• The Warmup Inbox Team

8 Best Email Warmup Tools (That Aren’t Garbage)

Any experienced email marketer knows that for a successful cold email campaign, you need to warm up your inbox first. Let's take a look at the best email warmup tools that will help you with that.



What is an email warmup tool?


The email warmup tool is a service that improves your email deliverability by preparing the inbox for future email campaigns.


Email warmup consists of various actions (e.g. sending emails, opening and replying to messages, etc.) that gradually “warm up” the account so the spam filters will consider it reliable and trustworthy.


Best email warm up tools


Here is a list of the best email warm-up tools in 2022:

  1. Warmup Inbox

  2. Mailwarm

  3. GMass

  4. Mailreach

  5. Lemwarm

  6. Warm Up Your Email

  7. Folderly

Let's take a look at each of them more closely


1. Warmup Inbox

Warmup Inbox Tool

Warmup Inbox is an email warmup service that can help you increase the deliverability of your email campaigns and improve the reputation of your email account over time.


The tool provides a network of more than 20,000 real inboxes that your email account can utilize for the warmup process.


Warmup Inbox is pretty easy and straightforward to use - after you sync your inbox with the platform, the tool will start to interact and engage with your account.


This process includes tasks such as replying to your emails, marking them as important, pulling them out from the spam folder


Besides the basic warming up process, the Warmup Inbox also offers many other important features, such as:


  • monitoring the sender's reputation of your inbox

  • alerting you about any issues with your reputation

  • checking the spam rate of your emails

  • checking whether your email is present on any blacklist


The set-up of the email account is pretty easy and straightforward - you can simply sync your inbox into the Warmup-Inbox platform and the tool will automatically start communicating with its network of real users.


Warmup Inbox works with all the major providers, such as Gmail, Yahoo!, Outlook, Zoho and many many others.


A nice benefit is the excellent support of this tool - it consists of specialists in the warmup field that can help you whether you are a complete newbie or an experienced email marketer.


Warmup Inbox offers its services for a very fair price: only $9 per inbox/month. Make sure to try the free trial version for 7 days (no credit card needed).



2. Mailwarm

Mailwarm Tool

Mailwarm is a pretty easy and straightforward tool to use: Once you set up your email account for the service, Mailwarm will simply start sending and replying to your emails and gradually warm up your account.


One of the nice features of this tool is that you can set up your own schedule of warmup and therefore have full control over the time when the inboxes should start sending and replying to emails.


Besides the warmup schedule, Mailwarm also performs other actions within the inbox such as retrieving emails from the spam folder, marking emails as “important” and opening up the incoming emails.


Although Mailwarm is a pretty nice and neat warmup tool, it can get a little bit expensive:


The “Starter” package for 1 email account costs $69 per month and for the 10 registered accounts (in the “Scale package") it can get up to $479/month.


3. GMass

GMass Tool

GMass is a service that, among other interesting things, also provides a decent email warmup tool.


GMass actually offers 8 useful tools that are all heavily focused on Gmail (since the company wants to serve as an all-in-one solution for the Gmail provider).


You can monitor the reputation of your domain, check out statistics about your opening rate or even start a massive cold email campaign.


However, this huge email conglomerate has its limitations - since the GMass is all about the Gmail services, it might not work so well for people who need to warm up their email accounts for other providers.


GMass pricing starts at $19.95/month (Standard) and can get up to the 49,95$/month (Enterprise).


4. Mailreach

Mailreach Tool

Mailreach is a standalone email warmup tool that was designed by a French company in 2020.


The tool is very easy to use - once your inbox is set up and connected to Mailreach, it will automatically start sending and replying to emails.


Besides the generic warmup, it also provides a few interesting features such as:

  • testing the emails and evaluating your spam score

  • checking your account in blacklists

  • useful deliverability reports

A small downside (at least to some people) is that Mailreach generates automatic emails and replies that are not created by real people (so they might seem a little suspicious to ESPs sometimes).


On the other hand, this tool comes with a reasonable price: it starts at $25/inbox.


You can also get custom pricing in the case you would like to warm up a huge number of email accounts.


5. Lemwarm



Lemwarm is a well-established (though a little bit old-school) email warmup tool - it was the first email warmup service that ever appeared on the market.


Lemwarm allows you to control the exact number of warmup emails that you would like to send from your inbox per day.


Once you set up your account and start the warming process, the tool will automatically start sending emails on your behalf within its inbox network (and get replies by real people).


Although this might seem like a nice feature, it can come costly: Lemwarm pricing starts at $25/month for 1 inbox.


7. Warm Up Your Email

Warm Up Your Email Tool

Warm Up Your Email is an email warmup tool owned by Mailshake.


The tool itself offers standard features that you can find within any other warm-up service - it is capable to send and reply to emails automatically, mark them as “important” or just getting them out of the spam folder.


It can also provide the user a clear spam score which indicates how often the emails ended up in the spam folder or how much has your inbox already “warmed up”.


One of the nice features of this tool is that the created emails within its network are made by real people.


Besides the email engagement, Warm Up Your Email is compatible with various major ESPs (e.g. Gmail, Outlook, ZohoMail, or Sengrid).


Warm Up Your Email is a paid tool that starts with $29/month per inbox.


8. Folderly

Folderly Tool

Folderly is an AI-powered email deliverability service that focuses on more than just warming up your email account.


It uses machine-learning processes that help email inboxes to behave like a real human - creating and replying to emails with (somehow) meaningful content, opening, marking and interacting with messages, etc.


Besides the generic warm-up process, Folderly also offers to run huge email outreaches and email analyses for companies that need more than just prepared inboxes.


Unfortunately, this interesting piece of software is costly: The pricing starts at $49/month and the prices can get significantly higher if you want to have more premium features.


Why is an email warmup tool important?


Email warm up tool saves a lot of time - the tool will automatically warm up your inbox over time so you can use it for your email campaigns.


Although you can warm up your inbox manually, it takes a lot of time and effort. It requires you to use the account, send emails, and reply to messages on a daily basis and for a long time.


Besides the warm up process, it is important to understand that your email account won't stay “warmed up” forever - if the inbox is not very active, it will gradually start having more and more deliverability issues.


Email warmup tools solve both of these problems as they can automatically warm up your inboxes and keep them constantly prepared whenever you will need to start email campaigns or outreaches.


How long should you use an email warmup tool?


The short answer - it depends on your goals.


It is important to understand that email warmup is a never-ending process - the longer you are warming up your inbox, the more reputable it will be over time …


… and vice versa - the longer you let your inbox be inactive, the more reputation it will lose.


Once your email account is warmed up for your campaigns, it is recommended to keep it synced with the warmup tool for as long as you are planning to use that inbox - whether it is now or in the future.




Start landing in more inboxes. 
Use Warmup Inbox to improve your sender reputation and increase your deliverability.

No credit card needed!