Let's be honest: getting an open email on April Fools' Day can be difficult. People are skeptical about what's real and what's not! So, your subject line should be eye-catching and tease your audience a bit. A great trick is to come up with some funny april fools email subject lines that will arouse curiosity but won't be too ridiculous. Use Klaviyo for split testing to see which ones resonate the most. Whether it's a playful twist on a well-known phrase or something completely unexpected, you can create subject lines that make people want to open your email.