OutreachBloom·Multi-channel B2B agencyTL;DR
In late 2025, a Google mailbox crackdown ran through the cold email world and hit agencies hardest. Rather than chase the next cheap workaround, Jayson DeMers of OutreachBloom moved to InboxKit mid-crisis — and has run OutreachBloom's cold email infrastructure on it ever since, at an 11.5% reply rate and a 0.6% bounce rate.
In late 2025, a Google mailbox crackdown ran through the cold email world. It hit hardest in the agency space, where the teams running outbound for clients depend on sending infrastructure that, when it fails, doesn't break one campaign. It breaks all of them at once. Jayson DeMers of OutreachBloom was one of the operators caught in it.
Rather than wait it out, he went looking for honest answers, and found InboxKit in the middle of the noise. He has been with us ever since. Here is how the switch happened.
For the bigger picture on how OutreachBloom thinks about channels, see our breakdown of AI SEO vs Cold Email vs Reddit.
OutreachBloom is a multi-channel B2B agency running a full offering across AI SEO, cold email, Reddit, and LinkedIn. On the cold email side, they handle the whole motion for clients, from list building through to reply handling, which means deliverability isn't a nice-to-have for them. It is the foundation their client results sit on.
So when the Google crackdown threatened cold email infrastructure across the board, it put a core part of their service at risk. Jayson did the research and found his way to InboxKit.
It is worth being precise here, because two separate things tend to get blurred together.
The backdrop was a policy shift. In early 2024, Google introduced bulk-sender rules around authentication, spam-rate limits, and one-click unsubscribe. For a while, enforcement was soft, and plenty of senders didn't take it seriously.
The event that actually hit agencies was different. In late 2025, Google moved against mailboxes sold through reseller "panels" — cheap inboxes that exploited loopholes in education, nonprofit, and legacy G Suite programs. Cold emailers and agencies woke up to sudden Gmail and Workspace suspensions. Because those accounts were never legitimate to begin with, there was no appeal. Worse, resellers pooled accounts, so when one panel went dark, everyone relying on it went down at the same time.
For an agency running client campaigns on that kind of infrastructure, it was the nightmare scenario: pipelines frozen, with no way to fix it.
He first found InboxKit on Reddit, and stayed for the inbox placement testing, the customer service, and a level of professionalism he wasn't getting elsewhere.
In the middle of the crisis, what set InboxKit apart wasn't a sales pitch. It was clarity. We showed up as a source of straight answers when most of the market was scrambling: what was happening, why, and what to do about it. Jayson came across InboxKit during that period and made the switch in full.
Since then, he has run OutreachBloom's cold email infrastructure on InboxKit, and what he values most is how uncomplicated it is. The feature he depends on is the inbox placement test: the ability to validate that emails are actually landing in the inbox, using the real campaign copy he sends for clients, before they go out at scale.
That matters more than it sounds. For an agency, a campaign that quietly slips into spam means no replies, a frustrated client, and eventually churn. The placement test catches that before it happens, which is why Jayson ranks it as the feature he would least want to work without.
The move wasn't about finding cheaper inboxes. It was about trading fragile, pooled accounts for infrastructure built to be legitimate — and gaining visibility into deliverability before sending, not after.
The results back it up. As of June 2026, across OutreachBloom's campaigns on InboxKit, the agency maintains an 11.5% reply rate and a 0.6% bounce rate, on 196K+ emails sent. Those are the kind of numbers that only hold when emails are consistently reaching real inboxes.
In Jayson's words:
The professionalism was a cut above the other tools we've used. The pricing was right, the customer service was there. Getting quick, expert support is a really big factor for any software. It's clear InboxKit was built by a team who knows cold email inside and out, that knows what works and what doesn't.
When the panels collapsed, the agencies that recovered fastest weren't the ones chasing the next cheap workaround. They were the ones that moved to infrastructure built to be legitimate, and that gave them visibility into whether their email was actually landing before it went out at scale.
For OutreachBloom, the inbox placement test turned deliverability from something they hoped was working into something they could verify, on the real copy they send for clients. That is what lets an agency stand behind its reply rates, and it is why Jayson made the switch permanent.
OutreachBloom is a multi-channel B2B marketing agency offering AI SEO, cold email, Reddit, and LinkedIn outreach.
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