TempMailGrab vs Guerrilla Mail
Guerrilla Mail has been running since the mid-2000s and does one notable thing TempMailGrab does not: it can send mail as well as receive it. Which service fits depends almost entirely on whether you need that.
The one feature that decides it
Guerrilla Mail lets you send email from your temporary address, not just receive. Almost no disposable service does this, and it is the reason to pick Guerrilla Mail when you need it — replying to a seller, sending a one-off message without exposing a real address.
TempMailGrab is receive-only, deliberately. An inbox that cannot send cannot be used to send spam or to impersonate anyone from a throwaway address, which keeps the domain's reputation intact and its mail deliverable. That is a trade: capability given up for reliability.
Side by side
| Feature | TempMailGrab | Guerrilla Mail |
|---|---|---|
| Receive mail | Yes | Yes |
| Send mail | No — receive only | Yes |
| Retention | 24 hours | About 1 hour |
| OTP auto-extraction | Yes | No |
| Delivery | Real-time over WebSocket | Polling |
| Choose your own address | No — random | Yes |
| API | Free, with OTP parsing | Yes |
| Interface languages | 60 | Limited |
When TempMailGrab is the better Guerrilla Mail alternative
The retention gap is the practical one. About an hour is enough for an instant confirmation email and not enough for anything that arrives late — a delayed verification, a next-morning trial reminder, a two-step sign-up you get pulled away from. A 24-hour window covers those without you having to restart the flow.
If you are collecting verification codes, the automatic OTP extraction removes the open-the-email step, and it is the same parsing the free API exposes for test suites. If you read the site in a language other than English, TempMailGrab is fully translated into 60.
When Guerrilla Mail is the right choice
- You need to send. This is decisive. If the task involves replying from the throwaway address, TempMailGrab cannot do it and Guerrilla Mail can.
- You want to choose the address. Guerrilla Mail lets you set the local part, which is useful when you need a memorable or specific address.
- A very short window is what you want. If the point is that the mail disappears fast, an hour beats a day.
As with every service in this category, both domains appear on disposable-email blocklists and some sites will reject either.
Try TempMailGrab free → · Read the temporary email guide
Compared as of 2026 against publicly documented behaviour. Guerrilla Mail may change its features at any time — check its own site for current details.
Frequently Asked Questions
Can TempMailGrab send email like Guerrilla Mail?
No. TempMailGrab is receive-only by design — an inbox that cannot send cannot be used for spam or impersonation, which keeps the domain deliverable. If you need to send from a temporary address, Guerrilla Mail is the better fit.
How long does Guerrilla Mail keep messages?
Roughly an hour. That covers an instant confirmation but not a delayed verification or a sign-up you return to later. TempMailGrab keeps an inbox for 24 hours.
What is the best Guerrilla Mail alternative?
If you only receive mail, a service with a longer window and automatic OTP extraction — TempMailGrab holds mail for 24 hours and pulls out codes for you. If you need to send from the address, there is no real substitute for Guerrilla Mail.
Can I choose my own address on TempMailGrab?
No. Addresses are randomly generated, which is what stops anyone else from guessing and reading your inbox. Guerrilla Mail lets you set the local part, at the cost of that same guessability.