SAPO email checker: does this sapo.pt mailbox exist?
In short: Asks SAPO Mail's own mail server whether a sapo.pt mailbox exists, without sending anything, after syntax, domain, disposable and role checks. Limit: A valid result shows SAPO accepted the mailbox today, not that anyone reads it.
To check if a sapo.pt address exists, enter it here. The checker asks SAPO's mail server about the mailbox at RCPT TO, then disconnects before any message is sent. It rejected a made-up address with 550 5.1.1 The account does not exist (and the Portuguese "A conta do destinatario nao existe") on 8 November 2026, so a missing mailbox comes back invalid.
Price: this tool is free. Checking a whole email list is from $9/mo, and the first 100 checks are free with Google, no card. Check your list free nowSee pricing
Tuned for sapo.pt. Five checks a minute, no account needed. Nothing is sent to the address — we ask its mail server whether the mailbox exists, then disconnect.
Sample result
[email protected] doesn't exist: SAPO's server rejected it.
- [email protected]
- Reason
- Mailbox not found
- Mailbox check
- SMTP, nothing sent
What this means for you
Invalid means remove it; a real mailbox would come back valid.
- Asks SAPO's server at RCPT TO
- Catch-all test with a random address first
- Catches typo domains with no mail server
- Flags disposable and role addresses
- SAPO
- sapo.pt
- Portugal
By SimpleVerifier Team · Last updated
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How do I check a whole list of SAPO addresses?
- Export the list as a CSV or copy the email column; SAPO rows and every other domain can go in together.
- Upload or paste it at /verify. The first 100 email checks are free with a Google sign-in, no card.
- For every list after that, Pro includes unlimited email verification. Fair use: the first 100,000 checks a month at full speed, then slower, never cut off.
How do I check a SAPO email address?
- Type or paste one address, such as
[email protected]. - Press Check. The tool checks the syntax and domain, asks SAPO's server about a random address that can't exist, then about yours, and disconnects before anything is sent.
- Read the verdict: valid means SAPO accepted the mailbox and rejected the made-up one, invalid means it said the account doesn't exist, risky means the check didn't get a clear answer.
- If it comes back risky, check again later: with SAPO that is usually a cut-short check, not a bad address.
Example
- You enter
- One address:
[email protected]. - You get
- Valid when SAPO accepts the mailbox after rejecting a random address; invalid ("Mailbox not found") when it answers
550 5.1.1 The account does not exist; risky only when the check gets no clear answer. - Limits
- Five checks a minute per IP address, one address at a time, no account needed.
How do I check if a sapo.pt address exists without emailing it?
Ask SAPO's mail server instead of the mailbox. On 8 November 2026 sapo.pt published one MX host, mx.sapo.pt. That day a made-up sapo.pt address got 550 5.1.1 The account does not exist A conta do destinatario nao existe (#5.1.1) at RCPT TO through this checker.
So a single SAPO mailbox can be confirmed: a rejection comes back invalid ("Mailbox not found") and an acceptance valid. This is one check on one day; we have no earlier observation for this domain.
Why do sapo.pt addresses stop receiving mail?
SAPO's help page on hibernated accounts says mail accounts not accessed for more than 90 days can no longer receive email, and all their content may be deleted under the terms of use. Logging in again, by webmail or a mail program, reactivates the account.
SAPO's page on suspended accounts adds that accounts are suspended mainly for sending spam or being compromised, usually for 2 to 3 days. A sapo.pt contact who hasn't logged in for three months may not get your mail even if the address exists, so watch bounces from Portuguese lists and re-check them, for example with the bulk verifier.
What can this checker confirm at SAPO?
Each row is something the check runs on a SAPO address, and the result you can get from it.
| Check | Can we confirm it? | Result when it fails |
|---|---|---|
| Syntax (the address is written correctly) | Yes | Invalid |
| Domain and mail server (MX) | Yes | Invalid, with a typo suggestion where one fits |
| Disposable or role address | Yes | Invalid (disposable) or risky (role) |
| The mailbox exists | Yes: SAPO answers at RCPT TO (550 5.1.1 The account does not exist) | Invalid, "Mailbox not found" |
| A temporary reply or timeout | No answer to read | Risky, worth checking again later |
| Someone reads the inbox | No checker can | Use opens, replies or a small first send |
Our checking server offered a made-up address and disconnected without sending, through this checker on 8 November 2026; earlier checks are dated in the text.
Who uses this tool, and for what?
- Portuguese shops and newsletters
- Drop deleted sapo.pt mailboxes before a campaign.
- Support teams
- Catch a mistyped address, or a typo domain like sapo.ptt, before you reply.
- Lead buyers
- Confirm a handful of Portuguese webmail contacts before paying for or importing a list.
What can’t this tool tell you?
- A valid result shows SAPO accepted the mailbox today, not that anyone reads it.
- A temporary reply or a refused connection comes back risky, not invalid.
- SAPO doesn't publish how its servers answer mailbox checks, or how hibernated accounts answer; the handling here is from one check on 8 November 2026, which can change.
- One address at a time, five a minute.
Common questions
- How do I check if a sapo.pt email address is valid?
- Enter it here. The checker confirms the syntax and mail server, then asks SAPO's server about the mailbox without sending. SAPO rejected a made-up address on 8 November 2026, so a missing mailbox comes back invalid.
- What happens to an inactive SAPO Mail account?
- SAPO's help says accounts not accessed for more than 90 days are hibernated: they can't receive email and their content may be deleted. Logging in again reactivates them.
- What does A conta do destinatario nao existe mean?
- It is Portuguese for "the recipient's account does not exist". SAPO sends it with 550 5.1.1. Treat it as a hard bounce and remove the address.
- Why was a SAPO account suspended?
- SAPO's help says suspensions are mainly for sending spam or a compromised account, and usually last 2 to 3 days.
- Is this checker free?
- Yes, five checks a minute with no account. For a whole list, sign in with Google for 100 free email checks, no card, or use a monthly plan.
Sources
That was one address. Most people have a list.
The free checker does five addresses a minute, one at a time — fine for spot-checking, useless for a CSV of 40,000.
- Upload a CSV up to 100,000 rows
- Valid, risky and invalid exported as separate files
- Repeat checks free for 14 days, no new connections
Plans from $9 a month, cancel anytime, no contract. Sign in with Google and your first 100 email checks are free, no card. The free tools stay free either way.