If emails sent from your event are not reaching recipients, there can be several possible reasons. Email delivery depends on multiple external factors including recipient email providers, corporate security systems, sender reputation, domain authentication, and email template configuration.
Based on common issues encountered across events, this guide outlines the most frequent reasons emails may not be delivered and what you can do to troubleshoot them.
Eventify supports two email sending options:
noreply@eventify.io)Using your own SMTP allows emails to be sent directly from your domain and provides greater control over authentication, sender reputation, and whitelisting.
One of the most common reasons for email delivery failure is an incorrect or inactive email address.
The receiving mail server rejects the message immediately.
If the recipient’s mailbox storage is full, their email server may temporarily reject incoming messages.
Emails may bounce with messages such as:
The recipient will need to clear space in their mailbox before receiving new emails.
Sometimes the email is successfully delivered but placed in the spam or junk folder.
Many corporate, government, and enterprise email systems use advanced security filters.
These systems can block emails before they reach the user’s mailbox.
The recipient’s IT team may need to whitelist:
If using Eventify SMTP, they may need to allow emails from:
noreply@eventify.io
For organizations with strict IT policies, sending emails using your own domain through custom SMTP can make whitelisting easier.
Another issue sometimes reported is that screenshots or images included in email templates do not appear in certain email providers (especially Gmail).
Email providers such as Gmail only display images that are hosted on publicly accessible secure URLs.
When adding images to email templates:
Example of a correct image reference:
https://yourdomain.com/images/event-screenshot.png
When sending emails using your own domain, authentication is critical for successful delivery.
Most email providers require these DNS records:
If you are using custom SMTP, ensure these records are properly configured with your email provider.
Email providers monitor the reputation of sending domains and IP addresses.
Poor reputation can affect whether emails are accepted or filtered.
Using your own SMTP allows you to build and maintain your domain’s reputation independently.
Email providers such as Gmail, Outlook, and Yahoo sometimes limit how many emails they accept from a sender within a short time period.
Most email providers limit message size.
Emails with large attachments may be rejected.
Eventify provides two options for sending emails.
However, since it uses shared sending infrastructure, some corporate networks may apply stricter filtering.
Using your own SMTP allows you to:
This is often preferred for events with enterprise, corporate, or government attendees.
If emails are still not being delivered, please share:
This information will help our team review delivery logs and assist further.