Exchange Connection Problems

How to Enable SMTP AUTH in Exchange Online for Snov.io

Maira Mehtab Sep 22, 2026 869 views

Question details

The user needs to enable authenticated client SMTP submission in Exchange Online to successfully connect their Microsoft account to Snov.io for email outreach.

Product: Microsoft Exchange Online
Device & OS: not provided
Scenario: Connecting a Microsoft 365 email account to the Snov.io platform.
Observed behavior: The user is unable to enable SMTP AUTH because they lack the required Microsoft 365 administrator permissions for the organization.

Before you start

Verify whether you are using a personal account or a corporate/school account. Business and educational Microsoft 365 environments restrict SMTP modifications to users with global administrative privileges.

Solution 1Recommended

Request Administrator Assistance to Enable SMTP AUTH

Since enabling SMTP AUTH in Exchange Online requires global admin rights, you must contact your organization's IT department, help desk, or the business owner who manages the subscription.

Microsoft disables basic authentication (including SMTP AUTH) by default for modern Exchange Online tenants to improve security. Only users with the Global Admin or Exchange Admin roles can turn it back on for specific mailboxes.

Identify your administrator

Find the contact information for your organization's Microsoft 365 administrator, IT help desk, or the person who initially purchased the business subscription.

Submit a configuration request

Ask your administrator to log into the Microsoft 365 admin center and navigate to 'Users' > 'Active users'.

Enable SMTP for your mailbox

Instruct the administrator to select your account, switch to the 'Mail' tab, click on 'Manage email apps', check the 'Authenticated SMTP' box, and save the changes.

For IT Administrators: Admins can also enable SMTP AUTH for specific mailboxes via Exchange Online PowerShell using the Set-CASMailbox cmdlet if they prefer command-line management over the Microsoft 365 admin center GUI.

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Frequently Asked Questions

Why is SMTP AUTH disabled by default in Exchange Online?

Microsoft disables SMTP AUTH in all new Microsoft 365 tenants to enhance security and protect against unauthorized access or brute-force attacks that target legacy basic authentication methods.

Can I enable SMTP AUTH without administrator rights?

No. Modifying authenticated client SMTP submission settings requires either the Exchange Administrator or Global Administrator role within the Microsoft 365 environment.

What should I do if my organization refuses to enable SMTP AUTH?

If your IT security policies restrict SMTP AUTH, you will need to ask your admin if they support modern authentication (OAuth 2.0) integrations or App Passwords, or consult with them to find an approved alternative method to connect Snov.io.

Is SMTP AUTH the same as IMAP or POP?

No. SMTP (Simple Mail Transfer Protocol) is specifically used for sending outbound emails, whereas IMAP and POP are protocols used for receiving incoming emails. Outreach tools like Snov.io require SMTP to send your campaigns.

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