Recommendations for sending emails
1&1 is committed to providing a trustworthy and secure service to its users. For this reason, careful evaluation of incoming emails and protection against unsolicited emails are top priority.
The following notes apply to the operators of delivering services:
Respect the recipient's wish not to receive unsolicited mail
If a 1&1 user can demonstrate that you have failed to stop sending undesired email despite a request to the contrary, we reserve the right to block your service permanently.
Observe legal requirements
Observe the legal requirements applicable in your own country. For the USA this is the Can-Spam Act for example. Note that senders of mass mails can be held responsible if they fail to seek the consent of the recipient.
Observe the recommendations of the MAAWG working group
The Messaging Anti-Abuse Working Group (MAAWG) cooperates with large and important internet service providers to regularly draft a guide to sending emails. Use this guide as the basis for your work.
RFC conformity
Emails and communications with our servers must comply with the current RFC defined standards.
No receipt from dial-up address ranges
Emails must be sent directly to our Mail Exchange server from dial-up networks. Emails from users with dynamic IP addresses must be sent via smart hosts or SMTP relay servers protected against misuse.
Reverse DNS entry
A Reverse DNS entry (FQDN) must exist for the delivering server.
Correct HELO
You must send a meaningful and plausible HELO/EHLO in the sense of RFC 5321.
Sender Policy Framework
On request from a customer, we will investigate your SPF records. The sender address for forwarded emails must thus be aliased as an SRS.
Hardening of servers against misuse
The delivering server must be protected against unauthorised access.
RBL lists
We check various, established RBL lists. Please make sure that your server is not on one of these lists. You can check this information at DNSBL.info.
The following rules apply for senders of mass mails:
Sanitisation of the address lists
The sender must immediately remove email addresses from their dispatch lists if hard bounces occur at these addresses. If you attempt to deliver mail to multiple unknown (or disabled) 1& accounts, you will be temporarily blocked. We reserve the right to block you permanently in this case.
Legal information requirement
You are only permitted to send emails to recipients from whom you have received permission to deliver mass mails, e.g. newsletters. We recommend the use of a double opt-in process.
The ordering party or the contractual partner of the sender must be clearly identifiable for the recipient.
We recommend including non-electronic contact information for the sender including the telephone number and the physical address in requested mass mails.
Opt-out
The recipient must be given a fast and simple opt-out option for receipt of the mass mail (newsletter, advertising etc.).
Each email should contain a note to this effect; however, an opt-out option can be provided in the form of a valid reply address.
Whitelisting by external providers
As a sender of mass mails we recommend that you participate in the Certified Senders Alliance
. More information is available here.
