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Email Delivery, Access Links & Validation Explained

Judi Zietsman avatar
Written by Judi Zietsman
Updated over 2 months ago

Quick Summary: This article explains how email delivery works in the app, why access links may not arrive, what causes expiry, and how email validation protects accounts. You will learn what to expect when new users are added, how password reset emails behave, and how to handle situations where an address is flagged as invalid.

Why This Matters

Login and email problems can be frustrating as they prevent users from accessing the app. Whether it's a new user who can't log in for the first time or an existing user who is locked out, these issues can disrupt your workflow. This guide explains the causes of these problems so you can get back to work faster.


Common Login and Email Issues

Email Delivery Problems

If a user is expecting an email from Netstock (such as a new user invitation or a password reset) and it hasn't arrived, the cause is often straightforward.

Common reasons include:

  • The email address being incorrect in the app.

  • The email being diverted to a spam or junk folder.

  • The company’s email server blocking or quarantining the message.

➜ For more on this topic, read: How To: Troubleshoot Email Delivery Problems


Expired Access Links

For security reasons, the unique links sent in new user invitations and password reset emails automatically expire after 24 hours.

A link will also become invalid if a newer password reset email has been sent for the same user, as only the latest link remains valid.


If a link has expired, simply request a new one to regain access.

➜ For more on this topic, read: How To: Handle an Expired Access Link


"Invalid Email Address" Message

When creating or editing a user, the app checks the email address format to help prevent typos.


In rare cases, a valid address might still be flagged as invalid, usually due to a temporary connectivity or validation issue.


If you are certain the address is correct, select the provided checkbox to bypass this validation and proceed.

➜ For more on this topic, read: How To: Bypass an "Invalid Email Address" Message


How To Troubleshoot Email Delivery Issues


How To Handle an Expired Access Link


How To Bypass an "Invalid Email Address" Message


⚠️ Watchouts

  • Link expiry: Access links expire after 24 hours and must be regenerated if unused.

  • Single access link rule: Only the most recently generated link works. Older links cannot be reused.

  • Email flagged incorrectly: An “Invalid email address” message does not always indicate a faulty address.


💡 Tips

  • Fast recovery: If a link expires, use Forgot your password? rather than waiting for admin intervention.

  • Delivery troubleshooting: Spam folders and IT filters are the most common delivery blockers.


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