TMailr

Free plan APIWeb

What TMailr is

TMailr combines receive-only temporary inboxes, masked forwarding aliases, email diagnostics, and a developer sandbox in web and API form. Temporary inboxes use private links, accept incoming mail only, and are deleted at expiry. On the free plan, they last 60 minutes by default, can be extended to 24 hours, and hold up to 50 messages. Pro inboxes are described as effectively unlimited and stay active while subscribed. Masked aliases forward messages to a real mailbox, can be paused or blocked individually, and hide the forwarding address from TMailr pages and API responses. Deliverability features include Gmail inbox tests, domain checks for MX, SPF, DMARC, MTA-STS, and TLS, plus header and address tools and a DMARC builder. Developers receive test and live API keys, JavaScript examples, polling, and signed webhooks. Custom domains require TXT and MX records. TMailr sanitizes HTML, blocks remote images until requested, shows link destinations, scans attachments, and refuses executable files. Plans start at $2.99/month.

Who it suits

TMailr suits people seeking email privacy, senders diagnosing delivery failures, and developers testing application email.

What it does well

Free temporary inboxes and browser tools
Masked aliases hide forwarding addresses
Includes Gmail and domain health tests
Offers API keys and signed webhooks
Scans attachments and blocks executables

What to know first

Temporary inboxes are receive-only
Free inboxes hold up to 50 messages
Messages are not end-to-end encrypted
Paid plans start at $2.99/month

Limits

Free inboxes hold up to 50 messages and expire after a default 60 minutes, though their lifetime can be extended to 24 hours. The free plan includes 10 deliverability tests per month. Pro inboxes do not expire while subscribed; the Developer plan includes 300 credits per month, with higher API limits.

Plans

Plan	Billed and limits	Price
Free	forever · browser inboxes · masked aliases · 10 deliverability tests/month · free tools	Free
Pay as you go	from $10 per credit pack · 120 credits in starting pack · credits never expire	$10, paid once
Pro	annual; save a third · inboxes never expire while subscribed · effectively unlimited messages · 25 custom domains	$24 a year
Pro	monthly · inboxes never expire while subscribed · effectively unlimited messages · 25 custom domains	$2.99 a month
Developer plan	$9 / month · 300 credits/month; higher API limits; bought credits carry on after the monthly allowance	$9 a month
API plan	monthly · 300 credits/month · higher API limits · purchased credits continue after allowance	$9 a month

As tmailr.com lists them, read 15 Oct 2026. The maker's own page has the final word.

Getting started

Visit tmailr.com and choose the free plan or a paid option.
Use the web service for inboxes, aliases, or email analysis tools.
For aliases on a custom domain, add the required TXT and MX records.
For application testing, use the API with test or live keys.
Use the Developer plan for 300 monthly credits and higher API limits, or buy a credit pack.

Verdict

TMailr covers disposable receiving, alias forwarding, deliverability checks, and email testing in one service. Its storage and safety controls are clearly described, but the maker warns against using disposable inboxes for genuinely sensitive information.

Questions

Is TMailr free?

Yes. Its free plan is listed as free and includes 10 deliverability tests per month and free in-browser tools.

What are the paid plans?

Pro is $2.99 a month, the Developer plan is $9 a month, and pay-as-you-go packs start at $10, paid once.

Can I send or reply from a masked alias?

No. TMailr does not support sending or replying from aliases; they forward mail to a real mailbox.

What platforms does it support?

TMailr lists web and API platforms.

Are messages end-to-end encrypted?

No. The maker says messages are not end-to-end encrypted and advises against using disposable inboxes for genuinely sensitive information.

Can I connect my own domain?

Yes. Add TXT and MX records for a domain you own; ownership is re-checked daily.

Facts from TMailr's own pages

Alias limitation: Masked aliases receive and forward mail but TMailr does not send or reply on the user's behalf. · tmailr.com, 15 Oct 2026
API: The public API uses bearer keys and exposes sandbox creation and message retrieval under api.tmailr.io/v1. · tmailr.com, 15 Oct 2026
API retention limits: A sandbox stores 500 messages; listings return the newest 100 and support cursor pagination up to 200 per request. · tmailr.com, 15 Oct 2026
Attachment protection: Attachments are virus-scanned, clean files are downloaded rather than rendered, and executable formats are refused. · tmailr.com, 15 Oct 2026
Company description: LinkedIn describes the maker simply as an information technology company. · linkedin.com, 15 Oct 2026
Company followers: The opened LinkedIn page displayed five followers for Bolrach Technologies Limited. · linkedin.com, 15 Oct 2026
Company headquarters: LinkedIn lists Bolrach Technologies Limited headquarters in Lagos, Lagos, Nigeria. · linkedin.com, 15 Oct 2026
Company industry: LinkedIn categorizes Bolrach Technologies Limited under Technology, Information and Media. · linkedin.com, 15 Oct 2026
Company size: LinkedIn lists the company size as 11–50 employees. · linkedin.com, 15 Oct 2026
Company type: LinkedIn identifies Bolrach Technologies Limited as privately held. · linkedin.com, 15 Oct 2026
Company website: LinkedIn lists bolrach.com as the maker's website. · linkedin.com, 15 Oct 2026
Content sanitization: Incoming HTML is sanitized, scripts/forms/frames are removed, remote images are blocked by default and links show their actual destinations. · tmailr.com, 15 Oct 2026
Custom domains: Users can connect a domain by adding TXT and MX records; ownership is rechecked daily. · tmailr.com, 15 Oct 2026
Deliverability test: The deliverability test reports observed SPF, DKIM, DMARC, alignment, TLS and reverse-DNS details from a received message. · tmailr.com, 15 Oct 2026
Deliverability tools: The service offers deliverability tests, Gmail inbox tests, domain health checks for MX, SPF, DMARC, MTA-STS and TLS, plus a header analyzer, address checker, and DMARC builder. · tmailr.com, 8 Oct 2026
Developer integrations: Developers can use an API with test and live keys, JavaScript SDK examples, polling, and signed webhooks for captured sandbox messages. · tmailr.com, 8 Oct 2026
Developer sandbox: Sandboxes are catch-all test inboxes lasting one year and support plus-addresses for CI email testing. · tmailr.com, 15 Oct 2026
Documentation: TMailr links a full API reference at docs.tmailr.com, while the developer page provides curl examples and webhook verification code. · tmailr.com, 15 Oct 2026
Domain health: The domain checker examines MX, SPF, DMARC, MTA-STS and TLS-RPT records. · tmailr.com, 15 Oct 2026
Email checker: The address checker identifies syntax problems, disposable domains, role mailboxes and Gmail dot or plus aliases. · tmailr.com, 15 Oct 2026
Email masking: Masked aliases forward mail to a real mailbox, can be paused or blocked individually, and do not reveal the forwarding address on TMailr pages or API responses. · tmailr.com, 8 Oct 2026
Gmail test: A separate test sends mail to a real Gmail mailbox and reports whether Gmail placed it in inbox or spam plus Gmail's authentication verdicts. · tmailr.com, 15 Oct 2026
Header analyzer: The header analyzer traces each Received hop, timing, TLS use and recorded SPF, DKIM and DMARC results without storing pasted headers. · tmailr.com, 15 Oct 2026
Inbox lifetime: Free inboxes last 60 minutes by default and can be extended to 24 hours. · tmailr.com, 15 Oct 2026

Where TMailr stands on Freedom251

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