Mail.tm review
A free, API-first disposable email service with broad SDK coverage.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Mail.tm provides temporary email accounts for receiving messages without using a primary inbox. It is aimed at developers who need disposable addresses inside scripts, integrations, automated workflows, or application testing. Through its REST API, users can list available domains, choose an address while creating an account, authenticate with bearer tokens, and fetch, read, delete, and manage messages. Message resources also support downloadable attachments, giving the service broader handling than a basic receive-only mailbox endpoint.
The Free plan keeps the service straightforward: there is no signup requirement, no API key requirement, no paid tier, and a published limit of 8 queries per second per IP address. That structure suits prototypes, personal automation, and development workflows where predictable free access matters more than tiered capacity or commercial packaging. Server-Sent Events add real-time message notifications, which can reduce the need for repeated polling in applications that need to react when mail arrives. The API also supports custom address selection and domain listing, useful when a workflow needs to control how temporary accounts are created.
Platform fit is a notable strength. Mail.tm documents community-built SDKs for .NET, Dart, Go, Java, JavaScript, PHP, Python, Rust, and Swift, giving teams multiple starting points across common development stacks. The trade-off is that the product is API-focused rather than a general-purpose email interface: users looking for a visual inbox should choose a service built around browser-based mailbox access instead. Teams requiring more than 8 queries per second per IP address should also assess whether the documented request limit fits their workload. Mail.tm is a clear choice for developers who value free REST access and language coverage, but a narrower fit for nontechnical users or higher-throughput systems.
Mail.tm pros and cons
- Where it wins
- Free API access without signup or an API key
- Address selection, domains, messages, and attachments via API
- Community SDKs listed for nine programming languages
- Where it doesn't
- Access is API-only, with no visual inbox experience
- Requests are limited to 8 queries per second per IP address
- SDKs are community-built rather than presented as official libraries
Mail.tm fact sheet, pricing and score →
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