[jonifico]

Amazing work, congratulations! I'm gonna give it a try, we have been using Phplist so far (we send like 500k daily emails).

Are you guys using returnpath' senderscore or a similar certification to send that amount of emails ?

[knadh]

Thank you. We aren't. We just have dedicated IPs and proper DKIM and SPF records.

[samat]

Could you please elaborate on how to use returnpath to deliver large quantities of emails? Isn’t it solely informational service?

[theIV]

Return Path has a certification service that certain providers use as a signal to the “legitimacy” of the sender (don’t know if that was the best phrasing...).

https://returnpath.com/solutions/email-deliverability-optimi...