Email Auto-Reply and Filtering Plugins That Work With Domain Accounts

Phishing is one of the most popular types of cybercrime, with an estimated 3.4 billion spam emails sent each day.  Given that by the end of 2025, the number of emails sent and received globally is estimated to reach 376.4 billion per day, the number of phishing attacks per day is clearly cause for concern.

Email auto-replies allow you to send an automated, predefined message as a response to new emails. On the other hand, email filtering sets rules to process incoming emails based on multiple criteria automatically.

Considering the role of each, using email filtering tools and auto-reply tools with your domain accounts is important. In this article, we will take you through some of the best plugins that you should consider.

5 Top Email Filtering Tools and Auto-Reply Plugins

Email filtering tools help in moving emails from a specific sender to their designated folder. They mark emails containing certain keywords as read, forward emails with a specific subject line to another email address, and even delete certain emails automatically.

Auto-reply plugins, on the other hand, help you inform senders when you will be back in the office. They can also acknowledge that you have received their email and provide any necessary information.

1. Email Security Services

Email Security Services protects your email inbox from viruses, malware, spam, and other threats. With easy spam management, automatic spam filtering, continuous updates to keep you protected, and blocking of email viruses and malware.

Additionally, it uses three-layer virus blocking, decompression of archives and file type blocking, DDoS attack protection, and anti-spoofing features that prevent forged sender addresses on unsolicited addresses. Thus, it helps prevent business downtime while mitigating threats against your business’s productivity and resources.

2. Gmail Add-Ons

Gmail comes with add-ons like Auto Reply Pro and a vacation responder. Auto reply pro is a Google Workspace add-on that offers features like follow-up sequences and out-of-office notifications.

You can even use it to set up responses for different senders, helping you save considerable time. On the other hand, its vacation responder will let you send an automatic response to everyone who emails you during a certain time period.

Additionally, Gmail comes with an in-built email filtering tool that uses users’ feedback and machine learning tools to identify and block unwanted emails. In fact, by analysing various signals, IP address characteristics, domain details, user input, and sender authentication, it has become accurate in detecting and preventing spam and phishing attempts.

3. Microsoft Outlook and Defender for Office 365

This Microsoft plugin comes with built-in features for facilitating automatic replies either for a specific time period or indefinitely. All that you will need to do is select “automatic replies” and set up its settings as per your requirements.

Microsoft Outlook also offers email filtering tools that will let you identify and block junk emails. Additionally, it will also let you create custom rules to organise and manage your emails, thereby automatically moving your emails to their designated folders.

In fact, you can even search for emails that fall under specific criteria. This search is not limited to only filtered emails but also extends to flagged emails and emails from specific senders. Microsoft Defender for Office 365 takes these email filtering tools a step forward by offering AI-powered threat protection and real-time reports.

4. SpamTitan

The email security provided by SpamTitan is one of the best email filtering tools out there because it will protect your domain not only from spam emails but also from ransomware, phishing attacks, suspicious URLs, and viruses.

While blocking 99.9% of the threats entering your system, it also gives double antivirus protection with the help of Bitdefender and Clam AV engines. Additionally, it helps scan your inbound and outbound emails to prevent phishing attempts, ensure data security, and avoid blacklisting.

5. Mimecast

As an email filtering tool, Mimecast is popular because of its protection system against spam, targeted attacks, impersonation attacks, and phishing attacks. It also detects malicious links, QR codes, and attachments, and is easy to deploy.

Additionally, it also offers inspection of outbound and inbound emails, which, when integrated with its features like URL rewriting, sandboxing, and static file analysis, offers comprehensive protection for your emails.

Manage, Secure, and Automate Emails

Email filtering tools have become a necessity of the hour because of their protection against spam and phishing attempts, preventing malicious emails from reaching your inbox. This thus helps prevent security breaches and data loss.

In contrast, email auto-reply plugins assist in responding to senders during a set time period while you are unavailable.

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