Reliable Email Deliverability Made Easy
Joined May 2021
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🌓 Is your email ready for the dark side? Learn how to design emails that look great in both light and dark mode! Check out our latest blog post for best practices.
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#darkmode
Your email API key doesn't belong in your source code. 🔐
✓ Use environment variables or a secrets manager
✓ Never commit keys to Git
✓ Separate test and production credentials where possible
✓ Rotate exposed keys immediately
Small habits. Fewer security headaches.
Before shipping transactional email, test more than the happy path.
→ Invalid addresses
→ Authentication failures
→ Rate limits
→ Temporary failures
→ Bounces
Sending one test email successfully doesn't mean your integration is production-ready.
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Some of your most-read emails are probably:
Order confirmations.
Password resets.
Shipping updates.
Yet transactional emails are often treated like database receipts.
Delivery comes first.
But once the email arrives, the experience still matters.
sendlayer.com/blog/how-to-im…
Sending email from Power Automate?
There are two ways to approach it:
📨 Outlook connector
⚙️ SMTP
The one you choose depends on what you're building.
Here's how to set up both 👇
sendlayer.com/blog/how-to-se…
Passwordless auth:
Enter email → Magic link → Sign in.
Simple.
Until the magic link lands in spam. 😬
If authentication depends on email, email delivery is part of your auth infrastructure.
NextAuth SMTP + API guide 👇
sendlayer.com/blog/how-to-se…
Why send transactional email from a subdomain?
Reputation isolation.
A problem with your marketing emails shouldn't take down your:
→ Password resets
→ Receipts
→ Account notifications
Separate the streams. Protect the important stuff
Learn more: sendlayer.com/blog/why-send-…
Your Magento store sends emails customers actually need:
→ Order confirmations
→ Invoices
→ Password resets
→ Shipping updates
They shouldn't be getting lost in spam.
Here's how to configure Magento 2 with SMTP for reliable transactional email 👇
sendlayer.com/blog/how-to-co…
Ever wondered how brands get their logo to appear next to their emails? 👀
That's BIMI.
But BIMI isn't a shortcut to better deliverability.
You still need strong email authentication underneath: SPF, DKIM, and DMARC enforcement.
Here's how it works 👇
sendlayer.com/blog/what-is-b…
A user signs up.
“Check your email for a verification code.”
Nothing.
They wait. Resend. Eventually give up.
20 minutes later, it lands in spam.
That's not just an email problem. It's a product experience problem.
Transactional email needs to arrive when it matters.
A basic email API request isn't complicated:
From
To
Subject
HTML/Text
→ Send
Production gets more interesting:
Attachments
CC/BCC
Error handling
Webhooks
Delivery events
Bounces
Sending an email is easy.
Building email reliably into a product is the interesting part.
Developers, it's Friday
Time for email debugging group therapy😅
What's your worst email bug?
We'll start:
• Works locally, fails in prod
• Password resets disappear
• Everything lands in spam
• DNS looks right (it isn't)
• “Delivered” but nowhere to be found
Your turn👇
Fix WordPress Deliverability Issues: sendlayer.com/blog/how-to-se…
