unlock Bounce Rates under 2%

The Free Email Bounce Prevention App for

"A no-brainer for outbound sales teams that want to book more pipeline with email in 2025"

Shuo Wang, Chief Revenue Officer @ Deel

Trusted by deliverability-obsessed teams

See it in Action

We prevent email bounces in 3 easy steps

Fully automated in Outreach.io for all your reps

1
Verify prospect emails as they get added to sequence.
2
Identify which emails are invalid before they are sent.
3
Prevent the invalid emails from being sent & bouncing.
Our Users Love Us!

Customer Love

Frontier allows us to not worry at all about whether our emails are going to get through to our key prospects.

Paul Rosa IV

Senior Sales Dev Manager, Pave

When my reps sequence a prospect, I want to be sure their email won't bounce so I can stop worrying about reps damaging our company's domain deliverability.

Paul Johnson

Head of Business Dev, Safetywing

I trust that anytime a rep enrolls a contact into a sequence, that the email won't bounce.

Sunny Kullar

Head of Strategy & Ops, EvenUp
WHY THEY LOVE US

An automated way to prevent email bounces that's free and easy.

No rep enablement - it just works
The app will automatically verify every email being sequenced by a rep - they don't need to remember to click anything.
Results in 24 hours
Email bounces will start to be prevented immediately after install.
SOC-2 Type II
Frontier is SOC 2 Type 2 compliant.
Free
We have made this app entirely free to use.
5 minute install
Easily install the authorized app via the Outreach.io marketplace in 5 minutes - no credit card required.
Catch-all verification included
Frontier will detect "catch-all" email addresses and prevent them from bouncing.
What you Get

Less Bounces = More Meetings

Achieve Best-in-Class Bounce Rates

Reduce your bounce rates by preventing invalid emails from "hard bouncing".

Improve Email Sender Reputation

High bounce rates negatively impact your email sender reputation.

Prevent Spray & Pray Damage

Prevent the damage caused by one eager rep emailing invalid emails.

Case study
Deel dropped their bounce rate across 250 reps from 8% to 2% in 30 days.
Deel case study graphic
Outreach.io logo
Frontier Bounce Prevention
Automatically detect 'catch-all' email addresses that would bounce and removed them from email steps.

One-click install through
Outreach Marketplace

Why it Matters

Bounces damage your email deliverability.

Excessive "hard bounces" from one eager rep or across your team will damage your sender reputation score, leading to lower email deliverability - for your entire team.
See the Impact

Real-time Tracking Built into Outreach

Sample Outreach.io dashboard

Frequently Asked Questions

How does it work?

Frontier's app automatically verifies the email address of a prospect every time they are added to a sequence. If the email is invalid, that prospect will auto-skip the email tasks in that sequence - thereby preventing the email bounce. Simple!

Why should I care about bounce prevention?

High bounce rates negatively impact your email sender reputation. If your team has a bounce rate above 5% in Outreach.io, then your email deliverability won't be optimal. Bounce prevention will slash your bounce rates and protect your sender reputation score.

Doesn't Outreach already do this?

No, Outreach does not verify contact data for its customers - nor does it prevent emails from bouncing. It only reports on a bounce after it happens.

What's the process to install?

It takes 5 minutes to install the app. Just follow this onboarding flow, install the Outreach.io app. It will start working immediately.

How much does it cost?

It's entirely free to use, no credit card required.

How secure is Frontier and its Outreach app?

Frontier is SOC 2 Type 2 certified and its Outreach.io app is fully authorized and verified by the Outreach.io security review process.

Let's Get Going

Protect your Email Deliverability

Start Today - it's Free