---
title: "We're making our email speed public"
description: "Real-time insights into the speed of our infrastructure for delivering transactional emails from Europe."
url: "https://lettermint.co/blog/were-making-our-email-speed-public"
published: "2025-08-25"
last_updated: "2025-08-25"
---

# We're making our email speed public

> Real-time insights into the speed of our infrastructure for delivering transactional emails from Europe.

At the end of May we [introduced](https://lettermint.co/blog/welcome-future-transactional-mailing-europe)
Lettermint, the European provider for *[transactional emails](https://lettermint.co/features/transactional-emails)*.
With our focus on developer-friendly features, reliability and
privacy, we've been working hard over the past months on new features to
make Lettermint even more valuable for our customers. We update our
*[changelog](https://lettermint.co/changelog)* weekly with new features and
improvements.

With Lettermint's incredible growth and the volume of emails we
send, the quality of our service is crucial. Regardless of how many
emails we send or how many customers we serve, we want
emails to arrive lightning-fast in the recipient's inbox.

That's why we continuously monitor the speed of our European infrastructure and
the delivery speed of emails. Besides being proud of these
speeds with the volume of emails we send, we also want to be
transparent about these speeds. We've therefore created a public [Time to Inbox page](https://lettermint.co/time-to-inbox-tti),
where you can see the current speed of our emails.

Live Time to Inbox measurements: [https://lettermint.co/time-to-inbox-tti](https://lettermint.co/time-to-inbox-tti)

The *Time to Inbox* journey shows how quickly an email becomes visible in the
recipient's inbox. The complete journey consists of several steps:

1. **Send**: This is the moment when the email is sent to
our servers. We do this through our [API](https://lettermint.co/docs/)
which is also used by customers.
2. **Process**: Our systems process the email and prepare it for
delivery to the recipient. This includes validating the email and
applying any *meta*-data sent by the sender.
3. **Deliver**: The email is delivered to the recipient's
mail server. From this point, the email is officially delivered.
4. **Provider validation**: The recipient's mail server checks the email for
various factors, such as spam and authentication.
5. **Inbox arrival**: The email appears in the recipient's inbox,
ready to be read.

Each step in this process contributes to the total time it takes to get an
email into the inbox. While we have no control over part
of these steps (such as validation by the recipient's mail server),
we do everything we can to make the steps we can influence as fast
as possible. We deliver emails in a structure that is optimal for
mail providers. All completely through our **European
infrastructure**.

> Because when it comes to password resets and order confirmations, every second counts.

As you can read on the *Time to Inbox* page, we monitor these
speeds continuously. When there's a deviation, we take immediate action. Because when it
comes to password resets and order confirmations, every second counts.

When developing new features, we closely monitor these speeds.
We ensure that new features don't negatively impact the speed.

Take a look at our [Time to Inbox page](https://lettermint.co/time-to-inbox-tti) to see the
current speed of our emails. Here you'll also find more information
about how it works and the most frequently asked questions.