending limit that gradually increases with use
2026-11-02	maileroo.com/help/what-happens-if-i-go-over-my-emailing-limi	reputable senders may receive 2 to 3 burst tokens a day that allow temporary overage of up to 200% of the hourly limit
2026-11-02	maileroo.com/help/how-can-i-increase-my-hourly-limits	a higher hourly limit is requested through the Change Hourly Limit form in the dashboard, which the team reviews
2026-11-02	maileroo.com/help/what-is-test-mode-how-can-i-send-emails-wi	the account verification form is reached from Change Hourly Limit in the dashboard
2026-11-02	maileroo.com/email-policy	every user states the intended email use, transactional or marketing, during the verification process
2026-11-02	maileroo.com/help/what-kind-emails-can-i-send-maileroo	marketing email over SMTP must be declared in the verification form
2026-11-02	www.emailtooltester.com/en/blog/free-smtp-servers/	a third-party hands-on review reports an initial hourly limit of 30 emails, raised to 150 per hour on request

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stale after days	90