120+ Real SaaS Email Subject Line Examples

Subject lines are tiny but mighty details in your SaaS email marketing strategy. After all, they play gate keeper to everything inside the email.

[Updated May 2020]

That’s why it sucks when you’re stuck on writing a subject line. I mean it’s just a few words - why is it so hard! You want it to be intriguing so the person wants to click, but you also avoid clickbait. We all need a little inspiration sometimes, and I’m here to fill the subject line void.

Below I’ve compiled a list of 65+ SaaS subject lines that have made their way to my inbox. To make it easier to find the inspiration you need, I’ve even grouped them by email type. BTW, you should let me know what subject lines have stood out to you lately. I’m that weirdo that collects emails.

Anyway, I hope this list of subject line ideas can help get your creative juices flowing again. Happy writing!

Lead Nurture Email Subject Lines

• Your churn is still rising, and so is your anxiety

• Welcome! What's your business?

• Become an Insider.

• You're on the waitlist. One question...

• Your sneak preview 👀

• fyi

• Hey! Here's that Email Marketing Guide that you wanted (and a bonus)

• Templates Just For You 💕

• Here's Your Download: The Guide to User-Generated Content: A Playbook for Ecommerce Marketers

• Did you sign up for the webinar?

• How can we help you, Stephanie?

• [Company] Demo Confirmation - While you wait.

• In case you haven't heard...

Onboarding Email Subject Lines

• Want to Get Paid Lickety-Split?

• Jake's Thriving. You Can Too.

• Wait, I didn't spend $300 at the taco truck...

• Join the millions taking control of their money

• don't lose this

• Check in with real insights in real time.

• Growing your business? Here's how to compete in the big leagues.

• What rhymes with hats and helps you make better decisions?

• Goodbye, guessing. Hello, A/B testing! 👋

• Steph Knapp 5 year customer support strategy

• Record it, or it didn't happen...

• 4 templates to make your work day better

• I’ve got your back

• Here to answer your FAQs

• Important: Your trial expires in 4 days

• Get the Most Out of Your [Company] Free Account

• We're So Glad You're Here

• Grow your audience with Facebook and Instagram Ads

• ...ready to get organized?

• time is finite (how are you gonna spend yours?)

• Steph, The Best Decisions Start Here

• Find the perfect plan for your business

• Steph, your trial ends in 2 days

• Resources for your trial

• Loom Pro is waiting to be unlocked

• You're 90% of the way there

• Organize everything with databases 

• Add More Connections in GetBusy

• How easily do you answer questions with your data?

Engagement / Retention Email Subject Lines

• [NEW] How do you deliver personalized customer service at scale? 🤔

• Your credit score questions answered

• How to Use Niche Marketing to Build a Business from the Ground Up

• REMINDER: Upgrade by May 28 to Get 40% OFF

• The 45 best user engagement tools, choosing the right product marketing metrics, and breakfast 🍩

• How to Stop Customer Complaints Before They Happen

• Success secrets from the experts

• Squash the “boring” business stigma with these storytelling tips 💥

• Overcome your video production problems (on a budget) 💰

• Things your boss wants to know

• How to quickly save those good reads for later

• Newsletter | 70% of consumers prefer eco-friendly companies + See overtime laws by state

• Newsletter | 50% Of Businesses Fail: Don't Let That Hold You Back - Tips Inside

• Money + Relationships Roundup

• What's New: Q1 Product Update

• Check Out Your Amazing Stats!

• Growth tip #3: To expand your pipeline, narrow it first

• Building a firm analytics foundation for today and beyond

• Sharing some client results

• Five steps for implementing user behavior analytics

• How to build a multi-camera live streaming setup 🎥

• Here's your copy of part one of Litmus' "3 Pillars of a Successful Email Program"

• CRMs Can Increase Your Sales By Up To 30%. Find Out How.

• Bring a Culture of Experimentation to Your Team

• Onboarding lessons from Nintendo + aligning emails with in-app messages

• How to Spend Your First $100 on Google Adwords

Winback Email Subject Lines

• Discover New Tools to Grow Your Business

• We miss you, is that weird?

• Your Trial Is Over. It's Time to Upgrade

• This Offer Goes *Poof* in 2 Days

• We miss you already

• Want your free trial extended?

• [Last chance]: Close the feedback loop with customers

• Warning of upcoming account deletion

• in case you missed it…($100 off + a bonus)

• Why Not Save 30%?

• Same Great Features, Even Better Price

• One more week, for free :)

• Is Stephanie doing this?

• This doesn't have to be a goodbye

• Your Basecamp 3 trial will be canceled soon

• Your trial has ended. What's next?

• How did your trial go? 📣Share your feedback

• Let's make it official!

• Need more time to decide? Check out our Free plan

• We want you back! (This one's on us)

• But is this goodbye?

• Ready to Test Drive New Features?

Lack of Activity/ Engagement

• Looks like you didn’t have any writing activity last week.

• We want to send you stellar stats and awesome achievements!

• We’re not seeing any activity from last week.

• We miss you! Make sure you’re logged in.

• Reminder: Your credit score has arrived

• Your subscription has been changed

• Action required to keep your subscription

• Your Basecamp 3 trial has been canceled

• Action required: We need your payment details

• We miss you! Make sure you're logged in.

• Let's reconnect!

• Are we still friends? 5 reasons to say yes

• In case you missed this…

• GoToMeeting is ready when you are.

• Uh oh - you might be logged out.

Announcement / Update

• Introducing Loom for iOS 🚀

• 💡 Learn like an insider + a new app!

• [NEW] We Cut Response Time by 50% Using This Feature

• Announcing the world's first Subscription Data Platform

• Something new 🎉

• New Feature 🎉👌 Email Summaries

• Introducing the Appcues <> Salesforce Integration

• New season, new you

• Introducing: Retainers

Special: COVID SaaS Email Subject Lines

• Lead through this crisis with no regrets.

• Resources to help your business through COVID-19

• Where and when you should be advertising

• Efficiently adapting a video strategy amidst COVID-19

• [Webinar] Navigating COVID-19 as a Small Employer

• We’re here to help you navigate these challenging times

• We’re here for you

• COVID-19 Response: Cutting Prices, Removing Limits

• [NEW] 5 Email Templates for Tough Situations

• 💪 Stay motivated at home

• [NEW] 47 Insanely Practical Work From Home Tips from Our 100% Remote Team

Want to know when to send SaaS emails and what to say?

I’ve got 30+ free email templates in Essential SaaS Email Series Templates here.