Sign up for the waitlist 👉 https://lettermint.co
In one week, your emails face the strictest spam filters of the year. Providers like Gmail & Outlook are already in holiday mode.
Make sure your campaigns are prepared
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In one week, your emails face the strictest spam filters of the year. Providers like Gmail & Outlook are already in holiday mode.
Make sure your campaigns are prepared
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SMTP: the backbone of email since 1982.
Every email you send travels through #SMTP servers, but how does it actually work? We explain the protocol that powers billions of emails daily.
Learn more
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SMTP: the backbone of email since 1982.
Every email you send travels through #SMTP servers, but how does it actually work? We explain the protocol that powers billions of emails daily.
Learn more
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During the holiday season, spam filters from providers like Gmail & Outlook become much stricter. Your campaigns could suddenly end up in spam.
Don't let your campaigns end up in spam
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During the holiday season, spam filters from providers like Gmail & Outlook become much stricter. Your campaigns could suddenly end up in spam.
Don't let your campaigns end up in spam
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DKIM2 is coming, and it fixes what DKIM can't.
After almost 20 years, DKIM gets a major security upgrade. DKIM2 is currently in development and brings better email security. We wrote an article explaining what DKIM2 is and how it differs from DKIM.
Learn more
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DKIM2 is coming, and it fixes what DKIM can't.
After almost 20 years, DKIM gets a major security upgrade. DKIM2 is currently in development and brings better email security. We wrote an article explaining what DKIM2 is and how it differs from DKIM.
Learn more
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Step up your integration game. Add domains, create projects, retrieve emails, and more via the new Team API. Perfect for integrating Lettermint into your existing workflows and systems.
Request access
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Step up your integration game. Add domains, create projects, retrieve emails, and more via the new Team API. Perfect for integrating Lettermint into your existing workflows and systems.
Request access
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Email subdomain: yes or no?
If your newsletter gets spam complaints, it can hurt your password resets too. Without subdomains, one bad campaign affects everything.
Email subdomains fix this:
- mail.yourdomain.com for transactional
- newsletter.yourdomain.com for marketing
Email subdomain: yes or no?
If your newsletter gets spam complaints, it can hurt your password resets too. Without subdomains, one bad campaign affects everything.
Email subdomains fix this:
- mail.yourdomain.com for transactional
- newsletter.yourdomain.com for marketing
Receive and process incoming emails as webhooks. Perfect for building support systems, contact forms, and email automation workflows.
Learn how inbound emails work!
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Receive and process incoming emails as webhooks. Perfect for building support systems, contact forms, and email automation workflows.
Learn how inbound emails work!
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Greylisting is like a waiting room for unknown emails. Mail servers make new senders wait and retry: real senders come back, spammers don't.
The problem? Your password reset email gets delayed.
The solution? We knows the wait times and retries smartly.
Learn more
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Greylisting is like a waiting room for unknown emails. Mail servers make new senders wait and retry: real senders come back, spammers don't.
The problem? Your password reset email gets delayed.
The solution? We knows the wait times and retries smartly.
Learn more
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Embed inline images directly in your emails without external hosting. Perfect for logos, email signatures, and newsletters.
See how to use it
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Embed inline images directly in your emails without external hosting. Perfect for logos, email signatures, and newsletters.
See how to use it
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DMARC is the security chief that checks both the guest list (SPF) and wax seal (DKIM). It decides what happens to suspicious emails.
No DMARC? Fake emails slip through.
With DMARC? You control your domain's reputation.
Test your DMARC policy with our free checker!
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DMARC is the security chief that checks both the guest list (SPF) and wax seal (DKIM). It decides what happens to suspicious emails.
No DMARC? Fake emails slip through.
With DMARC? You control your domain's reputation.
Test your DMARC policy with our free checker!
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DKIM is like a wax seal on your emails. It proves your message hasn't been tampered with during delivery.
No seal? Emails might be altered or spoofed.
With DKIM? Recipients know it's really from you.
Verify your DKIM signature with our free checker!
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DKIM is like a wax seal on your emails. It proves your message hasn't been tampered with during delivery.
No seal? Emails might be altered or spoofed.
With DKIM? Recipients know it's really from you.
Verify your DKIM signature with our free checker!
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Ever wonder why emails land in spam? Now you'll know exactly why. Get spam scores for every email you send, see what triggers spam filters, and improve your delivery.
Your emails deserve the inbox.
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Ever wonder why emails land in spam? Now you'll know exactly why. Get spam scores for every email you send, see what triggers spam filters, and improve your delivery.
Your emails deserve the inbox.
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SPF is like a VIP guest list for your domain. It tells email bouncers: "These servers are with me!"
No guest list? Party crashers (spammers) pretend to be you.
With SPF? Your emails get the VIP treatment.
Check who's on your list with our free SPF checker!
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SPF is like a VIP guest list for your domain. It tells email bouncers: "These servers are with me!"
No guest list? Party crashers (spammers) pretend to be you.
With SPF? Your emails get the VIP treatment.
Check who's on your list with our free SPF checker!
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Managing blocked email addresses just got a whole lot easier.
→ Complete overview of all suppressions across projects
→ Filter by type, date, or email address
→ Remove addresses from blocklist with one click
→ Automatic checks before every send
👇
Managing blocked email addresses just got a whole lot easier.
→ Complete overview of all suppressions across projects
→ Filter by type, date, or email address
→ Remove addresses from blocklist with one click
→ Automatic checks before every send
👇
Use our test email addresses for your test emails. They're free and don't count toward your monthly limit.
🟢 ok@testing.lettermint.co
🟠 softbounce@testing.lettermint.co
🔴 hardbounce@testing.lettermint.co
Use our test email addresses for your test emails. They're free and don't count toward your monthly limit.
🟢 ok@testing.lettermint.co
🟠 softbounce@testing.lettermint.co
🔴 hardbounce@testing.lettermint.co
Building projects that need real email? Whether it's your portfolio site, side project, or that #startup idea you're launching from campus. Focus on your code, not email infrastructure.
Lettermint is FREE for students 👇
Building projects that need real email? Whether it's your portfolio site, side project, or that #startup idea you're launching from campus. Focus on your code, not email infrastructure.
Lettermint is FREE for students 👇
Apple Branded Mail lets you show your actual logo on iPhone, iPad and Mac for FREE. Unlike BIMI, no expensive certificates needed.
Time to show your brand.
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Apple Branded Mail lets you show your actual logo on iPhone, iPad and Mac for FREE. Unlike BIMI, no expensive certificates needed.
Time to show your brand.
👇
Our official Nuxt module is here! Send transactional and broadcast emails directly from your @nuxt.com app.
Get started in seconds:
npx nuxi module add lettermint
Our official Nuxt module is here! Send transactional and broadcast emails directly from your @nuxt.com app.
Get started in seconds:
npx nuxi module add lettermint
Ask questions, share feedback, and chat with other developers. And last but not least... get €10 credit for your Lettermint account! 👀💰
Ask questions, share feedback, and chat with other developers. And last but not least... get €10 credit for your Lettermint account! 👀💰
We've got free test email addresses that won't hurt your domain reputation. Plus they don't count toward your monthly usage.
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We've got free test email addresses that won't hurt your domain reputation. Plus they don't count toward your monthly usage.
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We now support tags! Categorize your transactional emails for a better overview and improved organization.
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We now support tags! Categorize your transactional emails for a better overview and improved organization.
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Our new Time to Inbox page shows real-time delivery speeds to Gmail, Yahoo, Outlook & more. Updated every 15 minutes.
See how fast your transactional emails arrive.
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Our new Time to Inbox page shows real-time delivery speeds to Gmail, Yahoo, Outlook & more. Updated every 15 minutes.
See how fast your transactional emails arrive.
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Get instant notifications when your transactional and broadcast emails are delivered, bounced, or marked as spam. Catch every email event directly in your application.
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Get instant notifications when your transactional and broadcast emails are delivered, bounced, or marked as spam. Catch every email event directly in your application.
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Safely and reliably deliver large volumes of emails through Lettermint’s #European infrastructure.
🔗 lettermint.co/changelog/m...
Safely and reliably deliver large volumes of emails through Lettermint’s #European infrastructure.
🔗 lettermint.co/changelog/m...
We've removed the daily limit on our Developer plan. Send up to 300 emails per month without any restrictions!
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We've removed the daily limit on our Developer plan. Send up to 300 emails per month without any restrictions!
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