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Best Referral Email Subject Lines

Copy and be inspired by our email subject line collection. Increase open rates and engagement with these best email subject lines

All

Sales

Follow-up

Newsletter

Customer Onboarding

Renewal Reminder

Referral

Exclusive Rewards for Referrals

Engaging way to encourage referrals by highlighting rewards.

Help Us Grow: Refer [Brand]

Engaging way to invite referrals and emphasize community growth.

Investing in [market name]? Quick pitch for [company]

Direct and relevant for investor outreach.

Last Chance to Refer and Earn

Urgent way to remind customers about the deadline for referrals.

Quick favor? (Or an intro)

Making it easy to say yes.

Refer a Friend to [Brand] Today

Straightforward way to ask for referrals and highlight benefits.

Refer and Get Rewarded with [Brand]

Straightforward way to explain the rewards for referrals.

We Love Referrals! 🎉

Engaging way to invite referrals and express gratitude.

We’re Grateful for Your Support

Personalized way to express gratitude and encourage referrals.

Your Network, Our Solution

Professional way to encourage referrals by highlighting the value of your solution.

Your Referral Can Make a Difference

Engaging way to encourage referrals by highlighting their impact.

Your Referral Matters to Us

Personalized way to express gratitude for referrals.

Curious

Explore All ➔

Help Us Grow: Refer [Brand]

Encourages referrals by emphasizing growth and community.

Your Referral Can Make a Difference

Emphasizes the impact of referrals and encourages action.

Urgent

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Don’t Let Your Benefits Expire

Highlights the benefits of renewing on time.

Don’t Miss Your Renewal Opportunity

Emphasizes the importance of renewing on time.

Final Chance to Renew Your Subscription

Creates urgency and encourages immediate action.

Professional

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Exclusive Rewards for Referrals

Highlights the rewards for referring others.

Investing in [market name]? Quick pitch for [company]

Investors get tons of pitches—this is short and to the point.

Quick favor? (Or an intro)

Short, polite, and low effort to reply to.

Casual

Explore All ➔

We Love Referrals! 🎉

Creates excitement and encourages referrals.

Personalized

Explore All ➔

I forgot to mention this last time...

Adds intrigue, making them curious about what was missed.

Just checking in – did this get buried?

It feels light and non-aggressive while gently prompting a response.

Just following up before I close this out

Keeps it warm, polite, and leaves room for response.

VP of Sales

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Last Chance to Refer and Earn

Creates urgency and encourages immediate referrals.

Quick favor? (Or an intro)

Short, polite, and low effort to reply to.

Refer a Friend to [Brand] Today

Directly invites referrals and encourages immediate action.

SaaS Founder

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Did I lose you? 👀

Feels human, non-pushy, and keeps things casual.

Your Renewal is Just Around the Corner

Creates anticipation and encourages preparation.

Your Subscription is Expiring Soon

Clearly communicates the urgency of renewal.

CEO

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Investing in [market name]? Quick pitch for [company]

Investors get tons of pitches—this is short and to the point.

Quick favor? (Or an intro)

Short, polite, and low effort to reply to.

We’re Grateful for Your Support

Expresses gratitude and encourages continued support through referrals.

Marketer

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Exclusive Rewards for Referrals

Highlights the rewards for referring others.

Refer and Get Rewarded with [Brand]

Clearly communicates the benefits of referring others.

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