What should I do if my contact's ISP or spam filter is blocking Constant Contact mail?



How to work with ISPs who are blocking your emails

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What should I do if my contact's ISP or spam filter is blocking Constant Contact mail?

If you believe your email campaigns are being blocked by an ISP or mail server as opposed to being filtered, we suggest you start by reaching out to your subscribers (contacts) or their ISP (Internet Service Provider) directly.

If numerous subscribers from the same large domain (such as Gmail, Hotmail or Yahoo) or ISP (Comcast, Road Runner or Verizon) are appearing in the "Blocked?" bounce category in your account, please contact our telephone support team directly so we can take steps to resolve the issue.  Our ISP Relations Team has experience working with these large providers and will work to resolve the problem on your behalf.

For smaller ISPs and domains we have created the following letters to help you communicate with your subscribers and their ISPs.  Once the letters have been handed off, our ISP Relations Team will work with the appropriate individuals to resolve the issue.  The ISP Relations Team is available (via the ops@constantcontact.com address included in the letter) should the ISP/Domain require follow-up information such as mail logs.  We have found this approach usually yields much faster results since the admins are hearing from their own users who want the mail.
 


Important: When you copy and paste these letters into an email sent via your standard email and not through Constant Contact, please be sure to replace the XXX placeholder with more specific and appropriate information before sending it to either the contact or ISP.



Letter You Send to Your Subscriber

To: Contact
Subject: Contact Your ISP

Hello XXX,

I am emailing to alert you that your ISP is blocking the newsletters/promotions/announcements you have subscribed to receive. I know that you would like to receive these valuable communications, so I ask that you send the attached letter to your ISP's customer support department. Please be sure to replace in the XXXX areas below.

As you may know, Constant Contact powers the email communications I send. When you receive a response from your ISP, please forward the response email to the following address: ops@constantcontact.com. The Operations Department at Constant Contact will follow-up with your ISP once they receive your email.

I apologize for any inconvenience this may cause you.

Sincerely,
XXX


Letter Your Subscriber Sends to their ISP

To: ISP Customer Support
Subject: Remove Constant Contact Block

Hello. My name is XXXX and I have been a customer of your services since XXXX. I understand that you employ filters and/or blacklists to protect customers like myself from unsolicited email; however, this has made it impossible for me to receive newsletters, announcements, and promotions that I have requested. I value these communications and would like to receive them using this email address.

The sender of these emails uses an email marketing service called Constant Contact. Constant Contact is not an open relay and has strict anti-spam policies in place. Because your filters block emails from Constant Contact I am unable to receive these communications.

I ask that you please help me determine why these emails are being blocked. For further information about Constant Contact or to request more information from them such as log files, the Operations team can be reached at - 781.472.8103 or ops@constantcontact.com.

Mail from Constant Contact can be found by the following characteristics for whitelisting:

"Envelope from:" domains:

@in.constantcontact.com
@in.confirmedcc.com

Sending IPs:

All mail from Constant Contact is sent from:

IP Range: 208.75.123.0 - 208.75.123.255
CIDR: 208.75.123.0/24
Network/Netmask: 208.75.123.0 255.255.255.0

Specific IPs sending from this range:

 

208.75.123.1          coi001.confirmedcc.com
208.75.123.2          coi002.confirmedcc.com
208.75.123.3          coi003.confirmedcc.com
208.75.123.4          coi004.confirmedcc.com
208.75.123.103     coi103.confirmedcc.com
208.75.123.104     coi104.confirmedcc.com

208.75.123.130     ccm22.constantcontact.com
208.75.123.131     ccm23.constantcontact.com
208.75.123.132     ccm24.constantcontact.com
208.75.123.133     ccm25.constantcontact.com
208.75.123.134     ccm134.constantcontact.com
208.75.123.135     ccm135.constantcontact.com
208.75.123.161     ccm26.constantcontact.com
208.75.123.162     ccm27.constantcontact.com
208.75.123.163     ccm38.constantcontact.com
208.75.123.164     ccm39.constantcontact.com
208.75.123.165     ccm165.constantcontact.com
208.75.123.166     ccm166.constantcontact.com
208.75.123.167     ccm167.constantcontact.com
208.75.123.168     ccm168.constantcontact.com
208.75.123.169     ccm169.constantcontact.com
208.75.123.170     ccm170.constantcontact.com
208.75.123.171     ccm171.constantcontact.com
208.75.123.172     ccm172.constantcontact.com
208.75.123.173     ccm173.constantcontact.com
208.75.123.174     ccm174.constantcontact.com
208.75.123.175     ccm175.constantcontact.com
208.75.123.176     ccm176.constantcontact.com
208.75.123.177     ccm177.constantcontact.com
208.75.123.178     ccm178.constantcontact.com
208.75.123.179     ccm179.constantcontact.com
208.75.123.180     ccm180.constantcontact.com
208.75.123.181     ccm181.constantcontact.com
208.75.123.182     ccm182.constantcontact.com
208.75.123.183     ccm183.constantcontact.com
208.75.123.184     ccm184.constantcontact.com
208.75.123.185     ccm185.constantcontact.com
208.75.123.186     ccm186.constantcontact.com
208.75.123.193     ccm33.constantcontact.com
208.75.123.194     ccm34.constantcontact.com
208.75.123.195     ccm35.constantcontact.com
208.75.123.196     ccm36.constantcontact.com
208.75.123.197     ccm197.constantcontact.com
208.75.123.198     ccm198.constantcontact.com
208.75.123.200     ccm200.constantcontact.com
208.75.123.201     ccm201.constantcontact.com
208.75.123.202     ccm202.constantcontact.com
208.75.123.225     ccm29.constantcontact.com
208.75.123.226     ccm30.constantcontact.com
208.75.123.227     ccm31.constantcontact.com
208.75.123.228     ccm32.constantcontact.com
208.75.123.229     ccm229.constantcontact.com
208.75.123.230     ccm230.constantcontact.com
208.75.123.231     ccm231.constantcontact.com
208.75.123.232     ccm232.constantcontact.com
208.75.123.233     ccm233.constantcontact.com
208.75.123.234     ccm234.constantcontact.com
208.75.123.235     ccm235.constantcontact.com
208.75.123.236     ccm236.constantcontact.com
208.75.123.250     ccm37.constantcontact.com


Please contact me when this problem has been resolved.

Sincerely,

XXXXXX

Want to get some hands on training to boost your Email Marketing skills? Attend one of our Bootcamp workshops in your area.
 

 


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