Telenegar Mail Test Tool

The Telenegar Mail Test Tool measures how trustworthy a real e-mail looks to the receiving mail servers, and gives it a deliverability score out of 10. You get a temporary address, send an e-mail to it from the server, application or mailbox you want to test, and a report appears within seconds.

Unlike Mail Check, which reads a domain's DNS records without sending anything, Mail Test examines an e-mail that actually arrived. That lets it measure things that only exist on a real message: whether SPF passed for the server that really sent it, whether its DKIM signature verified, and how the sending server identifies itself.

It helps system administrators, developers and e-mail engineers find out why mail lands in the spam folder, and confirm that a new mail server, newsletter service or application is set up correctly before it goes live.

# **Sign in.** The tool uses credits, so an account is required.
# **Create the address.** Click **Create test address**. A temporary address such as ''t-d4gr5ing-tniu25-tonuwmh3ov@mailtest.telenegar.ir'' is shown. It is valid for **60 minutes** and accepts **one message**.
# **Send an e-mail to it.** Use the server, application or mailbox you want to test, with a realistic subject and text. Very short or empty messages are judged more harshly than real mail.
# **Keep the page open.** When the message arrives the report is shown automatically. If you reload the page while the address is still valid, the test continues.

<note important> Send the test from the same path your real e-mail takes (your application, your newsletter service, your company mail server). If you send it from a personal mailbox such as Gmail, the result describes Gmail's servers, not yours. </note>

The score is out of 10 and is split between the checks like this:

Every check that is not a full pass explains the problem and suggests a fix.

Sometimes a check cannot be made, for example because of a temporary DNS problem, or because one blacklist does not answer our server. Such a check is shown as Not checked and is left out of the score instead of counting against you. For blacklists, the result states which lists were actually asked; the verdict “not listed” only covers those.

• Cost: a fixed number of credits per test, shown before you start. Credits are taken only when your message arrives and the report is shown. If you never send the e-mail, the address expires, or the analysis fails, nothing is charged.
• Low balance: if your balance drops below the price between creating the address and the message arriving, the report is kept and shown as soon as you have enough credits and press Check again.
• Your e-mail: the text and attachments of the message are deleted from the server as soon as the report is created. Only the report (sender address, subject, sending IP and the results) is kept in your account for 7 days.
• Limits: at most 3 open test addresses and 10 new tests per hour per account.

Run a test from the exact system that sends the problem mail. The report shows whether SPF, DKIM and DMARC pass for that real message, which is usually where the cause is. See Email Deliverability Guide.

Before sending to customers, verify that the server has a correct PTR record, a HELO name that matches its IP, working TLS, and that its IP is not on a blacklist.

Confirm that the service signs with your domain (a valid DKIM signature that matches the From domain) rather than its own, otherwise DMARC will not count it.

After changing DNS records, send a new test. Each test uses a new address, so results are never mixed with earlier ones.

• Telenegar Mail Check Tool — Check a domain's SPF, DKIM and DMARC records without sending an e-mail.
• Telenegar DNS Check Tool — Query raw DNS records (A, MX, TXT, PTR) and verify global propagation.
• Email Deliverability Guide — Best practices for maintaining sender reputation and inbox placement.
• SPF | DKIM | DMARC — Core e-mail authentication configuration guides.
• SMTP 550 / 5.7.1 Bounce Errors — Understanding rejected e-mail.