to deploy confirmation mails on account changes.

Allows you to send confirmation emails to your subscribers on the mailing list, You can ensure that the email exists. It guarantees you to collect email addresses more qualitatively.

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No credit card required

Verify and Authenticate with Double Opt-In

Keep your subscribers’ information secure and safeguard every change they request.

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ironclad permissions

Ironclad Permissions

Be 100% sure about the owner of the email person to avoid sending sensitive information to the wrong accounts.

better sender reputation

Better Sender Reputation

Increase your sender’s reputation by identifying and eliminating spam emails and malicious signups.

gdpr consent

GDPR Consent

Have crystal clear consent of every user under GDPR to have an authentic database of customers.

subscriber management

Subscriber Management

Keep your subscriber’s database always updated with authentic users with the help of our tools.

What is Double Opt-In?

Double Opt-in is a business tool that works when someone subscribes or signs up to your email marketing list. It sends a confirmation mail which authenticates the owner of the email resulting in a list of organic users. It also helps to eliminate spams and malicious users who signed up to avail your promotional offers from bots etc.

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Explore More Features

Here are the additional features to look at

Explore More Features

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What our customers say

I chose 500apps because of their value and incredible superior customer service. They really care about small-to-medium sized organizations like ours, whether you're very CRM experienced or lightly so. Every business needs a CRM these days. Compared to HubSpot or Fusion Marketing, they really present a better value and are quite robust yet simple to use. Very pleased!

I love 500apps. It's a perfect solution for startups. The price is right and the system does all I need it to. I had a small issue and called the customer service line. I was really impressed being able to speak with the team all the way from Australia. They resolved my issue immediately and were very nice to deal with. I highly recommend this solution. 500apps is excellent for startups who can't afford the high prices of alternative solutions out there.

500apps is a pretty compressive system for a good price. Plenty of integrations. Sales, marketing and help desk automation. I love that it integrates with IMAP and the chrome widget is brilliant for pulling in LinkedIn data. I've found the customer service incredibly responsive. These guys really care about their reputation.

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