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TMailr
What it is
TMailr is a web and API service for temporary receiving inboxes, masked forwarding aliases, email deliverability checks, and application-email testing. Temporary inboxes use private links, receive messages only, and are deleted after expiry. Free inboxes last 60 minutes by default, can be extended to 24 hours, and hold up to 50 messages; Pro inboxes are effectively unlimited and remain active while subscribed. Masked aliases forward mail to a real mailbox, can be paused or blocked separately, and keep the forwarding address out of TMailr pages and API responses. Deliverability features include Gmail inbox tests, domain checks for MX, SPF, DMARC, MTA-STS, and TLS, plus header analysis, address checking, and a DMARC builder. Developers receive test and live API keys, JavaScript examples, polling, and signed webhooks for sandbox messages. Custom domains require TXT and MX records with daily ownership checks. TMailr sanitizes HTML, blocks remote images until requested, shows link destinations, scans attachments, and refuses executable files. Free is available; paid plans start at $2.99 a month.
For and against
For
- Temporary receive-only inboxes
- Masked aliases can be paused or blocked
- Checks MX, SPF, DMARC, MTA-STS, and TLS
- Provides API keys and signed webhooks
- Free plan available
Against
- Messages are not end-to-end encrypted
- Temporary inboxes are receive-only
- Free inboxes hold up to 50 messages
- No free trial
The verdict
TMailr combines disposable inboxes, forwarding aliases, deliverability diagnostics, and developer testing tools. Its free plan covers core use, while paid options extend inbox persistence, API capacity, or credits.
Who it suits
It suits people seeking temporary or masked email handling and senders diagnosing delivery problems. Developers can use its sandbox and API for application-email testing.
Plans and prices
Free
browser inboxes · masked aliases · 10 deliverability tests/month · free tools
Read 15 Oct 2026 · tmailr.com
Pro
inboxes never expire while subscribed · effectively unlimited messages · 25 custom domains
Read 15 Oct 2026 · tmailr.com
Pro
inboxes never expire while subscribed · effectively unlimited messages · 25 custom domains
Read 15 Oct 2026 · tmailr.com
API plan
300 credits/month · higher API limits · purchased credits continue after allowance
Read 15 Oct 2026 · tmailr.com
Pay as you go
120 credits in starting pack · credits never expire
Read 15 Oct 2026 · tmailr.com
Developer plan
300 credits/month; higher API limits; bought credits carry on after the monthly allowance
Read 8 Oct 2026 · tmailr.com
On the record
- Alias limitation
- Masked aliases receive and forward mail but TMailr does not send or reply on the user's behalf.tmailr.com · read 15 Oct 2026
- API
- The public API uses bearer keys and exposes sandbox creation and message retrieval under api.tmailr.io/v1.tmailr.com · read 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 · read 15 Oct 2026
- Attachment protection
- Attachments are virus-scanned, clean files are downloaded rather than rendered, and executable formats are refused.tmailr.com · read 15 Oct 2026
- Company description
- LinkedIn describes the maker simply as an information technology company.linkedin.com · read 15 Oct 2026
- Company followers
- The opened LinkedIn page displayed five followers for Bolrach Technologies Limited.linkedin.com · read 15 Oct 2026
- Company headquarters
- LinkedIn lists Bolrach Technologies Limited headquarters in Lagos, Lagos, Nigeria.linkedin.com · read 15 Oct 2026
- Company industry
- LinkedIn categorizes Bolrach Technologies Limited under Technology, Information and Media.linkedin.com · read 15 Oct 2026
- Company size
- LinkedIn lists the company size as 11–50 employees.linkedin.com · read 15 Oct 2026
- Company type
- LinkedIn identifies Bolrach Technologies Limited as privately held.linkedin.com · read 15 Oct 2026
- Company website
- LinkedIn lists bolrach.com as the maker's website.linkedin.com · read 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 · read 15 Oct 2026
- Custom domains
- Users can connect a domain by adding TXT and MX records; ownership is rechecked daily.tmailr.com · read 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 · read 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 · read 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 · read 8 Oct 2026
- Developer sandbox
- Sandboxes are catch-all test inboxes lasting one year and support plus-addresses for CI email testing.tmailr.com · read 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 · read 15 Oct 2026
