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Opera Mail: Features, Drawbacks, and 3 Great Alternatives

Posted by Alexis Dollé on August 5, 2020

Opera Mail alternatives

Alexis Dollé
Head of Growth

Published on August 5, 2020

Is Opera Mail the right email client for you?

We’ll try and help you answer that question in this article.

We’ve prepared an in-depth Opera Mail review. Additionally, we will also share three great alternatives you could explore instead.

Here’s what’s in store. You can click on the links below to jump to a particular section:

What Is Opera Mail?

Opera Mail Inbox

Opera Mail is a free email client developed by the team behind the well-known Opera web browser. It’s similar to what Thunderbird is to Mozilla Firefox.

The email client was initially offered as an integrated component of the Opera browser until 2013.

From 2013 onwards, it functioned as a stand-alone Opera software tool until it was discontinued. Although it is not actively supported anymore, you can still download Opera Mail from a few app store websites, so lets what this email client is like.

What Does Opera Mail Do?

Like many other email clients, it tries to give you a common space for all your email accounts. You’ll be able to access emails from multiple accounts and mailing lists in a single inbox — without having to log into each account individually.

This can save you a lot of time and effort when you’re dealing with a lot of emails on a daily basis!

The Key Features of Opera Mail

The email client boasts some helpful features that help elevate it over some other standard email clients. Here are a few of them:

Easy Organization

One of the calling cards is that it’s very easy to organize your emails and files. While you have the standard set of folders, such as All Mail, Spam, Drafts, and so on, you can also create a custom folder structure.

You’ll thus find it easy to categorize your emails based on your preferences.

Want to categorize emails that cover a particular project, such as sales or support? No problem! Just create a folder structure dedicated to it in Opera Mail, and you’re done.

The Opera Mail client can also categorize all your attachments into a separate folder structure to make it easier to access them.

For example, there’s a video folder to the left of your screen that can store any video-related attachments you’ve received so far.

This way, you won’t have to waste time searching for it next time.

Email Tabs

This allows you to open up emails in different tabs. Whenever you click the “open” button on a new email message, it opens up in another tab instead of popping up in the same window!

Therefore, you’ll be able to have multiple emails open in different tabs at the same time.

This can be useful when you’re trying to juggle emailing multiple people at the same time!

Quick Loading

One of the things the Opera Mail client does well is loading email messages.

Even though it’s a free email client, it manages to load your mailing lists and emails fairly quickly – even if they’re packed with attachments.

You won’t be wasting a lot of time waiting for your email client to load your emails if you’re using Opera!

Low Bandwidth Mode

Another cool feature is its low bandwidth mode.

Say you’re out and don’t have access to a high-speed internet connection. Or maybe you’re just trying to save some data, as your data plan may be expiring.

Either way, it offers you a low bandwidth mode to cut down how much data it uses.

This way, you can access an email message without having to worry about running out of data to watch that cute kitten video on Facebook!

It’s Completely Free

One of the chief reasons people turn to Opera Mail is that it’s completely free of cost.

There’s no sign-up fee, trial period, or pro version on offer. What you get on the free version is all the Opera Mail client can offer you – there are no paid additional features!

The Drawbacks of Opera Mail

While Opera is a good email client, it still has its flaws.

Our Opera Mail review will provide you with a few reasons you may want to explore other email clients too.

No Longer Supported

Opera Mail is no longer actively developed or supported — the last stable release was in 2016. Therefore, any issues you may face can’t be dealt with by the developer team.

Additionally, there’s no customer support to help you with any issues. So if you come across a bug, you’re on your own.

Dated UI

This stems from the fact that the client is no longer being developed.

As there have been no major updates for a while, the interface isn’t user-friendly and could use a rehaul.

It’s reminiscent of an old-school browser you’d find on Windows XP – not something you’d look for in a tool for these days.

Difficult Setup

Opera Mail reviews suggest that setting up a new account is difficult because of its inability to import data from most modern webmail clients when you set it up for the first time.

As a result, trying to import email contacts and folders from an email service provider like Gmail, Yahoo, or the Outlook/Exchange server may be a tedious process when setting up the Opera email client.

Lack of Features

As Opera is entirely free, you don’t get too many additional features with this email client.

You’re limited to opening and accessing your emails – that’s it.

You don’t have some helpful features like –

  • Attachment Reminders – to ensure you never forget to add an attachment to an email
  • In-Line Replies – to help you reply to questions in an email in a clean, organized format
  • Integrations – with chat accounts like Slack, WhatsApp, and Veeting Rooms to make your email client a communication hub 

Customer Ratings

Capterra – N/A

G2 Crowd – N/A

Three Great Alternatives to Opera Mail

Here are three great alternatives to Opera Mail to help you find the right email client for your needs.


Mailbird vs. Opera Mail review

Mailbird is one of the best email clients available today. It’s got everything you need from an email client and is continually building on its current lineup of features.

Here are a few features that elevate Mailbird over most other email clients when it comes to supercharging your email productivity.

1. Unified Inbox

One of Mailbird’s key features is its Unified Inbox.

With it, you’ll be able to access all your emails – from all your accounts – in one unified space!

Don’t worry about compatibility issues.

Mailbird can support most POP and IMAP accounts, such as Gmail, Yahoo, and Outlook. You’ll have no issues when it comes to the synchronization process in Mailbird.

Additionally, as Mailbird is a desktop email client, you’ll be able to do all this without having to log on to a web browser! You can access all your emails from the comfort of your own desktop.

Color Coding

Worried about losing track of which emails came from where in your unified inbox? Don’t be!

Mailbird allows you to assign colors to each of your email accounts to make it easy to identify which emails came from which account.

Account customization options in Mailbird

You will never have to worry about mixing up where emails came from!

2. Snooze Emails

Here’s a problem everyone has faced at some point in time.

You have a bunch of important unread emails to address, but also have tons of unimportant unread emails in the way. Annoying, right?

With Mailbird, you won’t have to worry about this ever again.

Mailbird can tuck away these unimportant emails from your inbox for the time being – allowing you to only see and tackle the priority emails.

You can choose how long these emails are snoozed for – it could be an hour, a day, or even a week.

Mailbird snooze feature

Once the time’s up (and you’ve addressed your priority emails), these snoozed emails pop back into your inbox where you can address them easily.

Want to access one of these snoozed emails before that specified time period is up? No problem!

Snoozed emails are stored in a designated Snooze folder that you can access at any time!

3. In-Line Replies

Another great Mailbird feature is the in-line reply option. Here’s a situation where it comes in handy.

You’ve received an email from a coworker where they’ve asked you a bunch of questions. You go through them and draft a reply email, only to find out you’ve overlooked an important question by accident.

Not great, right?

To make sure this doesn’t happen, Mailbird gives you the ability to respond to a question in an email right below it.

The Opera Mail client lacks in-line replies

As this format is clearly organized, you won’t forget to respond to a question.

Additionally, the recipient is going to find it far easier to see your responses, as they’re not all bundled together in a follow-up email.

Mailbird also offers you the ability to add your name and color code your in-line replies to further personalize the process!

4. Undo Send

Mailbird has an in-built Unsend email feature that will allow you to recall an email you’ve just sent out.

The best part about this is that Mailbird can unsend an email sent from an email account that originally might not support this feature!

So in case you’re using Yahoo Mail or Microsoft Outlook (which don’t have in-built unsend features), you’ll still be able to unsend emails easily!

Mailbird can give you a leeway period of up to 30 seconds to unsend any email! This is usually more than enough time for you to decide if something was wrong with your email and recall it.

Mailbird’s “Undo send” feature

Once you recall the email, it’ll pop up in a separate composer window where you can make the changes immediately if you want. Alternatively, you can access it from your Drafts folder too.

Mailbird: unsend email feature

5. Attachment Reminders

With Mailbird’s attachment reminder feature, you won’t forget to add an attachment to an email again.

How does this work?

Mailbird can detect whether or not an email needs to have a file sent with it based on what you’ve mentioned in the email.

For example, if you mention the word “attach” in your email but clicked “send” without attaching anything, here’s what’ll show up.

The Opera Mail client lacks attachment reminders

You can now attach the file you forgot!

Why Mailbird Is Better Than Opera Mail

What makes Mailbird an upgrade on Opera’s email client?

Here are a few reasons –

1. Constant Updates

Mailbird’s developer team is hard at work adding any new features you’ve requested and ironing out any sneaky bugs that may have crept in.

It’s constantly being developed, so you can rest assured that any query or concern you have will be addressed quickly.

2. Tons of Features

As you’ve seen, Mailbird has tons of unique, helpful features that can assist you in more ways than one.

As a result, with Mailbird you’re getting far more than an email client – you’re getting a full-fledged email productivity tool.

Not to mention, you get a near-endless list of integrations with chat accounts like WhatsApp and calendar apps like Google Calendar to make Mailbird a core part of your daily activities.

For a list of all the integrations, click here.

3. Easy Setup

Mailbird has one of the easiest setups on the market today. You won’t have any difficulty importing details from your other email accounts.

As it’s fully compatible with most POP and IMAP accounts, Mailbird does most of the configuring automatically to make the whole process a breeze!

In fact, after you download Mailbird, you’ll be up and running after a quick click of a button or two!

If you want to know more about how easy it is to set up Mailbird, click here.


  • Can add almost any POP and IMAP account instantly, such as Gmail, Yahoo, and Outlook/the Microsoft Exchange server
  • Automatic incoming server setting detection for easy setup that takes only a few button clicks
  • Highly customizable user interface with the ability to change themes and layouts
  • Large selection of third-party integrations with chat accounts like WhatsApp and calendar apps like Google Calendar for added functionality
  • Can handle .pst file format and mail mbox format for data imports to ensure you won’t need to use a file converter tool
  • Helpful features like Snooze Emails, Attachment Reminders, In-Line Replies, and Tagging
  • Has the ability to sync, merge, and link contacts from different email providers easily


  • Can only support Windows OS – although there is work underway on a portable app for mobile devices.

Customer Ratings

Capterra – 4.5/5 (262 reviews)

G2 Crowd – 4/5 (52 reviews)

Try Mailbird, the Best Opera Mail Alternative!

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eM Client

Opera Mail client vs eM Client

eM Client is another good desktop email client to try out.

Let’s take a look at why it’s a good Opera Mail alternative.

1. Contact Management

eM Client makes contact management a piece of cake.

You have complete freedom in organizing your contacts and mailing lists. You can categorize them by a variety of fields – ranging from hobbies to family members!

You can also select how you want to view all your contacts in your address book. You have a standard business card view or can opt for a custom view.

With the custom view option, you can select how you view each of your contacts in the address book – from how their details look to what’s included!

You could choose to keep the picture at the forefront of their contact or their name and address – the choice is up to you.

This way, your contacts are always ready for you – in the way you want them to be.

2. Easy Setup

Another good eM Client feature is its easy setup due to its ability to analyze your incoming server settings in no time.

Like Mailbird, it can support most POP and IMAP accounts, which makes onboarding a breeze. It’ll automatically detect your mail server settings and connect with all your email accounts without you having to do much.

It can also import all the data you need quickly to ensure you’re up and running in no time after you download it!

3. Spell Checker

eM Client offers you an in-built spell checker to ensure you’re not making any spelling mistakes when crafting your emails.

4. Integrations

The eM Client program has a useful set of integrations, such as Facebook Chat and Jabber, to make it more than just a typical email client.

You’ll be able to handle a lot of daily communications from within the email client itself!

The Drawbacks of eM Client

Like many email clients, eM Client is good, but not perfect.

Here are a few issues you may face if you choose eM Client as your go-to email client. 

A) UI Needs Some Work

eM Client’s standard user interface isn’t bad by any measure, but it is very limited when it comes to customizability.

You get a standard three-pane interface that gets the job done, but you’re pretty much stuck with it – whether you like it or not.

eM Client has recently introduced a dark theme and some email header templates, which are great, but it still has work to do when it comes to being truly customizable like Mailbird.

If you want to find out more about Mailbird’s ample customization options, click here.

B) Syncing Issues

The eM Client program tends to suffer from occasional syncing issues.

One of the common issues people face is emails being deleted from backups automatically. While eM Client tries to stay on top of most of these issues, they could pose a potential problem for you.


  • Smooth synchronization process with support for most POP and IMAP accounts, like Gmail, Yahoo, and Outlook
  • Simple setup with automatic mail server SMTP identification
  • Good file management with both .pst file format and mail mbox support so you don’t need a converter tool
  • Can support Windows OS and Mac OS – so you’ll be able to use Mac Mail here too


  • User interface lacks customizability
  • Can be buggy at times
  • Software tends to be RAM-heavy
  • Viewing emails in plain text format (no links) can cause problems

Customer Ratings

G2 Crowd – 4.4/5 (7 reviews)

Capterra – 4/5 (33 reviews)

Claws Mail

Opera Mail client vs Claws Mail

Claws Mail is another good Opera Mail alternative for you.

It has a couple of neat features that really make it a good application. Let’s take a closer look at them. 

1. Open-Source Nature

One of the coolest features of the Claws Mail program is that it’s entirely based on an open-sourced framework.

In fact, it has the distinction of being one of a select few email clients based on such a framework.

The main benefit of an open-sourced software is that you have the ability to add custom integrations, such as an RSS feed reader. As a result, when it comes to the features list, you can customize as per your needs!

2. Filtering Capabilities

Claws Mail also does well when it comes to filtering your emails.

Categorizing your emails is super easy, as you have the ability to add custom filters to categorize your mail based on fields like content and sender.

By allowing you to categorize your emails extensively, it’s easy to sort your emails and maintain a tidy inbox.

3. Reliability

One of the best things about Claws Mail is its speed and reliability.

As it’s open-sourced and constantly developed, any nagging issues are dealt with swiftly to ensure it’s running to the best of its abilities.

As a result, Claws Mail tends to be a very reliable email client with very few bugs.

4. Completely Free

Another cool thing about Claws Mail is that, just like Opera’s email client, it’s completely free.

There’s no premium version with additional features – you get all the functionality you need with its free variant!

The Drawbacks of Claws Mail

A) Complicated Setup

One of the drawbacks of having open-sourced software is that it can be challenging to work with – especially if you’re not well-versed in programming.

As a result, configuring Claws Mail can be a hassle for beginners, as there’s no automatic detection of POP and IMAP email servers when you download the application.

You’ll have to manually adjust these mail server settings and will have some trouble importing data from Gmail, Yahoo, and Outlook/Exchange server as a result.

B) Dated UI

Another issue with Claws Mail is that its interface can look a bit dated.

It’s not the most user-friendly layout, as accessing settings and features can take a bit of work.

There are also minimal customization options available for changing how it looks, so you’re pretty much stuck with what you get.


  • Open-source platform allows you to add as many add-ons as you want
  • Can support RSS feeds and import via the mail mbox and .pst file format to spare you the need for a converter tool
  • Known to be very reliable and fast
  • Good filtering capabilities
  • Frequent updates


  • Application interface isn’t very customizable
  • Configuring settings during initial setup is difficult with synchronization process issues
  • No automatic incoming server detection for POP and IMAP accounts
  • Only available on Windows OS and Linux – not platforms like Apple Mac OS X

Customer Ratings

G2 Crowd – N/A

Capterra – N/A


In conclusion, Opera Mail has some good features — but there are far better, more modern email clients for you to choose from.

You could opt for the all-around functionality of Mailbird, the sorting capabilities of eM Client, or the open-sourced nature of Claws Mail.

The choice is yours!

Why not sign up for a free Mailbird trial in the meantime to see how it can help supercharge your email productivity?

Get Mailbird and Check the Most Effective Way to Manage Your Email Accounts!

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FAQs about Opera Mail

Is Opera Mail still available?

Yes, you can download Opera Mail from a few app store websites on the Internet, even though it is not actively developed or supported anymore. However, there are several great alternatives to Opera Mail, including Mailbird.

Mailbird is an awesome email client for Windows. One of its most notable features is the functionality for managing multiple accounts that includes personalization options, advanced search, filters, and a folder system.

What happened to Opera Mail?

Opera Mail received its last update in 2016 and was discontinued after that. This email client can still be downloaded from the Internet, however it is no longer actively supported. This means that if you encounter any issues, the developer team won’t be able to help you out.

If you want an email client that is continuously supported and upgraded, try out Mailbird.

What is the best email app?

There are many excellent email clients available. And, according to customer reviews, Mailbird is one of the best currently available. Unlike other email apps, it comes with unique features that make managing emails a breeze, including:

Unified Inbox —allows you to merge multiple email accounts into one
Snooze – postpone receiving selected emails for a period of time
In-line replies —ensure you respond to every line in the email

And much more!

Does Windows 10 have an email program?

Windows 10 features a built-in email app that can be used to access any email account (such as Gmail,, Yahoo, and many others). However, this built-in email client has limited features. For the ultimate email experience, we recommend downloading Mailbird.

Is Mailbird really free?

The Mailbird email client offers a free trial version. But, in order to continue using the client, it is necessary to purchase a license. Mailbird offers a 14-day money-back guarantee, in case you don’t like the client.

Alexis Dollé
Head of Growth

Published on August 5, 2020