Built for B2B & quality-conscious publishers

A newsletter ad server built to manage direct sold ads

Trusted and used by leading B2B publishers.

Integrated add-on for your ESP

Add dynamic ads, updated in real-time, to your existing newsletters. Passendo’s ad server acts like Google’s Ad Manager, but in newsletters. Our tech integrates easily with any ESP with a simple, one-time tag.

Faster, smoother workflows

Give your AdOps team end-to-end ownership by separating the ad serving workflow from the newsletter content and creation.

Serve your ads in email newsletters, just like you do on the web:

  • confidently book newsletter ads in advance, knowing they will be delivered into the right newsletter, for the right person at the right time
  • reduce errors in an error-prone ad serving process
  • one-time setup – no need to hard-code native ads
  • integrate with your reporting platform via MySQL / API / FTP


“Passendo has allowed us to migrate and consolidate deliveryand reporting from 3 different systems leading to a simpler, more efficient operation.”

George Yedinak, Co-Founder, Executive Vice President

More engagement & revenue

Grow the reach and results of your existing newsletters.

  • Match your ads to the right audience by leveraging your first party data to improve targeting and engagement
  • Sell high-impact, true native ads, that are responsive to your newsletter design, and get 3-5X the clicks of display


“Passendo provides sales opportunities we haven't had before, giving our sales staff the extra edge. The interface is intuitive, quick, easy to learn and use.”

Alen Kurt, Head of Operations Global Divison

More efficient newsletter workflows

  • Keep all your newsletter ad serving in one place

  • Remove the need to hardcode native ads with a one time ad tag

  • Real-time data and reporting, in the UI, or exported to your preferred reporting solution

  • Separate workflows for AdOps and editors

  • Book newsletter ads day/weeks/months in advance

  • Reduce errors in an error-prone ad serving process

  • Serve ads in email newsletters just like on the web

Better newsletter commercialization

  • Deliver ads on email open, in real-time

  • Sell ads as sponsorship, CPM, CPC, CPA

  • Introduce high impact, native ad formats

  • Use your first party data to properly target audiences with ads

  • Leverage built-in ad serving optimization: frequency control for views, clicks, pacing and more

  • Use unsold inventory for strategic internal offers, tailored to the individual user

The original native ad server for newsletters

The original native ad server for newsletters. Use Passendo to automatically match your ads to the look and feel of your newsletter, with responsive designs for desktop and mobile. Our hard-code free native ads look great and are non-intrusive – the revenue won’t lie!

Dedicated to your long-term success

Your dedicated client success manager is there to ensure you get the results you need. From customised onboarding to bespoke setups, they will be there every step of the way.



“I want to let you know that I really appreciate how active you all are with customer service. Keep up the good work!.”

Victoria Flint, Data Analyst

Want to see it in action?

Join me as I take Beeler Tech CEO Rob Beeler in a platform walk-through

Play Video

Built for B2B & quality-conscious publishers

A newsletter ad server built to manage direct sold ads

Trusted and used by leading B2B publishers.

Integrated add-on for your ESP

Add dynamic ads, updated in real-time, to your existing newsletters. Passendo’s ad server acts like Google’s Ad Manager, but in newsletters. Our tech integrates easily with any ESP with a simple, one-time tag.

Faster, smoother workflows

Give your AdOps team end-to-end ownership by separating the ad serving workflow from the newsletter content and creation.

Serve your ads in email newsletters, just like you do on the web:

  • confidently book newsletter ads in advance, knowing they will be delivered into the right newsletter, for the right person at the right time
  • reduce errors in an error-prone ad serving process
  • one-time setup – no need to hard-code native ads
  • integrate with your reporting platform via MySQL / API / FTP


“Passendo has allowed us to migrate and consolidate deliveryand reporting from 3 different systems leading to a simpler, more efficient operation.”

George Yedinak, Co-Founder, Executive Vice President

More engagement & revenue

Grow the reach and results of your existing newsletters.

  • Match your ads to the right audience by leveraging your first party data to improve targeting and engagement
  • Sell high-impact, true native ads, that are responsive to your newsletter design, and get 3-5X the clicks of display


“Passendo provides sales opportunities we haven't had before, giving our sales staff the extra edge. The interface is intuitive, quick, easy to learn and use.”

Alen Kurt, Head of Operations Global Divison

More efficient newsletter workflows

  • Keep all your newsletter ad serving in one place

  • Remove the need to hardcode native ads with a one time ad tag

  • Real-time data and reporting, in the UI, or exported to your preferred reporting solution

  • Separate workflows for AdOps and editors

  • Book newsletter ads day/weeks/months in advance

  • Reduce errors in an error-prone ad serving process

  • Serve ads in email newsletters just like on the web

Better newsletter commercialization

  • Deliver ads on email open, in real-time

  • Sell ads as sponsorship, CPM, CPC, CPA

  • Introduce high impact, native ad formats

  • Use your first party data to properly target audiences with ads

  • Leverage built-in ad serving optimization: frequency control for views, clicks, pacing and more

  • Use unsold inventory for strategic internal offers, tailored to the individual user

The original native ad server for newsletters

The original native ad server for newsletters. Use Passendo to automatically match your ads to the look and feel of your newsletter, with responsive designs for desktop and mobile. Our hard-code free native ads look great and are non-intrusive – the revenue won’t lie!

Dedicated to your long-term success

Your dedicated client success manager is there to ensure you get the results you need. From customised onboarding to bespoke setups, they will be there every step of the way.



“I want to let you know that I really appreciate how active you all are with customer service. Keep up the good work!.”

Victoria Flint, Data Analyst

Want to see it in action?

Join me as I take Beeler Tech CEO Rob Beeler in a platform walk-through

Play Video