Important Note About Microsoft Email Support in Alsona
At this time, Alsona only supports personal Microsoft email accounts.
We do not currently support Microsoft Enterprise or Business email accounts, as these require Microsoft application verification, which is still in progress. We are actively working toward this verification and will update our documentation once Enterprise Microsoft accounts are supported.
If you are using a Microsoft Business or Enterprise account, the recommended workaround is to use a subdomain connected to Gmail, which is also considered best practice for outbound and automated email.
Why Using a Subdomain Is Best Practice (Even If Microsoft Were Supported)
Regardless of email provider, experienced outbound teams almost always use a subdomain instead of their main domain.
Using a subdomain allows you to:
Protect the reputation of your primary domain
Isolate outbound activity from internal and customer communication
Control deliverability, warm-up, and sending limits independently
Reduce risk if an inbox or domain encounters issues
For these reasons, setting up a subdomain is recommended even outside of Microsoft limitations.
Recommended Setup for Microsoft Users
If your primary email is on Microsoft 365 (Outlook), the recommended configuration is:
Main domain (example:
alsona.com)Remains on Microsoft 365
Used for internal and customer communication
Subdomain (example:
mail.alsona.com)Connected to Google Workspace (Gmail)
Used for outbound email and automation
Connected directly to Alsona
This setup keeps systems fully separate and avoids any Microsoft Enterprise restrictions.
How This Works
Email routing is controlled at the DNS level.
You can route your main domain to Microsoft and your subdomain to Google at the same time without conflict.
Alsona then connects to the Gmail inbox on the subdomain.
Step-by-Step: Setting Up a Microsoft Subdomain on Gmail
1. Choose a Subdomain
Common options include:
mail.yourdomain.comm.yourdomain.come.yourdomain.comemail.yourdomain.com
The subdomain is created in DNS, not inside Microsoft 365.
2. Add the Subdomain to Google Workspace
In Google Admin:
Go to Domains
Add a Secondary domain
Enter your subdomain (for example,
mail.alsona.com)
Google will provide a TXT record to verify ownership.
3. Point Subdomain MX Records to Google
In your DNS provider, add Google’s MX records only for the subdomain.
Do not modify the MX records for your main domain.
This ensures:
@alsona.comstays on Microsoft@mail.alsona.comroutes through Gmail
4. Configure SPF for the Subdomain
Add an SPF record that authorizes Google to send email:
v=spf1 include:_spf.google.com ~all
This record should apply only to the subdomain.
5. Enable DKIM (Required)
In Google Admin:
Generate a DKIM key for the subdomain
Add the provided TXT record to DNS
Enable DKIM signing
DKIM is required for proper email authentication and deliverability.
6. Add a DMARC Record (Recommended)
Start with a monitoring policy:
v=DMARC1; p=none; rua=mailto:dmarc@your-subdomain.yourdomain.com
This can be tightened later once sending is established.
Connecting the Gmail Inbox to Alsona
Once your Gmail inbox is live on the subdomain:
Log in to Alsona
Go to Email Accounts / Inbox Settings
Select Gmail
Authenticate the inbox
Assign it to your campaign or sender seat
Your Microsoft email remains unchanged and does not need to be connected.
Important Things to Avoid
Do not change the MX records for your main domain
Do not mix Microsoft and Google email services on the same subdomain
Do not skip inbox warm-up (we suggest Instantly for 3-6 weeks)
Do not send outbound email from your root domain
If you need help with DNS records, warm-up, or inbox setup, contact Alsona support.