𝗦𝘁𝗼𝗽 𝗙𝗮𝗸𝗲 𝗦𝗶𝗴𝗻𝘂𝗽𝘀 𝗮𝗻𝗱 𝗧𝗿𝗶𝗮𝗹 𝗔𝗯𝘂𝘀𝗲 𝗶𝗻 𝗬𝗼𝘂𝗿 𝗦𝗮𝗮𝗦
Fake signups destroy your SaaS growth.
Users create accounts with disposable or fake emails to exploit free trials. This causes four major problems:
- Lost revenue from users who never convert.
- Damaged email deliverability due to high bounce rates.
- Corrupted product analytics and fake conversion metrics.
- Higher infrastructure costs from bot or fake user activity.
Standard form validation only checks if an email looks correct. It does not check if the email actually works.
Email verification at signup is your best defense. It works by performing these steps in real-time:
- Syntax check to ensure the format is right.
- Domain check to confirm the domain exists.
- Disposable detection to block temporary email providers.
- SMTP verification to confirm the mailbox is active.
You can implement this in three ways:
Hard Block: Reject invalid or disposable emails immediately. Use this for high-value trials with high compute costs.
Soft Gate: Show a prompt asking users to confirm their email. Use this for consumer products where you want low friction.
Flag and Review: Allow the signup but flag the account for manual review. Use this for enterprise products with sales teams.
Always implement verification on both the frontend and the backend. Users can bypass frontend checks, so your backend must validate every request.
The goal is not just to stop fraud. It is to ensure your data is accurate. When you remove fake accounts, your activation and conversion metrics finally show the truth.
Optional learning community: https://t.me/GyaanSetuAi