Lettermint ✉️🇪🇺

🔗 lettermint.co/changelog/e...

𝗘𝗺𝗮𝗶𝗹 𝘀𝘁𝗮𝘁𝗶𝘀𝘁𝗶𝗰𝘀 𝗻𝗼𝘄 𝗮𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 𝘃𝗶𝗮 𝘁𝗵𝗲 𝗦𝘁𝗮𝘁𝘀 𝗔𝗣𝗜 📊

Retrieve email statistics directly via the API. Track sent, delivered, bounces, opens, clicks and more.

Per day or as a total. Per project or team-wide.

Read the full changelog
↓

Receive a weekly overview in your inbox with Weekly Reports Automatically receive a weekly email report with your sending statistics, bounces, open rates and more. Always up to date without having to log in.

🔗 lettermint.co/changelog/w...

Weekly report showing email performance metrics: 8,231 sent, 8,226 delivered with details on bounces and spam complaints.

𝗪𝗲𝗲𝗸𝗹𝘆 𝗥𝗲𝗽𝗼𝗿𝘁𝘀 𝗻𝗼𝘄 𝗮𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 📬

9:00 Monday morning. A summary of your email performance lands in your inbox. Sent, delivered, bounced, open rates, click rates and more.

Enable it per team and stay informed without logging in.

Read the full changelog
↓

Why are my emails going to spam? Causes and solutions Your emails keep landing in the spam folder, but you're not sure why. Learn the most common causes and what you can do to reach the inbox again.

From authentication to content to sender reputation. Here's our full guide:

lettermint.co/knowledge-b...

Email inbox showing a spam email labeled "Spam" and two other messages marked as "Policy Rejected," indicating email filtering issues.

𝗞𝗻𝗼𝘄𝗹𝗲𝗱𝗴𝗲 𝗧𝗵𝘂𝗿𝘀𝗱𝗮𝘆 📚

"Why are my emails going to spam?" It's one of the most common questions in email deliverability.

Could be a DNS record you forgot. Content that triggers spam filters. Or a blacklist you didn't know about.

We break down the 8 most common causes and how to fix each one
↓

Java SDK now available Send emails from your Java applications with our official Java SDK. Available on Maven Central, integrate via Maven or Gradle.

🔗 lettermint.co/changelog/j...

𝗝𝗮𝘃𝗮 𝗦𝗗𝗞 𝗻𝗼𝘄 𝗮𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 ☕

Send transactional and broadcast emails from your Java applications.

Available on Maven Central, integrate via Maven or Gradle.

Read the full changelog
↓

Learn what headers mean and how to view them in Gmail, Outlook, Apple Mail and more:
lettermint.co/knowledge-b...

𝗞𝗻𝗼𝘄𝗹𝗲𝗱𝗴𝗲 𝗧𝗵𝘂𝗿𝘀𝗱𝗮𝘆 📚

Every email contains more than just the visible text.

Behind the scenes, there's data called email headers. They show who sent the message, when it was sent, which servers handled it and whether authentication checks passed.

↓

What is the List-Unsubscribe header in newsletters and marketing emails? The List-Unsubscribe header lets recipients unsubscribe with one click. Learn how it works, why Gmail and Yahoo require it, and how to set it up.

🔗 lettermint.co/knowledge-b...

Gmail message from "Newsletter Company" showing an "External" label and a highlighted "Unsubscribe" link beside the sender.

𝗞𝗻𝗼𝘄𝗹𝗲𝗱𝗴𝗲 𝗧𝗵𝘂𝗿𝘀𝗱𝗮𝘆 📚

Ever noticed that "Unsubscribe" button next to the sender in Gmail? That's the List-Unsubscribe header.

Since June 2024, Gmail and Yahoo require it for newsletters and marketing emails. No header = spam folder. The good news? Lettermint adds it automatically.

↓

Track email performance with open tracking and click tracking Gain insight into email performance with email tracking. View open rates and click rates with open tracking and click tracking. Privacy-first and GDPR-compliant.

🔗 lettermint.co/changelog/e...

Email delivery timeline showing a message to user@example.com with statuses: Delivered (15m), Opened (5m), Clicked (4m).

𝗘𝗺𝗮𝗶𝗹 𝗧𝗿𝗮𝗰𝗸𝗶𝗻𝗴 𝗻𝗼𝘄 𝗶𝗻 𝗯𝗲𝘁𝗮! 📊

Track open rates and click rates for your emails. Opt-in by default with a GDPR reminder when you enable it.

Configure per route, stay compliant.

Read the full changelog
↓

CAPTCHA, honeypots and IP blocking can keep most bots out.

We wrote a complete guide on protecting your forms:
lettermint.co/knowledgeba...

Three email notifications showing "Spam complaint" badges for no-reply@example.com, help@example.com, and contact@example.com, with timestamps.

𝗞𝗻𝗼𝘄𝗹𝗲𝗱𝗴𝗲 𝗧𝗵𝘂𝗿𝘀𝗱𝗮𝘆 📚

Bot signups are flooding platforms worldwide.

Bots use real people's email addresses to create accounts. Those people mark your welcome emails as spam. Your sender reputation drops, and suddenly your password resets land in spam too.

How to stop them?
↓

🔗 lettermint.co/changelog/p...

𝗦𝗽𝗲𝗻𝗱 𝗟𝗶𝗺𝗶𝘁𝘀 𝗻𝗼𝘄 𝗮𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲! 💰

New year's resolution: more control over expenses ✓

Set a spending limit and never pay more than your subscription price. Disable overage completely or set a custom budget.

Read the full changelog
↓

Lettermint turns 1 and we're just getting started 2025 was our first year. A look back at what we achieved and a glimpse of what 2026 will bring.

𝗟𝗲𝘁𝘁𝗲𝗿𝗺𝗶𝗻𝘁 𝘁𝘂𝗿𝗻𝘀 𝟭! 🎂

One year ago we signed the papers. Today we're sending millions of emails per month.

A look back at our first year. The highs, the lows, and what's next.

↓
lettermint.co/blog/letter...

Lettermint integrations and SDKs Easily integrate Lettermint with your applications. Explore our SDKs and integrations for seamless email delivery.

🔗 lettermint.co/integrations

Got some time off between the holidays? 🎄

We launched two new SDKs last week:
🐍 Python SDK
🐹 Go SDK

Finally time for that side project.

Both available now via pip and go get.

🔗 lettermint.co/changelog/g...

𝗚𝗼 𝗦𝗗𝗞 𝗻𝗼𝘄 𝗮𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲

Send transactional and broadcast emails from your Golang projects 🐹

No SMTP configuration needed, integrate directly via go get.

Read the full changelog
↓

Python SDK Now Available Integrate Lettermint into your Python applications with our new SDK and easily send emails from your Python code.

lettermint.co/changelog/p...

𝗣𝘆𝘁𝗵𝗼𝗻 𝗦𝗗𝗞 𝗻𝗼𝘄 𝗮𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲! 🐍

Send transactional emails from your Python apps with our new SDK. Supports sync and async requests, works with Python 3.9+. Perfect for Django, FastAPI and other Python projects.

Read the full changelog
↓

Avoid Spam Filters During Holidays: Gmail & Outlook Tips Gmail and Outlook spam filters get stricter during Black Friday, Cyber Monday, and holidays. Learn how to keep your emails in the inbox, not spam.

Don't let them end up in spam: lettermint.co/knowledge-b...

𝑯𝒐𝒍𝒊𝒅𝒂𝒚 𝒔𝒆𝒂𝒔𝒐𝒏 𝒊𝒔 𝒉𝒆𝒓𝒆 🎄

Spam filters from providers like Gmail & Outlook are still running at peak strictness. Your holiday campaigns need extra attention right now.

Don't let your emails end up in spam
↓

What is an MX record and how does receiving email work? An MX record tells mail servers where to deliver emails. Learn what an MX record is, how it works and why it matters for email delivery.

Read the full article and check your MX records:
lettermint.co/knowledge-b...

𝗞𝗻𝗼𝘄𝗹𝗲𝗱𝗴𝗲 𝗧𝗵𝘂𝗿𝘀𝗱𝗮𝘆 📚

MX records: the postal address of your inbox.

When someone sends you an email, MX records tell the sender's server exactly where to deliver it. No MX record? Your emails have nowhere to go.

Check your MX setup with our free tool!
↓

Outlook blocks SVG images in emails Microsoft blocks SVG images in Outlook since 2025. Find out why and which alternatives you can use in your emails.

Here's everything you need to know about #Outlook's SVG block and how to update your emails: lettermint.co/knowledge-b...