How to Prevent Your Constant Contact Emails From Being Blocked
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 the Constant Contact telephone support team directly so they can take steps to resolve the issue. Constant Contact’s ISP Relations Team has experience working with these large providers and will work to resolve the problem on your behalf. They can be reached at 781.472.8103
For smaller ISPs and domains Constant Contact have created the following letters to help you communicate with your subscribers and their ISPs. Once the letters have been handed off, Constant Contact’s 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. While working with Constant Contact on this issue, 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 (YOUR SUBSCRIBER NAME HERE…),
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 (YOUR NAME HERE) 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,
(YOUR NAME HERE)
Letter Your Subscriber Sends to their ISP
To: ISP Customer Support
Subject: Remove Constant Contact Block
Hello. My name is (YOUR NAME HERE) and I have been a customer of your services since (LIST YOUR DURATION OF SERVICE HERE). 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
208.75.123.103 coi103.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
208.75.123.245 mail245.nutshellmail.com
208.75.123.250 ccm37.constantcontact.com
Please contact me when this problem has been resolved.
Sincerely,
(YOUR NAME HERE)
