Check if the current pageview is associated with a Marketo lead (without using the ol’ hidden KV HTML trick)

Rendering a hidden form just to check if someone is associated is a waste of resources. Here’s how to check efficiently. →

Once you rewrite SMTP headers, you either need to re-DKIM-sign the message or stop checking DKIM

Once again forcing you to know what I know about DKIM. →

If someone recommends “Request Token Encoding: None” in a webhook, always push back

Using “None” for POST payloads usually means something else has gone terribly wrong. →

Help! My Velocity {{my.token}} previews correctly, but I can’t approve the email

At the moment of approval, fields on the $𝚕𝚎𝚊𝚍 object are empty strings (meaning "", not 𝑛𝑢𝑙𝑙). Your code needs to deal with that gracefully. →

Careful with native NodeJS fetch() in serverless setups (with any API, not just the Marketo API)

Reminder (if you needed one) that newer doesn’t mean more predictable. →

How an “unintrusive” 3rd-party tracking script caused duplicate Marketo form posts

Gotta love devs who don’t know Marketo but say “Just drop it in, trust us.” →

Have you no sense of DNS latency, sir, at long last?

Troubleshooting slow-loading email images reveals a classic culprit. →

Yes, you can use client-side {{ variable }} syntax (AngularJS, LiquidJS, Mustache, etc.) on Marketo LPs

Marketo uses both ${ } and {{ }} syntax internally, which makes mixing in other template languages tricky. But there’s always a way. →