Orttomailfloss
Ortto · Email verification

Ortto email verification, on autopilot.

Keep your Ortto audiences ready for email. mailfloss verifies the addresses in them and lets you choose what happens to the bad ones: review them first, write the results to Ortto fields, or unsubscribe them.

4.9/5 on Capterra · 5,000+ email marketers
From $29/mo for 10,000 verifications a month — or 500 a month free, forever
Free 7-day trialEasy setupMoney-back guarantee
Main newsletter audience
Ortto
Before
9 subscribers
unverified — anything could be in here
Sender reputation: at risk
How it works

Connect once. Choose the cleanup. Then it runs.

01

Connect your Ortto account

Create a Custom API data source in Ortto, copy its private key, and paste it into the Ortto tile in mailfloss. mailfloss finds your Ortto region and lists your audiences.

Connect Ortto
02

Choose what happens to bad addresses

Nothing changes in Ortto until you pick a cleanup action: ask me first, report only, update a field, unsubscribe, or delete. Turn on Typo Fixer to correct addresses like gmial.com in place.

mailfloss settings
Fix Typos
Instafloss
Decay Protection
03

Keep your audiences clean

Verify everyone or one audience now, then let Autofloss check new people every day and Decay Protection recheck your list every month. Add Instafloss once its data destination is set up in Ortto.

Removed today
0bad emails
Why this matters

Manual cleanup vs mailfloss for Ortto.

Doing this yourself in Ortto means exporting, checking, and importing over and over. Here is what changes when mailfloss is connected directly.

Task
Doing it yourself in Ortto
With mailfloss connected
How the connection works
A CSV round-trip, or a Zapier recipe you build and maintain yourself.
A native connection mailfloss builds and maintains, using a key from an Ortto Custom API data source.
Identify bad addresses
Export from Ortto, verify elsewhere, then re-import the results.
mailfloss checks your Ortto audiences on demand and on a schedule.
Fix typos like gmial.com
Usually deleted or left untouched.
Typo Fixer corrects the address on the same Ortto person.
Catch decay in old subscribers
Manual re-verification when someone remembers.
Decay Protection rechecks your list every month.
Check new signups
New people wait in your audiences until the next manual check.
Instafloss checks people as they enter an audience, once you add its data destination in Ortto.
Actions after verification
Unsubscribe, update, or delete people by hand.
Pick one action and mailfloss applies it in Ortto: review first, update fields, unsubscribe, or delete.
What you get

mailfloss fits the way Ortto teams clean lists.

The same cleanup tools, working inside your Ortto audiences.

Typo Fixer

Corrects misspelled addresses like gmial.com in place. If the corrected address already belongs to another person in Ortto, mailfloss leaves that person alone.

Instafloss

Checks new people as they enter an Ortto audience. You add its webhook URL as a data destination in Ortto; token protection is optional and recommended.

Autofloss

Verifies the people added to your Ortto account every day and applies your cleanup action.

Decay Protection

Rechecks your Ortto list every month, catching addresses that went bad after they joined.

Results in Ortto fields

Update a field writes each person’s verification result to eight text fields whose names start with mf_.

Review first

A new connection changes nothing until you choose. Ask me first lists bad addresses for review; Report only emails you the results.

Why connect

What changes when mailfloss watches your Ortto list.

Daily
Checks of the people added to your Ortto account, with Autofloss.
Fewer
Bounces, typo losses, and disposable signups.
Better
Sender reputation from a healthier list.
Zero
People mailfloss creates in your Ortto account.
5,000+ teams clean their lists with mailfloss
What customers say
Headshot of Nick James
Nick James
Business Owner
We enjoy having amazing clean email data every day and a fantastic sender reputation. No blacklists, all time low email bounce rate. We have tried other email verifiers. But nothing comes close to mailfloss.

Developers can verify addresses in real time with the mailfloss email verification API; every plan is on the mailfloss pricing page, and email decay protection explains why a clean list decays without ongoing cleanup.

In short

How do I verify email addresses in Ortto automatically?

Connect mailfloss to Ortto with a private API key from a Custom API data source. mailfloss verifies the people in your audiences, can fix typos like gmial.com in place, and applies the cleanup action you pick: ask me first, report only, update a field, unsubscribe, or delete. Autofloss checks new people every day and Decay Protection rechecks your list every month. Instafloss checks people as they enter an audience once you send Ortto’s Entered audience activity to its webhook.

What does the Ortto connection need before you turn it on?

Four things to know first, so nothing in your Ortto account surprises you.

Instafloss needs a data destination you add in Ortto
Ortto does not let apps register webhooks, so there is no one-click install. Turn on Instafloss in mailfloss, add its URL as a Webhook data source in Ortto, then send the Entered audience activity to that destination. Instafloss needs the Business plan or the Instafloss add-on.
Field updates need eight free custom-field slots
The Update a field action writes each result to eight text fields whose names start with mf_. If your Ortto account has no room for them, remove unused fields in Ortto first. mailfloss never deletes your fields for you.
An Autopilot key does not carry over
Ortto replaces Autopilot in mailfloss. Existing Autopilot connections keep working, but a new connection uses the Ortto tile and a key from an Ortto Custom API data source. An old Autopilot key will not work there.
Ortto can hold the same address more than once
Ortto lets several people share one email address, so your cleanup action applies to each person with a bad address. Start with Ask me first if you want to review results before anything changes.
Ortto FAQ

Common questions.

Yes. Choose the Ortto tile in mailfloss and paste a private API key from a Custom API data source in Ortto. mailfloss finds your Ortto region, lists your audiences, and verifies the people in them. Developers can also connect Ortto through the mailfloss email verification API.

Related resources

Ready when you are

Stop paying to email a leaky list.

Connect Ortto with one API key. mailfloss starts by reporting, and nothing changes in Ortto until you choose a cleanup action.

From $29/mo for 10,000 verifications a month — or 500 a month free, forever
Every month you wait, about 2% of your list goes bad (MarketingSherpa: 2.1% a month).
Free 7-day trialEasy setupMoney-back guarantee