SMTP Relay Mail Server Integration

QuestionPro SMTP Relay lets you send survey invitation emails using your existing email service. SMTP relay uses your corporate SMTP server settings for sending emails and providing authenticity and thereby avoiding being caught as SPAM/Junk mail.

How to set up mail server integration?

Go To:

  • Login » Surveys » User Profile » My Account » Email Settings
  • Survey Software Help Image
  • Under SMTP Relay, click on Update.
  • Enter the SMTP credentials in the SMTP Relay section and then click on "Save Changes" button to save the changes.
  • Survey Software Help Image

Is there any limit on sending email invitation from SMTP?

Service providers usually sets a limit on SMTP for sending emails. Please check with your service providers for any such limits on daily or monthly basis.

For Example: Gmail has a SMTP limit of 500 emails per day. If you want to send 1000 email invitations, you need to divide your list in 2 (500 each) and then send one list per day.

Does my IT have to do anything?

It depends - but very likely yes. The way the SMTP Relay system works is that, your servers will be the initial receivers of the email - even if the email is not destined to your domain. This makes sure that your servers are the initial point of contact as they email out to the wider world.

Your IT staff may want to know the IP address from which we'll be sending emails (to be allowed to relay.) - Please click here to get a list of the IP addresses for our outbound servers.

How is this different than just whitelisting IP addresses in our mail servers?

By using the SMTP Relay, all emails that you send are routed through your servers. For example, if you are sending email invitations to gmail, hotmail etc. - and you would want to route all the emails through your servers - for corporate accountability, standards, archiving etc. - the SMTP Relay functionality will make sure this happens.

A list of SMTP servers:

Server Relay Port Number Authentication
Gmail 465 SSL
Gmail 587 TLS
Office 365 587 TLS
Outlook 587 TLS
Yahoo Mail 465 SSL
Hotmail 465 SSL
SendGrid 25, 2525 and 587 TLS
SendGrid 465 SSL
Mandrill 25, 2525 and 587 TLS
Mandrill 465 SSL


This feature/tools described here are available with the following license(s) :

Corporate Edition and above- Buy Now - $75/Month

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