user61756, the only half-workaround we have identified is to utilize both the FROM and REPLY-TO fields within email campaigns. someone@mybusiness1.com might be added to the FROM field and then someone@mybusiness2.com might be added to the REPLY-TO field, should someone reply.   Constant Contact currently only allows 1 domain name (......@OneDomainName.com), per account, to be authenticated. They also now require that only authenticated domain names can be utilized within the FROM email address of campaigns. The result is that we can now only send FROM 1 custom domain name. The REPLY-TO field doesn't have these restrictions and so we can note any email address we wish to and have customers reply-to a more ideal address, if needed.   If you visit the "Account emails" section you can still add as many email addresses as you need and from multiple domain names. Only 1 domain name and all of its corresponding email addresses will be considered authenticated and available for use within the FROM field. All other email addresses can still be added and used within the REPLY-TO field of campaigns sent.   https://app.constantcontact.com/pages/myaccount/settings/emails   We have multiple branded business units and each have their own uniquely branded email addresses. Currently we have 1 ideal email address added for everyone (for use in REPLY-TO) and we have 1 authenticated email address added for everyone (for use in FROM). The xyz@ part of each email address always matches while the domain name might differ. Our current workaround, short of moving our account away from Constant Contact. If using the above workaround be sure that all email addresses used point to a primary account. Some may be forwarding.   ... View more

FYI: This "Multi Domain DKIM Authentication" community string was first started in 2020. At that time authentication of custom domain names wasn't available at Constant Contact but was a requested, optional feature. Customers could still utilize multiple custom domain names within 1 account when sending emails.   In early 2024 Google and Yahoo started requiring email authentication. As a result Constant Contact required that all custom domain names be authenticated, to continue using them, but failed to accommodate for accounts which were utilizing more than 1 custom domain. Currently we are limited to authenticating only 1 custom domain per account and as such we are limited to use of 1 custom domain. "..@shared1.ccsend.com" can also be utilized but this is not good branding in most cases.    One option is to buy separate accounts to accommodate each custom domain name. This is impractical, time wasting and far more costly than alternative competing products where only 1 account is needed and paid for. While this "Multi Domain DKIM Authentication" string was first started in 2020, as of 2024 the issue is not a lack of DKIM Authentication but how accounts are now being restricted due to only 1 authentication being possible. ... View more

Previously we could send email FROM any email address once verified that we own the email address in question. Currently we are required to authenticate our core domain name to be able to continue to send FROM. If we have multiple core domain names we currently can't continue to send FROM all of these domain names. As a feature upgrade, authentication for multiple domain names (FROM sending) within each account should be enabled ASAP. Thank you! ... View more