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Lettermint
@lettermint.co
19 followers 2 following 59 posts
Privacy-first transactional emails that deliver. Hosted in the EU 🇪🇺

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Posts Replies Media Videos
lettermint.co
Last chance to optimize your emails: lettermint.co/knowledge-b... #cybermonday
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.
lettermint.co
November 24, 2025 at 11:02 AM
lettermint.co
lettermint.co/knowledge-b...
What is SMTP and how does email sending work?
SMTP is the protocol behind email sending. Learn what SMTP is, how it works, which ports to use, and why proper configuration matters for deliverability.
lettermint.co
November 13, 2025 at 11:00 AM
lettermint.co
Start preparing now: lettermint.co/knowledge-b... #blackfriday
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.
lettermint.co
November 3, 2025 at 11:00 AM
lettermint.co
lettermint.co/knowledge-b...
What is DKIM2 and what's the difference with DKIM?
DKIM2 is the next version of DKIM with improved security and support for forwarded emails. Learn what DKIM2 is and why it matters for email authentication.
lettermint.co
October 30, 2025 at 10:56 AM
lettermint.co
lettermint.co/changelog/t...
Manage your account with the new Team API
Manage your entire Lettermint environment via the API. The Team API is now in preview and offers full control over domains, projects, emails and more.
lettermint.co
October 29, 2025 at 2:03 PM
lettermint.co
Learn when to use them: lettermint.co/knowledge-b...
Email subdomain: what it is and when to use one
Learn what an email subdomain is and why it's crucial for transactional emails. Including when to use subdomains and how to set them up.
lettermint.co
October 23, 2025 at 10:04 AM
lettermint.co
lettermint.co/features/in...
Inbound Emails - Receive and Process Emails via Webhooks
Receive inbound emails as structured JSON via webhooks. Process attachments, filter spam, and automate workflows with Lettermint's EU-based email service.
lettermint.co
October 14, 2025 at 11:51 AM
lettermint.co
lettermint.co/knowledge-b... #greylisting #EmailDeliverability
What is greylisting and why doesn't email arrive immediately?
Email not arriving right away? Greylisting is often the cause. Learn what this antispam technique is, how it works and how to prevent email delays.
lettermint.co
October 9, 2025 at 9:56 AM
lettermint.co
lettermint.co/changelog/i...
Add inline images to emails with Content-ID (CID)
Add inline images to emails with Content-ID, without external hosting. Perfect for logos, signatures and newsletters that remain always visible.
lettermint.co
October 8, 2025 at 10:00 AM
lettermint.co
Ready to become the boss of your domain's security?

Full DMARC guide here: lettermint.co/knowledge-b...

#DMARC #EmailDeliverability
What is DMARC?
If you send emails with your domain, you undoubtedly have a DMARC record in your DNS. But what is DMARC and what does it do? We'll explain it to you.
lettermint.co
October 2, 2025 at 10:00 AM
lettermint.co
Want to add that royal seal to your emails?

Complete DKIM setup guide:
lettermint.co/knowledge-b...

#DKIM #TransactionalEmail #EmailDeliverability
What is DKIM?
DKIM adds a digital signature to your emails. Discover how DKIM works, why it's important, and how to set it up with Lettermint.
lettermint.co
September 25, 2025 at 9:59 AM
lettermint.co
Read more about Spam Insights: lettermint.co/changelog/p...
Prevent emails from landing in spam with Spam Insights
Spam Insights gives you visibility into all your emails sent through Lettermint and shows you how to keep your messages out of the spam folder.
lettermint.co
September 22, 2025 at 10:04 AM
lettermint.co
Ready to create your domain's perfect guest list?

Full SPF guide here:
lettermint.co/knowledge-b...
#EmailDeliverability #TransactionalEmail
What is SPF?
SPF protects your domain against email abuse. Learn how to set up SPF, what the limits are, and how Lettermint cleverly handles SPF via Return-Path.
lettermint.co
September 18, 2025 at 10:04 AM