Pmta approved list

Get insights into pmta approved list and how it can enhance your overall email marketing strategy.

PowerMTA is a highly used email delivery software in the business and marketing industries. It delivers high volumes of emails efficiently, yet for maximum effectiveness, it should be used with compatible or approved services and configurations. We shall discuss what the PMTA approved list is, why it matters, and how it can optimize your email marketing campaigns in this article.

PMTA approved list largely means the ESPs and ISPs, with some additional infrastructure settings that are perfectly compliant with PowerMTA so that email can get sent via a better delivery route. PowerMTA actually doesn’t have an “approved list.” However, the term is commonly used while referring to the best practice or recommended providers/settings along with PowerMTA mainly for:

With an approved PMTA list of providers and configurations, your email infrastructure will be optimized for high-volume sending, thus having minimal chances of your emails ending up in spam folders.

1. IP Addresses and IP Warming Providers

It takes a proper reliable IP address with proper IP warming to maintain such great deliverability rates. Sending high volumes of emails calls for gradual warming up of new IP addresses. This helps result in an excellent reputation by sender among ISPs.

Dedicated IPs: Dedicated IPs help manage the email reputation and are very much recommended to be adopted by businesses that send high volumes of emails.

Reputable Providers: Dedicated IPs are offered by providers such as SendGrid, Amazon SES, or SparkPost, which works fine with PowerMTA.

IP Rotation: If many IPs are available, utilizing IP rotation can further send volumes and avoid getting IPs blacklisted.

2. Domain Authentication (SPF, DKIM, and DMARC)

Authentication of a domain via SPF, DKIM, and DMARC records is necessary for establishing trust with the ISPs and preventing emails from ISPs being marked as spam.

SPF: It is a way of listing the IPs to which your domain has licensed to send emails on its name. Configure your SPF to include all the IPs at which PowerMTA comes into play.

DKIM: This provides a digitally signed message for each that proves the domain from the sender’s side. Sending with DKIM using PowerMTA can help an emailer build a safe sender reputation.

DMARC (Domain-based Message Authentication, Reporting & Conformance): Assists you in enforcing email policies and protects your domain from spoofs.

For using PowerMTA with a separate SMTP relay service in order to provide more redundancy and support, here are a few good providers which are capable of handling a huge volume of sending: