How to configure Sender domain?


Sender domain is the domain from which emails are sent. This is the address that comes after @ in the sender's email address.

  1. To add your sender domain, go to Project Settings → Sender domains page and click on ➕.
  1. Select the protocol between http or https.
  2. Enter the address of your domain and click Create.
  1. Then you will be redirected to Sender domain details page.
  1. You need to copy the settings from this page and paste them in the settings of your domain (for security reasons, these settings are generated by us).


SPF and DKIM settings are mandatory.

Domain will obtain the verified status if SPF and DKIM records are verified.
DMARK and FBL settings are optional, but we recommend to add them as well.


If you use SPF not only for Sendios system, then you should combine the entries into one.

Two separate records will conflict and prevent verification.

  1. Then the status will be changed to Verified.


Please note

Due to certain specifics of the domain settings application, the verification of records may take up to 24 hours. In some cases, when your records are blocked from being read by external services, we will not be able to verify them. In such cases, we recommend you to consult with your CSM.