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MailUp · Email verification

MailUp Email Verification

Connect mailfloss with MailUp to verify subscribers, clean email lists, reduce bounces, and protect deliverability automatically.

4.9/5 from 5,000+ email marketers
Free 7-day trialEasy setupMoney-back guarantee
Main newsletter audience
MailUp
Before
9 subscribers
unverified — anything could be in here
Sender reputation: at risk
Get started in 60 seconds

Three clicks. Then it just runs.

01

Connect your MailUp account

Authorize MailUp from mailfloss, choose the newsletters you want watched, and your first sync starts automatically.

Connect MailUp
02

Customize your settings

Pick the features to turn on for MailUp. Most teams start with Typo Fixer plus daily cleanup, then add real-time protection where signups enter.

mailfloss settings
Fix Typos
Instafloss
Decay Protection
03

Watch your list clean itself

mailfloss checks new subscribers on schedule, writes fixes and removals back to MailUp, and keeps the list clean without another export.

Removed today
0bad emails
Why this matters

Manual cleanup vs mailfloss for MailUp.

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

Task
Doing it yourself in MailUp
With mailfloss connected
Identify bad addresses
Export from MailUp, verify elsewhere, then re-import results.
Automatic - mailfloss checks MailUp contacts in the background.
Fix typos like gmial.com
Usually deleted or left untouched.
Fixed automatically when a safe typo pattern is recognized.
Catch decay in old subscribers
Manual re-verification when someone remembers.
Scheduled re-checks keep older contacts from quietly rotting.
Block fake or disposable signups
MailUp may catch some, but the cleanup still needs follow-through.
Instafloss can verify new signups before they pollute the list.
Actions after verification
Tag, archive, delete, or suppress by hand.
Set the action once and mailfloss applies it inside MailUp.
Time you spend per month
Hours of recurring list operations.
Roughly zero after setup.
What you get

mailfloss fits the way MailUp teams clean lists.

Same autopilot cleanup, tuned for your MailUp newsletters.

Typo Fixer

Recognizes common typo patterns and helps recover typoed subscribers before good contacts are silently lost.

Instafloss

Protects signup flows in real time where they enter your marketing system, so invalid, disposable, and risky addresses are caught early.

Autofloss

Runs daily against new MailUp contacts and applies your cleanup rules without another CSV export.

Decay Protection

Re-verifies older MailUp contacts on a schedule, catching addresses that went bad after they joined.

Custom Keep & Remove Rules

Whitelist VIPs, blacklist domains, and tune removal behavior for each MailUp connection.

Auto-Actions

Choose the cleanup outcome you want: review first, clean automatically, update fields, or notify another workflow when attention is needed.

Why connect

What changes when mailfloss watches your MailUp list.

Clean
MailUp contacts before each campaign.
Fewer
Bounces, typo losses, and disposable signups.
Better
Sender reputation from a healthier list.
Zero
Manual cleanup work after first-time setup.
5,000+ teams clean their lists with mailfloss
BusbudHoneyloveWhimsicalOoniPurple CarrotBrightHireTruvaniLearnystRoadtrippersSheep Inc.HR AcuityMOD LightingFairfax & FavorSnackCrateNeighborlyPodiaHometown ApparelConstellationLinda's1st PhormKokoonPeter GlennwikiHowEvernampons
MailUp FAQ

Common questions.

Yes. mailfloss connects to MailUp so teams can automatically verify email addresses, reduce bounces, fix common typos, and keep the list clean in the background.
Ready when you are

Stop paying to email a leaky list.

Connect your email platform in 30 seconds. mailfloss starts catching typos and cleaning your list on autopilot.

Free 7-day trialEasy setupMoney-back guarantee