SMTP relay

Getting started with SMTP

2 articles

SMTP domains and configuration

7 articles

  • How to retrieve your SMTP credentials

    To send emails via the Cyberimpact SMTP Relay, your software needs login credentials: an SMTP username and password. This article explains how to create them and where to find them in your Cyberimpact account.

  • SMTP configuration: connection settings

    This article presents all the settings needed to connect your application or software to the Cyberimpact SMTP Relay. After reading it, you will know which settings to enter in your tool for sends to work correctly.

  • Permissions and access to the SMTP service

    Access to the Cyberimpact SMTP service varies depending on the user type and the plan status on your account. This article explains who can access what, and how to grant or restrict access for a team member.

  • SMTP domains and their authentication

    Before sending emails via the Cyberimpact SMTP Relay, you must configure and authenticate the domain you want to use as your sender address. This article explains what domain authentication is, why it is necessary, and how to configure it step by step.

  • How to test an SMTP integration

    Before sending emails to real recipients, it is recommended to run a few tests to make sure your application is properly connected and that emails are being sent and delivered correctly. This article walks you through the essential validation steps.

  • How to reset an SMTP password

    If you have lost your SMTP password or want to change it for security reasons, you need to reset it from your Cyberimpact account. This article explains how to proceed and what you need to do afterward.

  • Deleting an SMTP domain or user

    You can delete a sending domain or an SMTP user from the Domains tab of your account. This article explains how to proceed and what you need to know before deleting.

Mailing tracking

5 articles

  • SMTP Activity

    The Activity tab allows you to view the history of emails sent via the Cyberimpact SMTP Relay and track their delivery status, recipient by recipient. After reading this article, you will know how to navigate this section and interpret the information displayed.

  • SMTP statistics

    The SMTP section of your Cyberimpact account gives you access to various statistics to track the performance of your sends. This article explains where to find this information and how to interpret it.

  • Understanding email statuses

    When you view the Activity tab, each email sent via the SMTP Relay displays a status indicating its delivery state. This article explains what each status means and what you can do when an issue is detected.

  • How SMTP sending quotas work

    Each Cyberimpact SMTP plan includes a monthly sending quota — the maximum number of emails you can send during a billing period. This article explains how this quota is calculated, what happens when it is reached, and how to track your usage.

  • Using advanced search in SMTP activity

    The advanced search in the Activity tab allows you to filter your mailings by specific criteria to quickly find a particular message. This article explains how to use it effectively.

Issues and errors

5 articles

  • SMTP error codes: what they mean

    When an SMTP send fails, an error code is returned by the server to indicate the nature of the problem. This article explains what the most common error codes mean and how to respond in each case.

  • What file types can I send as an attachment?

    The Cyberimpact SMTP Relay accepts attachments in most common formats. This article presents the allowed file types and the rules to follow for your attachments to be processed correctly.

  • Why was my email rejected?

    When an email is refused by the SMTP service, it means the message was not accepted by the server and was not forwarded for delivery. This article presents the most common causes and the actions to take to resolve the issue.

  • Why is an email in "Deferred" status?

    The Deferred status indicates that a delivery attempt for the email failed temporarily. The message has not been permanently refused — the system can make new attempts. This article explains what this status means and what you can do.

  • What is the difference between a soft bounce and a hard bounce?

    When an email cannot be delivered after several attempts, a bounce is generated. There are two types: soft bounce and hard bounce. This article explains the difference between the two and what you can do in each case.

Billing

3 articles

  • How does SMTP service billing work?

    The Cyberimpact SMTP Relay service is offered as a monthly plan including a set number of emails per billing period. This article explains how to choose the right plan, how billing works, and where to find your billing information.

  • How to change your SMTP plan

    You can change your SMTP plan at any time from the Pricing tab in the SMTP section. This article explains how to proceed and in which situations it is useful to change plans.

  • How to cancel the SMTP relay service

    If you no longer need the SMTP Relay service, you can request cancellation at any time. This article explains how to proceed and what happens to your data and configuration.