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About

GrowZen is an all-in-one cold email OS for growth marketers, combining lead intelligence, multi-Gmail and SMTP sending, campaign management, warmup, verification, mail tracking, and real-time analytics in one platform. It is powered by Zen, a business-aware assistant that understands the user’s business and supports outreach workflows across scraping, verification, campaign execution, inbox management, copy creation, market research, and optimization. GrowZen includes native lead intelligence, multi-source scraping from maps, search, and websites, a 3-layer email verification system covering syntax, MX, and DMARC, and multi-account sending with inbox rotation, smart follow-ups, warmup health monitoring, and safe outreach limits. Its desktop infrastructure is session-stable and built as a native app rather than only a browser extension, with encrypted credential storage, local data encryption, multi-profile isolation, and automation running on the user’s machine.

About

TrulyInbox’s warm-up sends emails like a real human, one at a time and at varying intervals for natural interaction with your inbox for a high Sender’s Reputation. You can increase your email frequency gradually as your Sender’s Reputation improves, helping to ensure that your emails land in the right inbox and avoid being marked as spam. TrulyInbox’s deliverability score lets you track your inbox reputation and deliverability rate, allowing you to keep an eye on your sending pattern. Anyone who sends cold emails for a wide range of use cases, such as marketing, and lead generation purposes. Outreach specialists, recruiters, marketers, salespeople, etc can benefit from email warm-ups.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Growth marketers, outbound sales teams, and agencies that need one system to scrape leads, verify emails, run cold-email campaigns, warm up inboxes, and optimize outreach performance

Audience

Anyone in need of an Email Warmup tool that interacts with their inbox to improve sender's reputation

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$8.99 per month
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 4.0 / 5
features 5.0 / 5
design 5.0 / 5
support 4.0 / 5

Reviews/Ratings

Overall 1.0 / 5
ease 1.0 / 5
features 1.0 / 5
design 1.0 / 5
support 1.0 / 5

Pros & Cons from Real Users

Pros

  • I use it for my campaign automation for weeks or even months. And its webhooks and MCP connection allow me to control it as I want and connect it to my existing scan. Its MCP connection makes everything too easy for me to manage with my Claude AI.

Cons

  • There was an issue in the early stage that the team fixed in a day. But it will not be a concern because the platform clearly says that it is in an early-stage beta and bugs can be expected.

Pros & Cons from Real Users

Pros

  • None. There is nothing I liked working with this company. Their interface is poor, no support, no reporting. Nothing.

Cons

  • 1. Support is totally non-existent. I wrote their support the first time the 18th of June '25 and still have not receive ANY reply 2. When I bought Saleshandy (doing false advertising claiming 'unlimited warm' which you don't get) they told me that the existing TrulyInbox subscription would be cancelled and I would get linked with their system. That was a lie and the subscription did not get cancelled. And again support is not responding for a refund. 3. Connection to random inboxes is lost and neither their system or support helps to solve it 4. They don't show stats of emails send for warm-up. Only from yesterday but not over time. 5. their system does not adhere to the 'daily increase' of warm-up as per config at all

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

GrowZen
Pakistan
www.growzen.app/

Company Information

TrulyInbox
www.trulyinbox.com

Alternatives

EmaReach

EmaReach

EmaReach AI

Alternatives

LiftInbox

LiftInbox

Unique Technologies

Categories

Categories

Integrations

Gmail
Microsoft Outlook

Integrations

Gmail
Microsoft Outlook
Claim GrowZen and update features and information
Claim GrowZen and update features and information
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Claim TrulyInbox and update features and information