QuestionPro- Email Servers - Mail Messages marked as SPAM / Guaranteed Delivery

We cannot guarantee that your company's mail servers will accept emails from us (for your survey) - Different companies have different algorithms and policies as to what is considered as SPAM and what is not. PLEASE CONTACT YOUR INTERNAL IT STAFF and ask them about their ANTI-SPAM policies.

Can I give my IT staff some technical information so that surveys that I send are not blocked?

Yes. Following is the necessary information for our domain QuestionPro.com

Outbound Mail ServersIP Address
mail.questionpro.com72.5.52.234
mail1.questionpro.com72.5.52.236
mail2.questionpro.com70.42.174.90
eu-mail1.questionpro.com46.249.61.91
ca-mail1.questionpro.com74.217.129.19
mail1.surveyanalytics.com70.42.174.180
mail2.surveyanalytics.com63.251.2.130
mail3.surveyanalytics.com70.42.174.188
Data CenterSubnet MaskRange
United States72.5.52.192/2672.5.52.193 -> 72.5.52.254
United States70.42.174.0/2470.42.174.1 -> 70.42.174.252
United States63.251.2.130/2563.251.2.132 -> 63.251.2.254
Europe46.249.61.0/2446.249.61.1 -> 46.249.61.252
Canada74.217.129.0/2474.217.129.1 -> 74.217.129.252

What about emails sent to major ISP's - How can I be guaranteed that emails will not be blocked by them?

No provider can guarantee email delivery. ISP's have different rules about SPAM detection based on content, subject and how many of their users are reporting emails as SPAM.

The best way to make sure that your specific survey invitation is not blocked as SPAM is to pre-test it by sending an email invitation to different free email addresses from hotmail, yahoo, gmail, etc.

While QuestionPro makes every effort to make sure that our IP Addresses are whitelisted and not blocked, we cannot guarantee delivery of emails. It is the survey administrator’s responsibility to make sure that emails do not get blocked by the recipient’s mail servers.

How to include QuestionPro SPF record on client side?

An SPF record is a type of Domain Name Service (DNS) record that identifies which mail servers are permitted to send email on behalf of your domain. The purpose of an SPF record is to prevent spammers from sending messages with forged From addresses at your domain.

Note: The SPF record that needs to be added is provided below: include:_spf.questionpro.com or else you can use following method:
ipv4:72.5.52.192/26 ipv4:70.42.174.0/24 ipv4:63.251.2.130/25 ipv4:46.249.61.0/24 ipv4:74.217.129.0/24