Email Validator by LifeStep
Validate email syntax and MX, detect disposable/role addresses, suggest typo fixes
No keyCORSHTTPS
Custom Temp Mail
The FreeCustom.Email API allows users to instantly generate disposable email addresses without registration or ads. This service enables users to create inboxes for receiving emails, extracting OTPs, and managing messages efficiently.
Verified 4 days ago: 100% uptime
API key
Unconfirmed
HTTPS
Supported
Browser calls
No, needs a proxy
Status
Live · 98/100
What our checks found
- Health score
- 98/100
- Reliability
- 100%
- Average latency
- 1883ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for Custom Temp Mail. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# Authentication requirement is unconfirmed. Check the documentation before relying on this.
curl -s "https://www.freecustom.email/ENDPOINT" \
-H "Authorization: Bearer YOUR_TOKEN" \
-H "Accept: application/json"This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.
Where this listing comes from
Aggregated from one public source (freepublicapis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
Other Email APIs
See all 36 →Kickbox
Email verification API
No keyCORSHTTPS
mail.gw
10 Minute Mail
No keyCORSHTTPS
Best Temp Mail
Disposable inboxes for automated email testing, with OTP extraction
No keyHTTPS
Disify
Validate and detect disposable and temporary email addresses
No keyHTTPS
DropMail
GraphQL API for creating and managing ephemeral e-mail inboxes
No keyHTTPS
Custom Temp Mail — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is Custom Temp Mail free to use?
Custom Temp Mail is listed in our free catalogue, but it requires some form of authentication, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.
Does Custom Temp Mail need an API key?
Custom Temp Mail requires some form of authentication. Check the provider's documentation for which scheme it expects.
Can I call Custom Temp Mail from browser JavaScript?
Not directly. Custom Temp Mail did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.
Is Custom Temp Mail still working?
Yes, as of 2026-09-18. Our automated check reached Custom Temp Mail and recorded a 100% reliability score with a median response time of 1883 ms. We re-check on a schedule, and this page updates with the result.
Is Custom Temp Mail available over HTTPS?
Yes. Custom Temp Mail serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.