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 Share Campaigns through Social Media What is Send Rate Limiting for email campaigns? How should the From line be formatted in my campaign? What characters should be avoided in my campaign name? What's supported in Delivra's Salesforce integration? Comments 0 comments Article is closed for comments.