Knowledge Base
Knowledge Base
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Get Started
Using and Understanding our mailfloss Dashboard
Category Definitions
Status Definitions
mailfloss Recommended Settings
Which failed email addresses should I delete from my list?
What is the recommended procedure for dealing with Accept All email addresses?
What browsers work best with the mailfloss app?
How to enable Two Factor Authentication (2fa)
How to activate cached results for flossing
What's a false negative and why is it a risk?
What's a false positive and why is it a risk?
What is email bounce rate?
Acceptable bounce rate
Verification options for non-supported ESPs
Understanding the Risks of Email Verification
Understanding the Risks of Sending to Old Email Lists
Frequently Asked Questions
Is mailfloss a real-time email verifier?
What's the difference between Autofloss and Instafloss and what are the pros and cons of each?
Does mailfloss detect and handle spam bots?
Are duplicate email addresses removed?
How are you different from X (some email verification services)?
How fast is mailfloss?
How accurate is mailfloss?
Can you bypass MailChimp's Omnivore?
Do you offer Single Sign On authentication (SSO)?
About the Option of Pausing Your Subscription for 3 Months
How to Update Your Account Information
Future Integrations: What's Next for mailfloss?
How to connect an email service provider
Connect an Email Service Provider
Why can't I register/integrate with my desired email provider?
How to connect Encharge to mailfloss
How to connect GoHighLevel to mailfloss
How to connect Ghost to mailfloss
How to connect Beehiiv to mailfloss
How to connect Mailerlite to mailfloss
How to connect ClickFunnels to mailfloss
How to connect ActiveCampaign to mailfloss
How to connect AWeber to mailfloss
How to connect Campaign Monitor to mailfloss
How to connect Constant Contact to mailfloss
How to connect Kit to mailfloss
How to connect Keap (formerly Infusionsoft) to mailfloss
How to connect Ontraport to mailfloss
How to connect MailChimp to mailfloss
How to connect Sendlane to mailfloss
How to connect Klaviyo to mailfloss
How to connect Brevo to mailfloss
How to connect MailerLite Classic to mailfloss
How to connect Moosend to mailfloss
How to connect Gist to mailfloss
How to connect HubSpot to mailfloss - Oauth
How to connect Drip to mailfloss - Oauth
How to connect Intercom to mailfloss
How to connect GetResponse to mailfloss
How to connect Emma to mailfloss
How to connect iContact to mailfloss
How to connect Sendpulse to mailfloss
How to connect Wishpond to mailfloss
How to connect Benchmark to mailfloss
How to connect Mautic to mailfloss
How to connect Campaigner to mailfloss
How to connect MailUp to mailfloss
How to connect VerticalResponse to mailfloss
How to connect ActiveTrail to mailfloss
How to connect Autopilot to mailfloss
How to connect Customer.io to mailfloss
How to connect Mailigen to mailfloss
How to connect Remarkety to mailfloss
How to connect Iterable to mailfloss
How to connect DailyStory to mailfloss
How to connect Braze to mailfloss
How to connect multiple accounts from the same provider
How to disconnect an integration
Floss options for an email service provider
Use a Master List for faster flossing
Email verification Frequency Options
Email verification Action Options
How do I turn on/off automatic verification?
Add your blacklist/whitelist options
How to floss only a specific email list/segment/tag
How to use Custom Fields or Tags to Unsubscribe Contacts
What are the custom fields and tags that mailfloss updates and which ESPs support them?
Email verification Aggressiveness Options
What do category exclusions do?
Encharge email verification options using mailfloss
GoHighLevel email verification options using mailfloss
Ghost email verification options using mailfloss
Beehiiv email verification options using mailfloss
MailChimp email verification options using mailfloss
Keap email verification options using mailfloss
HubSpot email verification options using mailfloss
Ontraport email verification options using mailfloss
Drip email verification options using mailfloss
Kit email verification options using mailfloss
Constant Contact email verification options using mailfloss
Campaign Monitor email verification options using mailfloss
AWeber email verification options using mailfloss
ActiveCampaign email verification options using mailfloss
Sendlane email verification options
Klaviyo email verification options
Brevo email verification options
MailerLite email verification options
Moosend email verification options
Gist email verification options
GetResponse email verification options
Intercom email verification options
Emma email verification options
iContact email verification options
Sendpulse email verification options
Wishpond email verification options
Benchmark email verification options
Mautic email verification options
Campaigner email verification options
MailUp email verification options using mailfloss
VerticalResponse email verification options
ActiveTrail email verification options
Autopilot email verification options
Customer.io email verification options
Mailigen email verification options
Remarkety email verification options
Iterable email verification options
DailyStory email verification options
Braze email verification options
ClickFunnels email verification options using mailfloss
What does Normal aggressiveness do?
What does Aggressive aggressiveness do?
What does Custom Floss do?
Bulk import operations for connected integrations
[Action Option] Manually decide action on invalid emails
[Action Option] Auto-Unsubscribe invalid emails
[Action Option] Auto-Delete invalid emails
[Action Option] Auto-Update custom fields/tags of invalid emails
[Action Option] Do not modify emails
Floss options for files
How to upload and floss a spreadsheet
Can I upload multiple files at once?
How can I upload, enter, or import emails to mailfloss?
How do I do a one-time or one-off cleanup of a CSV file?
Flossing results and reports
How do I buy prepaid credits or purchase a subscription?
How do I export or download floss session results/reports?
How do I export all available flossed emails per integration?
How to permanently delete email addresses from mailfloss
How to append mailfloss results to an uploaded CSV file
How to merge spreadsheets using Google Sheets
How to merge spreadsheets using Microsoft Excel
Do you show analytics?
What's included in the verification report? What happened to the rest of the file data I uploaded?
Zapier Integration
Use mailfloss as a Zapier trigger
Use mailfloss as a Zapier action
Create a Zap - connect Zapier and mailfloss
Plans and Pricing
Pricings for Subscription plans, Subscription Add-Ons and Prepaid credits
How do I add more credits to my account?
Adding Additional User Seats
How do I add more features to my subscription?
Uploading Option Disabled During Free Trial
Do prepaid credits come with the same features as subscription plans?
What happens to my remaining subscription credits if I cancel my subscription?
Understanding Your Credits: Subscription and Prepaid
Understanding Prepaid Credits
Understanding Subscription Credits
Do you offer a free trial?
Do prepaid credits ever expire?
Do I need a credit card to sign up?
Can I change, downgrade or upgrade my plan at any time?
Can I cancel anytime?
Do you have an affiliate program?
Where do I find invoices?
How do I request a refund?
How to add a credit card
What forms of payment do you accept?
How do I cancel my subscription?
Which subscription plan should I choose?
Enterprise plans
How do I delete my account?
What happens if you cancel a free trial?
What is overage and how does it work?
What is Auto-refill and how does it work?
How to Request a Manual Invoice
Troubleshooting
Need Help? Here's How to Contact Us
Can I Change The Invoice Email Address?
Why were fewer emails verified than what I uploaded?
Integration Issues: API Key Permissions
Issues with Zoho CRM
Flossing stopped working, not flossing, not verifying, or didn't floss all emails
Can't connect an integration
High bounce rate after flossing
I exported my emails from my email service provider and uploaded it to mailfloss. Will it sync back to the ESP?
Flossing is slow or stuck
Yahoo and Hotmail detection limitations
I didn't receive my verification email, what do I do?
How to verify if the mailfloss custom properties were created in HubSpot
Understanding App Load Conditions and High Load Banner
Is Decay Protection overconsuming credits?
What happens if I cancel a batch verification? Why the process isn't completely stopped?
Feature: Typo Fixer
How do I get the typo fixer feature?
How does the typo feature work?
How can I tell if an email address typo was fixed?
I'm using the typo fixer. What if the suggested email address is already a subscriber, what happens when the typo fixer tries to fix the typo?
Typo fixer limitations
Handle custom fields and fixed typos: automated rules and exceptions
Feature: Instafloss
Enabling Instafloss for Real-Time Capabilities Across Integrations
Adding Instafloss as an Add-on
What does Instafloss do?
Instafloss delay recommendations
How to enable Instafloss for Encharge
How to enable Instafloss for Sendlane
How to enable Instafloss for Moosend
How to enable Instafloss for Gist
How to enable Instafloss for Wishpond
How to enable Instafloss for Campaigner
How to enable Instafloss for DailyStory
How to enable Instafloss for Klaviyo
How to enable Instafloss for Braze
How to enable Instafloss for AWeber
How to enable Instafloss for MailUp
How to enable Instafloss for Remarkety
How to enable Instafloss for Iterable
How to enable Instafloss for Customer.io
Instafloss for GetResponse tradeoff/warning
Understanding Discrepancies Between Kit and Instafloss
Migrate Iterable system webhook to workflow webhook for Instafloss
Feature: Autofloss
How to Autofloss a single list
What does Autofloss do?
Feature: Decay Protection
What does Decay Protection do?
How to set Decay Protection custom mode
Feature: Update Tags/Custom Fields
Campaigner Custom Fields Instructions
MailUp Custom Fields Instructions
DailyStory Custom Fields Instructions
Constant Contact custom field limitations
Benchmark custom field limitations
Feature: Javascript Widget
How to add the Javascript widget to your page
How to connect the JS widget to Convertful
How to connect the JS widget to GetResponse
How to connect the JS widget to Wisepops
How to connect the JS widget to Mailchimp
How to connect the JS widget to a plugin in WordPress
How to connect the JS widget to Sumo
How to install the Scripts n Styles plugin on WordPress
How to connect the JS widget to Hellobar
How to connect the JS widget to OptiMonk
How to connect the JS widget to Leadpages
How to connect the JS widget to Convertkit
How to connect the JS widget to Sleeknote
How to connect the JS widget to ClickFunnels
How to connect the JS Widget to InstaPages
How to connect the JS Widget to OptinMonster
Feature: Google Sheets Extension
How to install and use the mailfloss Google Sheets extension
Feature: Airtable Extension
How to install and use the mailfloss Airtable extension
Policies
Can mailfloss Limit Service to Servers in Specific Countries?
Anti-spam Policy
Data Retention Policy
Data Processing Agreement
Are you HIPAA compliant?
Are you Soc II compliant?
Where are your servers located?
What does it mean if an account is suspended, paused, under review, or banned?
Are you GDPR compliant?
Are you CCPA compliant?
Do you have a VAT?
How we encrypt and transmit data
Development
Do you have an API?
Do you support webhooks?
Generate an API Key
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