Getting started with Yandex Cloud Postbox

Use this guide to create your address and send a verification email.

Getting startedGetting started

Sign up in Yandex Cloud and create a billing account:

1. Navigate to the management console and log in to Yandex Cloud or register a new account.
2. On the Yandex Cloud Billing page, make sure you have a billing account linked and it has the ACTIVE or TRIAL_ACTIVE status. If you do not have a billing account, create one and link a cloud to it.

If you have an active billing account, you can navigate to the cloud page to create or select a folder for your infrastructure to operate in.

Learn more about clouds and folders.

Create a service account and keysCreate a service account and keys

1. Create a service account named postbox-user and assign it the postbox.sender role.

2. Create a key for the service account:

   • To send an email using the AWS CLI, create a static access key. Save the ID and secret key to a secure location. You will not be able to view the secret key parameters again after you close the window.
   • To send an email via SMTP, create an API key. When creating an API key, set the scope for yc.postbox.send. Save the secret key you got in a secure location. You will not be able to view the secret key parameters again after you close the window.

3. Generate a key to create a DKIM signature:

   openssl genrsa -out privatekey.pem 2048
   

Create an addressCreate an address

Pass a domain rights checkPass a domain rights check

To send emails, confirm domain ownership. After creating an address, DKIM signature settings will be generated on its page. Specify them as the values of the resource record you need to add to your domain zone. You can add a record with your registrar or in Yandex Cloud DNS if you have delegated your domain.

Example of creating a resource record in Cloud DNS

Send a verification emailSend a verification email

You can send a test email using the AWS CLI or from your email client over SMTP.

AWS CLIAWS CLI

1. Install the AWS CLI.

2. Set up the AWS CLI:

   1. Launch the interactive profile setup:

      aws configure
      

   2. Specify the previously obtained key ID of the postbox-user service account:

      AWS Access Key ID [****************ver_]: <service_account_key_ID>
      

   3. Specify the previously obtained secret key of the postbox-user service account:

      AWS Secret Access Key [****************w5lb]: <service_account_secret_key>
      

   4. Specify the ru-central1 default region name:

      Default region name [ru-central1]: ru-central1
      

   5. Specify JSON as the default format for output data:

      Default output format [None]: json
      

3. Prepare two JSON files:

   • destination.json: File with a list of destination addresses:

     {
       "ToAddresses": ["test@example.com"]
     }
     

   • message.json: File with the subject and content of the email:

     {
       "Simple": {
         "Subject": {
           "Data": "Test message",
           "Charset": "UTF-8"
         },
         "Body": {
           "Text": {
             "Data": "Test message. Hello!",
             "Charset": "UTF-8"
           }
         }
       }
     }
     

4. Send an email using the AWS CLI:

   aws sesv2 send-email \
     --from-email-address mail@example.com \
     --destination file://destination.json \
     --content file://message.json \
     --endpoint-url https://postbox.cloud.yandex.net
   

5. Check the mailbox specified in destination.json for the email.

SMTPSMTP

1. In the SMTP server settings of your email client, specify the following parameters:

   	Email client supports STARTTLS	Email client supports SMTPS instead of STARTTLS
   Server name	postbox.cloud.yandex.net
   Port	587	465
   Username	API_KEY
   Password	Secret part of the created API key

2. Send an email using your email client and make sure the specified recipients receive it.

See alsoSee also

• Email delivery notifications
• Sending an email