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Affiliate program

Your audience already buys mailboxes.
Get paid every month they keep them.

10% lifetime recurring commission on every payment a customer you referred makes, for as long as they keep paying. Referrals are tracked on a 90-day last-click cookie.

Apply to the programme
Lifetime recurring, on every payment
10%Lifetime recurring, on every payment
Cookie window, attributed on last click
90 daysCookie window, attributed on last click
Paid through Stripe from $100
QuarterlyPaid through Stripe from $100

How it works

  1. 01

    Apply

    No joining fee and no minimum volume. Applications from legitimate businesses are approved on submission, and your dashboard opens at partner.inboxkit.com.

  2. 02

    Share your link

    Promote InboxKit through your own content and channels. A click sets a 90-day cookie, and the most recent qualifying click inside that window earns the commission.

  3. 03

    Get paid quarterly

    Earnings show in your dashboard in real time. Payouts go out through Stripe in the first week of January, April, July and October, once your balance has reached $100. Anything below that rolls forward.

What the programme gives you

Lifetime recurring

10% of every payment a referred customer makes, for as long as they keep paying.

Something operators already need

US-IP Google Workspace and Microsoft 365 mailboxes, warmup, DNS and deliverability — infrastructure your audience is buying anyway.

Materials supplied

Promote with marketing materials InboxKit supplies, used as supplied, alongside your own content.

Earnings in real time

Clicks, conversions and balance are visible in the affiliate dashboard as they happen.

90-day attribution

A long last-click window, so a referral that takes weeks to decide still counts as yours.

A direct contact

Questions about the programme go to support@inboxkit.com and reach the team that runs it.

Who this is for

Worth knowing before you apply. Brand bidding in particular voids every commission on the account, paid and unpaid.

A good fit

  • Websites, blogs, newsletters and review or comparison content you own
  • Social accounts, videos, podcasts and communities where you are a real participant
  • Email to your own opted-in subscribers, within anti-spam law
  • Direct outreach to your own clients and contacts, where it is lawful and welcome
  • Marketing materials InboxKit supplies, used as supplied

Not for

  • Brand bidding: paid ads on "InboxKit", any variation of it, or competitor-plus-brand terms
  • The InboxKit name in ad copy, display URLs or landing-page domains without written authorisation
  • Self-referrals, including purchases by a business you own, control or work for
  • Coupon, cashback and deal sites capturing customers already on their way to buy
  • Spam: unsolicited bulk email, bought or harvested lists, forum and comment spam
  • Attribution manipulation: cookie stuffing, forced clicks, hidden iframes, bots, click farms

What that adds up to

Set both numbers to your own audience. Everything else comes from the published rate and the published commission.

5
100
Per customer, per month
$25
Monthly, after your first month
$125
Total across your first year
$9,750

Assumptions, all of them:

  • $2.50 per mailbox per month, the annual-billing rate on our pricing page. Monthly billing is higher, so this is the conservative end.
  • 10% commission, per the affiliate policy.
  • Every referred customer keeps paying for the full period shown. We publish no retention figure, so this is an illustration, not a forecast.
  • Referrals accumulate month on month, and nothing is deducted for refunds, chargebacks or the $100 payout threshold.

The product you'll be recommending

Teams already running on InboxKit

Trusted by: Vectify, HeyReach, C17 Labs, Anevo Marketing, Understory, NoBroker, 11x, Polar Analytics, PwC, Gupshup, Zendesk, Gorgias, Expandi, LeadMagic

Rated by the buyers you’ll be sending

G2 High Performer and Users Most Likely to Recommend, Spring 2026, every badge earned from verified customer reviews.

  • G2 High Performer — Email Deliverability, Spring 2026
  • G2 High Performer — Small Business, Email Deliverability, Spring 2026
  • G2 Users Most Likely To Recommend — Email Deliverability, Spring 2026
  • G2 Users Most Likely To Recommend — Small Business, Spring 2026
  • G2 High Performer — Asia Pacific, Email Deliverability, Spring 2026
  • G2 High Performer — Asia, Email Deliverability, Spring 2026
  • G2 High Performer — India, Email Deliverability, Spring 2026

What customers say in public

LinkedIn posts and G2 reviews from teams on InboxKit. Any card opens the original, so your audience can check it themselves.

S. Can Timağur

Founder, Allbound OS

Something most people don't think about: setting up mailboxes should take seconds, not hours. That's exactly why I started paying attention to tools like Inboxkit. Under 10 seconds. That's all it takes.

Wesley Hoang

Cofounder @Cymate @AgencyWorkplaces

I don't recommend inbox providers unless I have used them myself. Deliverability is too important to guess on. Today we officially became a Platinum Partner.

Ammar Ahmad

Founder & Host, GTM WORLD Community & Podcast

If you're serious about email deliverability your results are only as good as your infrastructure. Inboxkit gives you everything you need to land in primary: US-IP Google Workspace & Microsoft 365 mailboxes, automated DNS, SPF, DKIM & DMARC setup, built-in warmup, blacklist monitoring & inbox placement tests. Ready in under 10 minutes. Zero manual work.

Faraz Ahmed

Founder ThynkGrowth

I've been using InboxKit for quite some time now across multiple outbound setups, and honestly, zero deliverability issues so far. Stable infra, clean inboxes, and predictable performance, which is rare in this space.

Leo Branica

Founder - stealth startup

I still get asked how to set up simple, effective cold email. I recommend the same 3 tools every time: InboxKit – Email infrastructure. Prospeo.io – The best verified email + phone provider. Instantly.ai – Easy sending that integrates with your stack. Keep it simple. Get your V1 live. Then iterate.

Avik Ghimire

Founder @ enrichflow

I don't usually talk about tools. But I've been dealing with the same email infrastructure frustrations for months. I got tired of guessing. That's why I've been using InboxKit. Their dashboard shows real-time deliverability and sender reputation by domain. I can see problems forming before emails hit spam.

Dimitar Petkov

Co-founder @ LeadHaste

Your cold email infrastructure provider isn't a vendor at scale. It's load-bearing. We run 100+ active client campaigns on Inboxkit — thousands of domains, millions of sends a month.

Harshil Bhimani

Founder @ Augment Leads | MVA cases on performance

95% deliverability guarantee. Let me say that again: NINETY-FIVE percent. I've never seen an inbox provider put that in writing before. Setup time? 15 minutes vs. the 2+ hours I've spent with other providers.

“Affordable at Scale: Easy Setup for Managing 500+ Inboxes”

What I like most is how affordable it is for the scale we’re running. We currently use around 500 inboxes, and InboxKit lets us manage all of that at a relatively low cost. Setup is simple too, so overall it saves us a lot of time and money.

Kylan T. · Founder

“Inboxkit Streamlined Domain & Mailbox Setup at Scale with Strong Warmup Results”

We run cold email at real scale (hundreds of mailboxes across multiple domains) and Inboxkit has been the backbone of our sending infrastructure for about 2 months now. The biggest win is how easy it makes domain and mailbox setup — spinning up new domains with SPF/DKIM/DMARC already configured correctly used to eat hours, now it's mostly automated. Warmup has kept our reputation scores high across the board, which directly protects deliverability for our clients' campaigns. Being able to see all our domains and mailbox health in one dashboard instead of juggling multiple registrars/providers has saved us a ton of operational overhead as we've scaled sending volume.

Kylan & B. · Co-Founder

“Top-Notch Support and Consistently Great Deliverability”

Customer support is truly top-notch. They add you to a Slack channel, which makes it easy to communicate without having to go back and forth over email. Deliverability has also been consistently great.

Zahra B. · Co-Founder

“Super Easy Setup and Smooth Platform Integration”

It was super easy to set up, and it connected smoothly with the other platforms I use.

Nico · Founder

“Effortless Cold Email Management with Inboxkit”

I find Inboxkit to be an awesome solution for managing our primary cold email infrastructure with ease. I like the placement test feature a lot because it tests mailboxes with real and authentic emails without requiring much effort. The initial setup was very straightforward; it felt like a catwalk.

Vivek D. · Founder

“All-in-One Domain & Inbox Setup with Automatic SPF/DKIM/DMARC”

I like that everything is in one place: you can buy a domain and inboxes, and SPF, DKIM, and DMARC are set up automatically.

Mantas · Founder

“Top-Tier Support with Excellent Deliverability”

I really appreciate Inboxkit's support, which is top-tier and always quick to respond. They take time to explain things properly, and if I need more help, I can easily book a call for the next day. It reassures me that I'm not left on my own when something goes wrong. Additionally, the deliverability is great, helping me achieve up to 5% reply rates on my campaigns. Setting up accounts is straightforward without major issues, and any problems get resolved swiftly by their support team. Also, the initial setup of Inboxkit was very easy, and I'd definitely recommend it to others.

Samuel P. · CEO / Founder

“Unmatched Email Deliverability and Reliable Support”

I really appreciate Inboxkit's very high deliverability, which is even better than prominent suppliers. It's also very durable, with no downtime or disconnections in the four months I've used it. The deliverability score is high, almost twice as good as ZapMail. Their support is excellent and very knowledgeable, making the extremely easy setup user-friendly. Overall, both the product and the support stand out for their quality.

Manavjot S.

One referral, 10% of every invoice they ever pay.

Apply to the programme

Questions

10% lifetime recurring commission on payments made by customers you refer, for as long as they keep paying. Commission is calculated on payments InboxKit actually receives and keeps, so a refunded, reversed or fraudulent payment is deducted from your balance.

Quarterly, through Stripe, in the first week of January, April, July and October, for balances that reached the threshold by the end of the preceding quarter.

Yes. Payouts run once your balance reaches $100. A balance below that rolls forward to the next quarter rather than being lost.

90 days, on a last-click basis. Where more than one affiliate has referred the same customer, the most recent qualifying click inside the window earns the commission. A referral that cannot be attributed to a valid affiliate link earns nothing.

InboxKit supplies marketing materials, and the policy asks that you use them as supplied. Alongside them you can promote through your own sites, newsletters, social accounts, videos, communities, opted-in email and direct outreach to your own contacts.

No joining fee and no minimum volume. The programme is open to legitimate businesses and individuals with an audience interested in email marketing or cold outreach, and applications are approved on submission. Approval is not permanent: it can be withdrawn for a breach of the policy or for misrepresenting InboxKit.

No. Branded search traffic belongs to InboxKit, and that covers the "InboxKit" keyword, its variations and misspellings, competitor-plus-brand terms, the brand in ad copy or display URLs, lookalike domains and handles, and paid traffic pointed straight at inboxkit.com through an affiliate link. Breaching this blocks all revenue on the account in full, including commission already earned but not yet paid.

The policy sets no geographic restriction. You provide your own payout details for Stripe and are responsible for any taxes payable on your commission.

Anything else about the programme: support@inboxkit.com.

Programme terms

The rules in short

Promote InboxKit through your own content and be honest about what it does. Do not run paid ads on the InboxKit keyword or any variation of it, bid on InboxKit branded search traffic, or use the brand in ad copy, display URLs, or landing page domains without written authorisation. Branded traffic belongs to InboxKit. No self-referrals, no coupon or cashback misuse, and no spam.

Consequence of breach

Where an affiliate is found to be running ads on InboxKit branded keywords or otherwise taking branded traffic, all affiliate revenue accrued by that affiliate will be blocked in full and rendered null and void, including commissions already earned but not yet paid.

Read the full policy

These are a summary. The full terms are in our Affiliate Policy, which applies alongside our Acceptable Use Policy and Terms of Service.

Last updated: August 10, 2026

Start earning on referrals you already make

No joining fee, no minimum volume, and the commission keeps paying for as long as the customer does.