40+ Best free trial subject lines

The SaaS industry has been warming up to free trials because they've realized how valuable they can be.

Those SaaS free trial emails? They're like friendly messengers that help introduce users to a service, spark their interest, and even make our lives easier by turning trial users into paying customers when the trial ends. Plus, when these emails are well-designed, they can act like trusty guides, helping you spot and fix any bumps along the user journey.

If you're here, your SaaS company offers a free trial, and you have emails on your mind. You're in the right place, as here we share free trial subject lines to accompany those emails.

Best free trial subject lines for promotion

Let’s start straight from the most important thing – promoting your free trial to the prospects. Simply highlighting that it’s free won’t be enough. After all, the people still need to enter their personal and possibly also card details. So how do you convince them to at least open an email about a free trial?

These subject lines might give you a hint:

Try it free today!

Your free trial is waiting

Experience the best on us

Dive into [Product] for free

Free trial: [Product] awaits

Join us for free

Try before you buy

[First Name], get started free

[Product] - try it free

[First Name], it's free for you

Dive into [Product]—no cost attached!

Unleash your potential with a free trial

[First Name], your free [Brand] experience

Experience [Product] brilliance, no charge

Your free [Product] access awaits!

Good free trial subject lines for confirmation

If you’ve got a new customer signed up for your free trial, congratulations! Don’t forget to inform them that their free account is all setup and guide them through the trial process in an email.

Here are the subject lines to accompany your confirmation email:

Welcome to your new experience!

Your free access begins now

It's all yours - start exploring

Let's get started, shall we?

Begin your trial today

Your free trial is active!

Ready, set, trial!

Your [Brand] trial is live

[First Name], trial unlocked

Dive into your trial now

[First Name], your trial is live

Get started with your trial

You guide to a free trial

First steps of your free trial

Yay! Your free trial is here

Catchy free trial subject lines for expiration

Unfortunately, all good things must come to an end. Luckily, the expiration of a free trial isn’t the complete end. It’s an opportunity to gain reviews about your product and offer a paid trial! 

Take a look at these expiration subject lines and pick yours:

Your [Product] trial: time's running out!

[Brand] free trial ending soon

Try premium with [First Name]'s offer

Exclusive [Product] access expires soon

Act now: [Brand] paid trial available

Your [Product] trial ends this week

Last chance: [Brand] premium trial

Extend your free trial today!

[First Name], upgrade your trial now

Time to go pro with [Product]!

Upgrade to premium [Brand] access

[Product] free trial ends in days

[Brand] VIP offer for you

Your [Product] offer: go pro!

[First Name], unlock premium access

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Open Sesame: Subject lines to get your emails read

Your perfect email won't matter if it won't be opened. Want some inspiration? Check these robust subject lines, designed for maximum opens of your promotional emails.
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Hero illustration

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