Case Converter for Emails – Subject Lines & Body Text
Published 2026-02-05 · convertcase.in
Email formatting impacts open rates and perceived professionalism. Here's how to use case correctly in different parts of your email.
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1Subject Lines
Most email marketing best practices favour sentence case for subject lines. It feels personal and less "spammy" than ALL CAPS or Title Case.
2Email Body
Use sentence case for all body text. Consistent capitalisation improves readability and professionalism.
3CTA Buttons
Use title case or sentence case for CTA buttons: "Get Started Free" or "Get started free". Avoid ALL CAPS CTAs.
Frequently Asked Questions
Does sentence case increase email open rates?
Studies suggest sentence case feels more personal and human, which can improve open rates vs spammy-looking ALL CAPS subjects.