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Subject Lines
Emails with shorter subject lines significantly outperformed emails with longer subject lines. - MailerMailer (2008)
Emails that had only the subject line personalized (12.4% Open Rate & 1.7% CTR) did worse than those with no personalization at all (13.5% Open Rate & 2.7% CTR). - MailerMailer (2008)
Seven in 10 US Internet users said they judged these "from" and "subject" lines when deciding whether to report an email as spam. - E-Mail Sender and Provider Coalition and Ipsos (December 2007)
35 percent of email users open messages because of what's contained in the subject line. - Jupiter Research (2007)
Including the company name in the subject line can increase open rates by up to 32 percent to 60 percent over a subject line without branding. - Jupiter Research (2007)
Words that were identified as innocuous words that won't trigger a spam filter, but will negatively affect your open rates. They are: Help, Percent off, and Reminder.
- MailChimp (2007)
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Personalization such as including a recipient's first name or last name does not significantly improve open rates. - MailChimp (2007)Providing localization, such as including a city name, does help improve open rates. - MailChimp (2007)
Repeating the exact same subject line for each newsletter accelerates the drop in open rates. While it is important to establish continuity and branding of the newsletter, ideally each new campaign should provide a clear indication in the subject line of what is inside this newsletter that is of interest. - MailChimp (2007)
The general rule of thumb in email marketing is to keep your subject line to 50 characters or less. Our analysis found this to generally be the rule. The exception was for highly targeted audiences where the reader apparently appreciated the additional information in the subject line. - MailChimp (2007)
As a best practice the From and Subject line should work in tandem. The From line should communicate who you are as the sender. As much as possible this entry should not change and should concisely convey who you are. - MailChimp (2007)
Within the category of promotional emails, the same basic rules apply. Keep the message straightforward and avoid using splashy promotional phrases, CAPS, or exclamation marks in your subject lines. Subject lines framed as questions can often perform better. - MailChimp (2007)
An examination of nearly 2,000 subject lines from emails from 94 major online retailers that were sent during February, March and April found that 72% of them were promotional in nature. - Email Experience Council/RetailEmail.Blogspot, "Retail Email Subject Line Study" (June 2007)
Approximately 9% of emails in the sample used hybrid subject lines, those that contain both promotional and non-promotional elements. - Email Experience Council/RetailEmail.Blogspot, "Retail Email Subject Line Study" (June 2007)
More than 39% of the retailers in the study had used at least one hybrid subject line during the 3-month period. - Email Experience Council/RetailEmail.Blogspot, "Retail Email Subject Line Study" (June 2007)
Non-ASCII, non-encoded subject lines broke/rendered incorrectly in both the List View and Message View at 44% of the top tier ISPs, notably AOL, Cablevision, and Earthlink. - Pivotal Veracity (2007)
Non-ASCII, encoded subject lines broke/rendered incorrectly in the List View at 41% of the top tier ISPs. - Pivotal Veracity (2007)
Non-ASCII, encoded subject lines broke/rendered incorrectly in the Message View at 53% of the top tier ISPs, notably Hotmail, Yahoo and Comcast. - Pivotal Veracity (2007)
During the week leading up to Christmas, plus Christmas Day itself, 24% of the emails sent by the largest online retailers promoted e-gift cards, and 27% of those emails mentioned e-gift cards in their subject line. Of all the major e-retailers that sent emails during this period, 29% promoted their e-gift cards in their emails. - Email Experience Council/RetailEmail.Blogspot (January 2007)
69% said they make the decision to click on the "report spam" or "junk" button using the subject line, according to the ESPC. - Email Sender and Provider Coalition (2007)
20% cited discounts and 17.5% named free shipping offers as primary influencers. - Return Path (2007)
Straightforward and headline type subject lines performed the best when analyzing subject lines of over 40 million emails. - MailChimp (2007)
The best subject lines tell what's inside, and the worst subject lines sell what's inside. - MailChimp (2007)
52% of emails reviewed in a recent study used subject lines to describe the email content but gave no indication of the value recipients would get as a result of opening the messages. - Jupiter Research (2006)
35% of email subscribers open messages based on what is in the subject line. - Jupiter Research (2006)
Business to Consumer emails with the brand or company name in the subject line enjoyed open rates of 29 percent on average, compared to 22 percent without branding, for 32 percent more opens. -Silverpop (2006)
Over 33% of those surveyed by eROI felt that if they cannot quickly see what an email is about, they will delete before even getting to the offer. - eROI (2006)
Regarding types of offers, email subscriber prefer 31% of people surveyed prefer a percentage off, with only 22% favoring a dollar amount off. - eROI (2006)
Of the largest line retailers offering send-to-a-friend functionality, 18% allow the sender to change the subject line. - Email Experience Council/RetailEmail.Blogspot (November 2006)
What Kinds of Subject Lines Most Attract Your Attention?
- 55.2% - Clearly State the Offer
- 49.6% - Discount or free shipping
- 48.8% - Brand name or sender
- 33.8% - Curious
- 30.3% - Promise immediate answers (download or survey)
- 18.7% - Short
- 15.2% - Promise to solve a specific problem
- 14.1% - Funny
- 11.0% - Has my name in it -Return Path survey evaluating Holiday Subject Lines (2006)
62% test copy. - MarketingSherpa, Email Marketing Benchmark Guide (2006)
Link placement, personalization and the "From" line are tested by 46% of marketers. - MarketingSherpa, Email Marketing Benchmark Guide (2006)
39% test the offer. - MarketingSherpa, Email Marketing Benchmark Guide (2006)
35 percent of respondents saying they are influenced by the subject line - Jupiter Research (2006)
