How long should my subject line be? Stephanie Price-Bell February 05, 2019 09:21 Updated Follow DESCRIPTION: We recommend keeping your Subject lines to the point. Suggested Subject line length should be no more than 45 characters. RESOURCES: Check out our our blog posts regarding subject lines. Related articles How does the send rate limiting setting on my email campaign work? How should the From line be formatted in my campaign? What's supported in Delivra's Salesforce integration? How do I create a segment for Browsed Data? What is Automation? Comments 0 comments Article is closed for comments.