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Subject lines that drive engagement
Improve your open rates with data-driven feedback on word count, character count, punctuation, and emoji use.
Expert knowledge at your fingertips
Mailchimp sends more than 10,000 emails every second. This data powers subject line helper to guide you toward compelling subject lines that get your audience’s attention.
Guidance when it matters
As you’re writing, subject line helper provides feedback on word and character count, as well as emoji and punctuation use. It’s your free, personal editor.