LettermintLettermint
LoginStart for free
Mesh background
Lettermint

Knowledge Base

Find guides, FAQs, and tips for using Lettermint. Explore our resources to get the answers you need for sending transactional emails.

Guides

8 articles

Guides

Deliverability

8 articles

Deliverability

Definitions

7 articles

Definitions

Product

3 articles

Product
Show more

Latest articles

Definitions

What is the List-Unsubscribe header in newsletters and marketing emails?

Arrow
Guides

How to Add DNS Records to AWS Route 53 for Lettermint?

Arrow
Deliverability

Stop bot signups and prevent spam complaints and delivery issues

Arrow
Definitions

What is MX (Mail Exchange)?

Arrow
Deliverability

Outlook blocks SVG images in emails, here's what you need to know

Arrow
Guides

How to add DNS records to Neostrada for Lettermint?

Arrow
Guides

How to add DNS records to TransIP for Lettermint?

Arrow
Guides

How to add DNS records to Cloudflare for Lettermint?

Arrow
Guides

How to add DNS records to Domain Chief for Lettermint?

Arrow
Product

Why is there an automatic unsubscribe link in broadcast emails?

Arrow
Deliverability

Why is my email blocked? Policy Rejected explained

Arrow
Definitions

What is SMTP?

Arrow
Definitions

What is DKIM2?

Arrow
Deliverability

What is an email subdomain and when should you use one

Arrow
Deliverability

How to prevent your emails from going to spam during holidays (Gmail & Outlook)

Arrow
Deliverability

What is greylisting and why doesn't email arrive immediately?

Arrow
Definitions

What is DKIM?

Arrow
Guides

Using Lettermint SMTP for Synology Email Notifications in DSM

Arrow
Definitions

What is SPF?

Arrow
Definitions

What is DMARC?

Arrow
Guides

How to set up Apple Branded Mail for your business or brand?

Arrow
Deliverability

Test emails with our test email addresses and prevent problems

Arrow
Account

Verified account required to send emails, this is why

Arrow
Product

What is the Difference Between Transactional and Broadcast Emails?

Arrow
Account

How to use a Discount Code?

Arrow
Product

Send without domain limitations using our add-on

Arrow
Deliverability

Understanding email statuses: hard bounce, delivered, pending, and more

Arrow
Guides

Integrate Lettermint in WordPress with WP Mail SMTP

Arrow
Need more help?

Can't find what you're looking for?

If you couldn't find the information you were looking for, please don't hesitate to reach out to us. Our team is here to assist you with any questions you may have.

Contact us