On the Professional plan, you can send confirmation emails from your own custom domain – instead of the default confirmation@consumer-withdrawal.eu. This looks more consistent to your customers and reduces the chance of spam classification.

You have two options: a classic SMTP server or a Microsoft 365 integration via OAuth2. Both work – pick the one that fits your existing email infrastructure.

When this makes sense

• You want your customers to see your own domain as the sender of the confirmation email
• Your email provider gives you better tracking and logging for sent emails
• You already use the same domain for email marketing and want to consolidate sender reputation

Requirements

• You're on the Professional plan
• You have access to an SMTP server with sending permissions
• OR: You have a Microsoft 365 mailbox that can send emails
• Your domain has configured SPF and ideally DKIM records – otherwise emails often land in spam

Option A: Connect an SMTP server

1. In your Revoq admin, go to Settings → Email Settings.
2. In the Custom sender domain section, select SMTP.
3. Enter the connection details:

• Host (e.g. smtp.yourprovider.com)
• Port (typically 587 with STARTTLS or 465 with SSL)
• Encryption (TLS recommended)
• Username
• Password – many providers require an app-specific password rather than your regular login
• Sender email address (the address your customers see, e.g. withdrawals@yourshop.com)

4. Save.

Helpful links for common providers

If you're not sure where to find your provider's SMTP details or how to generate an app password, here are the official guides for the most common providers:

• Gmail / Google Workspace: Create an app password – app passwords are managed at myaccount.google.com/apppasswords. 2-step verification must be enabled.
• Strato: Use your email address with external clients – contains SMTP server, ports, and authentication details (German).
• IONOS: Server information for IMAP, POP3, and SMTP – all server addresses and ports at a glance (German).

Option B: Connect Microsoft 365 (OAuth2)

If your company uses Microsoft 365, OAuth2 is the easier path – no password management in Revoq, no app passwords needed.

1. In your Revoq admin, go to Settings → Email Settings.
2. In the Custom sender domain section, select Microsoft 365.
3. Click Sign in with Microsoft.
4. In the Microsoft login, sign in with the mailbox you want to send emails from.
5. Confirm the permission for Revoq.
6. You'll be redirected back to the app and see the connection as active.

Send and verify a test email

Before real customers use the new configuration, send yourself a test email:

1. In the email settings, you'll find a Send test button.
2. Enter a recipient address in merchant notifications (ideally your own).
3. Click Send test and verify the email arrives – with the correct sender, clean layout, and no spam marking.

What happens if sending fails?

If your SMTP server or Microsoft 365 can't send the email for any reason (server outage, expired OAuth token, etc.), Revoq automatically falls back to standard delivery. Your customers still receive the confirmation – just from the default sender confirmation@consumer-withdrawal.eu.

You'll be notified in the dashboard so you can restore the connection.

Troubleshooting

Authentication fails:
For SMTP, double-check username and password. Many providers require app passwords instead of regular logins.

Test email doesn't arrive:
Check spam folder and your domain's SPF/DKIM records. Tools like MXToolbox help with DNS diagnostics.

Microsoft 365 connects but email is rejected:
Check mailbox permissions in your Microsoft Admin Center, and verify that "Send As" is allowed for your sender address.

Token expires (Microsoft 365):
OAuth tokens are renewed automatically. If renewal fails, simply sign in again via the Microsoft login.

Related

• Set up email notifications for new withdrawals
• FAQ
• Go-Live Checklist

Updated on: 10/06/2026