I am testing the REST API and my post request is working (an email is successfully sent). However, I want to change the from address to something other than the default. I believe there is no way to do this through the api but it should be possible through the Azure portal here:

Home > Communication Services > click my service > Domains > click my domain > MailFrom addresses

It shows one MailFrom address (DoNotReply@domain). I want to add a new MailFrom address, for example "MyApp" <myapp@domain> The problem is the 'Add' button is greyed out. See screenshot below.

How can I add a new MailFrom address?

My custom domain is connected successfully to ACS and it is verified for everything (SPF, DKIM etc).

Thank you

I am testing the REST API and my post request is working (an email is successfully sent). However, I want to change the from address to something other than the default. I believe there is no way to do this through the api but it should be possible through the Azure portal here:

Home > Communication Services > click my service > Domains > click my domain > MailFrom addresses

It shows one MailFrom address (DoNotReply@domain). I want to add a new MailFrom address, for example "MyApp" <myapp@domain> The problem is the 'Add' button is greyed out. See screenshot below.

How can I add a new MailFrom address?

My custom domain is connected successfully to ACS and it is verified for everything (SPF, DKIM etc).

Thank you

• azure
• rest
• azure-communication-services

• do want to add custom doam withrest api – Sampath Commented yesterday

1 Answer 1

From this Microsoft Documentation, you can add sender addresses to the Email Communication Service. If you encounter issues while adding an email, refer to this Microsoft Q&A.

Using Azure CLI:

You can use the following Azure CLI command:

az communication email domain sender-username create --email-service-name "<EmailServiceName>" --resource-group "<resourceGroup>" --domain-name "contoso" --sender-username "contosoNewsAlerts" --username "contosoNewsAlerts" --subscription "<subscriptionId>"

Below is a sample Python code to interact with the Azure Communication Services Email API using REST for custom domain:

import requests
import json
from azure.identity import DefaultAzureCredential

SUBSCRIPTION_ID = "SUBSCRIPTION_ID"
RESOURCE_GROUP = "RESOURCE_GROUP"
EMAIL_SERVICE_NAME = "EMAIL_SERVICE_NAME"
API_VERSION = "2023-04-01"

BASE_URL = f"https://management.azure/subscriptions/{SUBSCRIPTION_ID}/resourceGroups/{RESOURCE_GROUP}/providers/Microsoft.Communication/emailServices/{EMAIL_SERVICE_NAME}"

def get_access_token():
    credential = DefaultAzureCredential()
    token = credential.get_token("https://management.azure/.default")
    return token.token

def list_domains():
    url = f"{BASE_URL}/domains?api-version={API_VERSION}"
    headers = {
        "Authorization": f"Bearer {get_access_token()}",
        "Content-Type": "application/json"
    }
    
    response = requests.get(url, headers=headers)
    if response.status_code == 200:
        domains = response.json()
        print("Available Domains:", json.dumps(domains, indent=2))
    else:
        print(f"Failed to list domains. Error: {response.text}")

def create_domain(domain_name):
    url = f"{BASE_URL}/domains/{domain_name}?api-version={API_VERSION}"
    headers = {
        "Authorization": f"Bearer {get_access_token()}",
        "Content-Type": "application/json"
    }
    payload = {
        "location": "Global",
        "properties": {
            "domainManagement": "CustomerManaged"
        }
    }
    
    response = requests.put(url, headers=headers, json=payload)
    if response.status_code in [200, 201]:
        print(f"Domain {domain_name} created successfully.")
    else:
        print(f"Failed to create domain. Error: {response.text}")
def list_sender_usernames(domain_name):
    url = f"{BASE_URL}/domains/{domain_name}/senderUsernames?api-version={API_VERSION}"
    headers = {
        "Authorization": f"Bearer {get_access_token()}",
        "Content-Type": "application/json"
    }
    
    response = requests.get(url, headers=headers)
    if response.status_code == 200:
        senders = response.json()
        print("Sender Usernames:", json.dumps(senders, indent=2))
    else:
        print(f"Failed to list sender usernames. Error: {response.text}")

def create_sender_username(domain_name, sender_username):
    url = f"{BASE_URL}/domains/{domain_name}/senderUsernames/{sender_username}?api-version={API_VERSION}"
    headers = {
        "Authorization": f"Bearer {get_access_token()}",
        "Content-Type": "application/json"
    }
    payload = {
        "properties": {
            "username": sender_username
        }
    }
    
    response = requests.put(url, headers=headers, json=payload)
    if response.status_code in [200, 201]:
        print(f"Sender Username {sender_username} created successfully.")
    else:
        print(f"Failed to create sender username. Error: {response.text}")

if __name__ == "__main__":
    print("Listing available domains...")
    list_domains()

    new_domain = "mynewdomain"
    print(f"Creating domain: {new_domain}")
    create_domain(new_domain)

    print(f"Listing sender usernames for domain {new_domain}")
    list_sender_usernames(new_domain)

    new_sender = "newSender"
    print(f"Creating sender username: {new_sender}")
    create_sender_username(new_domain, new_sender)

Output: