Why it works
Humor reduces a stranger's natural defensive walls and creates an immediate sense of rapport. It works by signaling intelligence and safety, which makes the recipient more willing to engage with the message.
Example
I promise this is the least boring email you will open today, or at least the one with the fewest buzzwords.
An illustration of the mechanism, not a template. Copied verbatim it stops being persuasion and starts being the pattern everyone else is already sending.
Is your sequence pulling this one?
Paste it in and find out which levers are working, which are missing, and which single zero is capping the whole message.