How to set custom envelope/return path address and DKIM ?

If your recipients use Outlook, Hotmail (and other Microsoft webmail services), or Gmail, they may see an indication in the email that it was sent by Pepipost on your behalf instead of just your 'from' name and address.

Following steps which includes SPF and signing of DKIM helps to remove the 'on behalf of' or 'via' information. Even if someone displayes via inspite of setting all, then it will be your domain only and not Pepipost:

Step 1: Create a sub-domain


Example: If your main domain is, then create a sub-domain and follow the next steps.

Step 2: Point the CNAME record of [SUB-DOMAIN] to

Step 3: Add/Update the TXT record of pepipost._domainkey.[SUB-DOMAIN]  to value

"k=rsa\; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDLMMExLiGRqzJkNdNIjUnLX7JL0wjbwwENDoXgJIBisIsrofLPetZM401dioNU8k/Qp6nIyi5oioyZh+1jDXoCPFa4nLGRNj3Nz785N7b76aTtHmy2wTgR2LFS/Yw5/iyzhyrWsIyINyyHs77EoCwSOQjJfhFxb6SmifLN51IIvwIDAQAB"

(The above is the BIND DNS server syntax, and other DNS servers may not require the ‘ to escape the “;”)

Click here to download all of the above steps.

Once you are done with the above steps, please send an email to with your username and sub-domain. Our delivery team will enable the custom envelope/return path address and DKIM for your account.

Generally this process takes 24-48 hrs of time frame, but in case you didn't receive a reply from us within the said timeframe, then you can directly reach us over live chat.