The Allegrow Insider’s Guide
Everything we know about Allegrow in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Allegrow
The Insider’s Guide
B2B email verification with catch-all results and mailbox health
Every plan, grade, refund rule and rival among email verification and deliverability tools, read from Allegrow’s own pages.
Made by Allegrow · checked Nov 12, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Allegrow’s own pages, its app-store listings and our grades. Every fact in it is on Allegrow’s page too, where it is kept up to date. Checked Nov 12, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.0
GPA, above 4 of the 38 other email verification and deliverability tools we grade
Allegrow verifies email addresses for outbound sales teams and gives catch-all contacts a Valid or Invalid status instead of an unknown one. It also flags spam traps, disposable addresses and inactive mailboxes, and detects each contact's primary email. Paid plans connect mailboxes to track domain health, with hourly SPF, DKIM and DMARC monitoring.
To get you started, here are 9 things to know about Allegrow, taken from its own pages and our grades.
You upload CSVs and connect a mailbox for domain tracking, so there is some setting up.
- 1
Best for verifying B2B emails with catch-all results
Allegrow verifies B2B email lists and reports on catch-all addresses and mailbox health.
- 2
Paid plans start at $99 a month
As its pricing page puts it: $99 per month for 5,000 contacts a month.
- 3
You can try it first
14-day free trial that verifies up to 1,000 addresses, without integrations, API access or mailbox connection.
- 4
It runs on Web
Web.
- 5
Catch-all verification
Gives catch-all addresses a Valid or Invalid status rather than leaving them as unknown.
- 6
Risk flags
Identifies spam traps, disposable addresses and inactive mailboxes, and detects each contact's primary email.
- 7
Domain health tracking
Starter connects 1 mailbox to track domain health and reputation, with automated positive email interactions.
- 8
A 2.0 GPA, above 4 of 38
That is against the other email verification and deliverability tools we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
To replace Allegrow you would be making a network of real inboxes that open and answer your emails. That is not a weekend's work, with an AI app builder or without one.
Allegrow at a glance
- Pricing
- Free trial, from $99 per month for 5,000 contacts a month
- Free plan
- No
- Free trial
- 14-day free trial that verifies up to 1,000 addresses, without integrations, API access or mailbox connection.
- Runs on
- Web
- Made by
- Allegrow
- Category
- Email Verification & Deliverability
- Our grade
- 2.0 GPA, fair
The report card
Best for verifying B2B emails with catch-all results
Allegrow verifies B2B email lists and reports on catch-all addresses and mailbox health. Starter is $99 a month for 5,000 contacts, the free trial leaves out integrations and the API, and the unlimited plan with native HubSpot and Outreach connections is $1,340 a month.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | D | Starter is $99 a month for 5,000 contacts, which is where the dearest tenth of deliverability tools starts. Extra credits are $8 per 1,000, and unlimited verification is $1,340 a month. |
| Free plan and trial | C | 14-day trial that verifies up to 1,000 addresses, without integrations, API access or mailbox connection. There is no free plan, and the listing does not say if a card is needed. |
| Features | C | Catch-all verification, risk flags, domain health and DNS monitoring. Starter has no native integrations and API access is on request. |
| Ease of use | C | No store rating on record. You upload CSVs and connect a mailbox for domain tracking, so there is some setting up. |
| Platforms and integrations | B | Web, with native HubSpot, Outreach and Salesloft only on the top plan and a Clay link through an API key. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who Allegrow is for
- Fits if you send B2B outreach and want catch-all addresses sorted out
- Works for sales teams that want list cleaning and mailbox health in one place
Who it is not for
- Pricey if you are one person: Starter is $99 a month for 5,000 contacts
- Pricey if you want native CRM links, as they sit on $1,340 a month billed annually
- Watch out: the trial leaves out integrations, API access and mailbox connection
- Watch out: extra users cost $40 a mailbox or user, and the Starter page gives no billing period
Good to know
Good for
- Outbound sales teams with many catch-all addresses
- RevOps teams cleaning CRM data before sequences
- Data builders who embed verification in their own product
Worth knowing
- The free trial excludes integrations, API access and mailbox connection.
- Starter has no native integrations and runs on credits; extra users cost $40 per mailbox or user.
- Unlimited verification and native integrations need Scale Plus Unlimited at $1,340 a month billed annually.
- The Starter price carries no billing period on the page.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$99
A month to start
Allegrow is a paid product with a free trial, starting at $99 per month for 5,000 contacts a month.
There is no free plan, and the listing does not say if a card is needed.
Starter
$99
per month for 5,000 contacts a month
CSV list cleaning, API access on request, a Clay integration through an API key, and 1 connected mailbox for domain health tracking. Extra credits cost $8 per 1,000 contacts.
Scale Plus Unlimited
$1,340
per month, billed annually
Unlimited verification, native HubSpot, Outreach and Salesloft integrations, API capped at 1M requests a month, and a customer success manager. Sold by demo request.
API Plan
Custom
Priced for millions of API requests a month, with unlimited API keys and custom sync and async speeds.
Trying it first
14-day free trial that verifies up to 1,000 addresses, without integrations, API access or mailbox connection.
Read from allegrow.co on Nov 12, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Web
B2B email verification with catch-all results and mailbox health. Here is what it does, as its own site describes it, and what it covers: email verification, inbox warm-up, dMARC.
Catch-all verification, risk flags, domain health and DNS monitoring.
- Catch-all verification
- Gives catch-all addresses a Valid or Invalid status rather than leaving them as unknown.
- Risk flags
- Identifies spam traps, disposable addresses and inactive mailboxes, and detects each contact's primary email.
- Domain health tracking
- Starter connects 1 mailbox to track domain health and reputation, with automated positive email interactions.
- DNS monitoring
- Paid plans check SPF, DKIM and DMARC records every hour.
- CRM and sales tool integrations
- Scale Plus adds native integrations for HubSpot, Outreach and Salesloft and automated workflow rules.
Where it runs
- Web
What it works with
- HubSpot
- Outreach
- Salesloft
- Clay
Allegrow is made by Allegrow.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
4/38
Other email verification and deliverability tools it is graded above
Allegrow's GPA of 2.0 is higher than 4 of the 38 other email verification and deliverability tools we grade, and level with 7.
It stands best on platforms and integrations (B, above 14 of 38) and worst on value for money (D, above 0).
Its paid plans start at $99 a month, against a middle price of $17.49 for the category: 23 of the 25 others that charge start lower.
On features, ease of use and platforms it scores 2.3 out of 4. 8 tools score higher and cost less.
Each grade against the category
Every bar is all 39 email verification and deliverability tools we grade, cut by the letter each got. Allegrow’s own letter is outlined.
- DValue for moneyAbove 0 of 38
- CFree plan and trialAbove 5 of 38
- CFeaturesAbove 0 of 38
- CEase of useAbove 1 of 38
- BPlatforms and integrationsAbove 14 of 38
Price against what you get
Each dot is one of 26 email verification and deliverability tools. Further left costs less; higher up scores better on features, ease of use and platforms. Allegrow is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
To replace Allegrow you would be making a network of real inboxes that open and answer your emails. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 27 of the 38 other email verification and deliverability tools grade higher. It costs $1,188 a year.
What you could not
- A network of real inboxes that open and answer your emails.
- Checking that an address exists without writing to it.
- Reading the reports inbox providers send about your domain.
What this rests on. Allegrow’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
ZeroBounce, Bouncer, NeverBounce, Kickbox and MailReach
The 5 tools Allegrow is most often weighed against, with where each one differs from it.
- 2.4GPA
ZeroBounce
Free plan · from $39 one-time
Email list verification with warm-up and DMARC monitoring in one plan.
- ZeroBounce has a free plan. Allegrow does not, though it has a free trial.
- Only ZeroBounce lists an iOS app.
- 2.4GPA
Bouncer
Free trial · from $8 one-time
Email list verification with credits that never expire.
- Allegrow also covers inbox warm-up and dMARC.
- 2.4GPA
NeverBounce
Free trial · from $8 one-time
Email list cleaning and real-time verification, now part of ZoomInfo.
- Allegrow also covers inbox warm-up and dMARC.
- 2.4GPA
Kickbox
Free trial · from $5 one-time
Pay-as-you-go email verification with an optional threat score.
- Allegrow also covers inbox warm-up and dMARC.
- 1.8GPA
MailReach
From $20/mo
Email warm-up and inbox placement tests, priced per mailbox.
- Allegrow also covers email verification and dMARC.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
12
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is Allegrow free?
No, Allegrow is a paid product, but you can try it first. 14-day free trial that verifies up to 1,000 addresses, without integrations, API access or mailbox connection.
How much does Allegrow cost?
Allegrow lists 3 plans. Starter: $99 per month for 5,000 contacts a month.
What platforms does Allegrow work on?
Allegrow is available on Web.
Does Allegrow have an Android app?
No Android app was listed when its pages were read on Nov 12, 2026. Allegrow is listed for Web.
Does Allegrow have an iPhone app?
No iPhone app was listed when its pages were read on Nov 12, 2026. Allegrow is listed for Web.
Is Allegrow open source?
Allegrow is not described as open source on its own site, as read on Nov 12, 2026.
What does Allegrow integrate with?
Allegrow's listing names HubSpot, Outreach, Salesloft and Clay. A listing names up to eight integrations, so it may connect to more.
Who makes Allegrow?
Allegrow is made by a company of the same name.
What are the alternatives to Allegrow?
The closest alternatives to Allegrow in our directory are ZeroBounce, Bouncer, NeverBounce, Kickbox and MailReach.
How does Allegrow compare with other email verification and deliverability tools?
Allegrow's GPA of 2.0 is higher than 4 of the 38 other email verification and deliverability tools we grade, and level with 7.
Is Allegrow good value for money?
ToolGPA grades Allegrow D for value for money. Its paid plans start at $99 a month, against a middle price of $17.49 for the category: 23 of the 25 others that charge start lower.
Could I make my own version of Allegrow?
To replace Allegrow you would be making a network of real inboxes that open and answer your emails.
Where this guide comes from
The prices, plans, platforms and features were read from Allegrow’s own pages on Nov 12, 2026, and the grades were given on Nov 12, 2026. Graded from this listing, whose facts were read from Allegrow's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Allegrow. Prices change, so check allegrow.co before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
5,038
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
5,038
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Allegrow, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/allegrow
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Allegrow: The Insider's Guide", checked Nov 12, 2026. https://toolgpa.com/tools/allegrow
Know someone choosing between email verification and deliverability tools?
Send them this guide: toolgpa.com/tools/allegrow/guide
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See our other guides
The best-graded email verification and deliverability tools after Allegrow, each with an Insider's Guide of its own.
- Email Verification & Deliverability Insider's GuideEvery one of the 40 email verification and deliverability tools we grade, compared
- QuickEmailVerification Insider's GuideBulk email list cleaning and a real-time verification API3.0 GPA
- Mail-Tester Insider's GuideSend an email to a test address and get a spam score out of 102.8 GPA
- Reoon Email Verifier Insider's GuideBulk and real-time email verification with refunds on unknowns2.8 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Allegrow’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Allegrow is a trademark of its owner, and this guide is not made, paid for or approved by Allegrow. Prices and plans change: check allegrow.co before you buy.