Home Help Center Email Marketing Service Email Campaigns Validating contacts before sending: Email Checker explained

Quick Setup Guide

How to start and complete onboarding Tracking your onboarding progress: a step-by-step guide Claiming your onboarding reward and using the coupon code What happens if you skip or end onboarding early

Email & contact metrics Understanding email performance metrics: Sent, Deliverability, Open rate, Click rate Why the number of sent emails doesn't match your contact list Working with recent lists

Creating an account on Sendigram Recovering your Sendigram account password Changing your Sendigram password Changing your account login (email address) Deleting your account

Plans differences Email Plan Guide Purchasing & renewing a package Switching between different plans Unused package credits Using a discount coupon Refunds

Understanding domain statuses: Verified, Processing, Unverified Managing sending domains Why DNS records matter for email deliverability Adding & verifying DNS records (SPF, DKIM, DMARC, MX) Adding GoDaddy domain Adding Cloudflare domain Adding Shopify domain Adding Squarespace domain Adding Bluehost, Network Solutions or Domain.com domain Understanding Your Domain Health Checking & resolving domain blacklist issues Managing sender email addresses Sender address requirements and best practices What to do if a sender address is in use by active campaigns Understanding shared vs. dedicated IP addresses Increasing sending limits with multiple domains Connecting or disconnecting a domain to/from an IP address Buying & managing dedicated IP addresses

User roles & statuses User status explained: active and deleted users How to add a new user: user invitations and registration Managing user permissions and access rights Default permissions for additional users Deleting users Transferring admin rights to another user What happens after admin rights are transferred? What happens when permissions are disabled for a user?

Adding & editing contacts How to create a contact How to work with contact list Technical Requirements for Your Contact List Fields Adjusting contact list settings How to Create a Contact Group How to Work with a Contact Group How to Create a Segment How to work with a segment Creating & managing groups Managing contact attributes Adding and managing custom fields Adding and managing tags

How to create your first email campaign Campaign card overview: General, Contacts, Email template, Scheduler Naming and renaming campaigns Understanding campaign statuses: Scheduled, Active, Paused, Completed Saving progress and navigating between campaign blocks How to set up the sender email address and name Managing reply-to addresses in campaigns Selecting and managing IP addresses for sending How to select recipients: Contacts, Groups, Segments Excluding contacts and groups from a campaign Understanding contact limits and subscription packages What to do if you exceed your email sending limit Validating contacts before sending: Email Checker explained Choosing and editing email templates for campaigns Uploading custom HTML Writing effective subjects and preheaders Personalizing Your Subject Lines and Preheaders Adding and managing UTM parameters Understanding placeholders in custom HTML templates What happens to your templates when you edit them outside of campaigns and automations? Scheduling campaigns: send now or later Setting up delivery dates, times, and days of the week How to calculate and adjust sending volume over time Managing dedicated IP expiration and renewal Understanding autowarmup in Sendigram How to preview and test your campaign Managing and editing your test email group Using the campaign calendar: viewing, filtering, and creating campaigns Understanding campaign statuses: Active, Scheduled, Completed Viewing campaign details and quick actions from the calendar Navigating the campaign list: columns and filters Searching and filtering campaigns by name, date, and status Campaign card: overview, timeline, and audience How to pause, continue, or delete a campaign Understanding campaign statuses: Scheduled, Active, Paused, Completed Campaign performance & analytics Using heatmaps to analyze email engagement

General email performance Comparing campaign variants Ratings and trends Comparing your results with Industry benchmarks How multilevel sorting works Monitoring your email marketing performance

What is Sendigram Email Builder How to create a new template How to manage your templates list Template tags How to create an email with the AI Email Builder

Automations Overview Creating a New Automation Understanding Automation Templates Managing Your Automations List Automation Builder: Overview and Navigation Setting Up Automation Details (Name, Description, Tags) Working with Triggers Working with Actions Managing Elements in the Workflow Canvas Running and Pausing Automations Automation Settings Panel Managing Emails and Templates Inside Automations Contact Management Inside Automations Sending limits for automations

WordPress: Getting Started Shopify

Validating contacts before sending: Email Checker explained

A clean, verified contact list is essential for high deliverability. Sending to invalid or risky addresses increases bounces, damages your domain reputation, and can land your emails in spam. To help prevent this, Sendigram provides the built-in Email Checker.

1. What Is the Email Checker?

The Email Checker is a built-in validation tool that automatically checks the recipients of every campaign before it is sent.
It identifies invalid, misspelled, inactive, or disposable addresses.
It reduces bounce rates and protects your sender reputation.

2. When It Runs

Before every campaign – the check runs automatically when a campaign is sent. You do not need to start it. In the Contacts block of a campaign you will see the note "All contacts are checked for validity before sending by Email Checker".

3. What the Check Does

Select the recipients in the Contacts block of your campaign as usual.
When the campaign is launched, Sendigram checks every address automatically. The check cannot be started or stopped manually.
Addresses that do not pass the check are skipped. This is why the number of sent emails can be lower than the number of contacts in your list.

4. Benefits of Using the Email Checker

Improves deliverability – fewer bounces mean more inbox placement.
Protects your domain reputation – ISPs trust verified senders.
Saves money – don’t waste email quota on undeliverable addresses.
Boosts engagement – clean lists mean more active, real subscribers.

5. Best Practices

Import only addresses collected with consent. Invalid addresses are filtered out automatically, but cleaner data means fewer skipped emails.
Regularly review your groups and remove contacts who have been inactive for a long time.
Suppress or delete invalid addresses immediately.

6. Compliance Note

Validating contacts does not override opt-in requirements.
Always collect emails with consent to remain GDPR and CAN-SPAM compliant.

Tip: Think of Email Checker as your spam filter shield — it keeps your lists clean and helps every campaign perform better.

Still have questions?