This article covers the SPF and DKIM authentication processes for MailerSend and how they are managed in Valimail. While only one of the two authentication methods is required for an email to pass DMARC, our recommendation is to configure both whenever possible.

Please note that you need to have access to the domain’s DNS records so you can complete the following steps.

1. Navigate to Domains in the left-hand navigation menu.

2. Click on Add domain.

3. Enter your domain name and click Add domain.

4. Next, you will see instructions for adding DNS records to your domain’s DNS page. If your provider is able to be identified by MailerSend, you will see specific instructions related to your provider, such as GoDaddy or IONOS. If not, you will see general instructions for adding DNS records.

Although each provider has their own format for accepting records, all platforms will provide the following options needed for MailerSend when adding new records:

You can click on each field value to automatically copy it.
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To add Custom DNS records for tracking or enable Inbound domain forwarding, toggle the following options ON.

5. To add these DNS records, you will need to log in to your domain registrar's website and locate the DNS settings for your domain.

You can also send the instructions clicking Share records. Doing so sends an email with instructions about how to set up the DNS records to the email addresses you provide.

6. After adding the records, toggle the option I have added DNS records and click Verify domain. Once the records have been propagated, your domain will be verified and ready to use.

NOTE: If you manage you domain in Valimail, you will need to add the DKIM key on your domain's configuration page in the Valimail platform.

You can also find the instructions on how to set up DKIM and SPF for MailerSend, here.

You can find more detailed information on how to add a DKIM key in Valimail, here:

Once you establish that MailerSend is an authorized sender for your domain, you will need to add the service in your Enabled Senders.

You will find more detailed information on how to add a service for your domain in Valimail, here:

Note: We encourage you to use the comment section for any useful information about your sending service, such as the name of the service owner, change request ticket numbers, etc.