Matjaž_Jaušove2

Hi,hard bounces are not treated the same way, what has direct impact on ability to email a lead: Hard and Soft Bounces in Email - Marketo Docs - Product Documentation Marketo won't automatically removed hard-bounced emails from the list; it just won't send some of them an email, while they will stil...

Hi Natalia,in general, it depends on "their platform". The platforms that are among LaunchPoint partners can be more or less easily integrated with Marketo and provide out-of-the box registration/attendance management.

I believe the system will remember the latest status and compare to that. Try it on a test lead/person.Best;m

Hey,I believe by GIF you meant animated GIF? That is the issue on the client side, not Marketo. Some email clients (like Outlook for Windows) don't support animated GIFs. Check out this post for more info: A Guide to Animated GIFs In Email Best;m

Then maybe the best is to first verify your instance setup, especially email deliverability: Setup Steps - Marketo Docs - Product Documentation

But is this a general Marketo issue or just specific to a single email in a program/campaign?

Are those addresses on different domains or on the same (your corporate) domain?

Does Marketo report an error or you just don't receive the test email? Have you tried to sent it to another email address?

Define the checkbox field as required.

Hi,its good to start with a sound instance and email set-up: Deliverability - Marketo Docs - Product Documentation When thats in place, there can be very different reasons why deliverability is low for a particular email/list. Search around the nation, there are many discussions on the topic.best;m