Send to your list. Land in their inbox.
For newsletter publishers and content businesses, the list IS the business. Thousands of opted-in subscribers, hygiene and frequency that have to be right, and content that needs to land in the inbox every send. InboxAlly is built for that work: per-segment placement testing, engagement signals to revive tired segments, list hygiene at scale, and daily IA Score visibility.
Built for senders whose newsletter is the business
When the newsletter is the business, deliverability is the multiplier. Subscribers who can't see your sends might as well not be on the list. The work — hygiene, frequency, content quality, bulk-mailing best practices — has to be right send after send. And list health degrades quietly: opens slip a few points each month, complaints tick up after big sends, and the moment you notice is usually the moment you're already routed to Promotions or Spam.
A bigger opt-in list isn't a better-landing list
A 100K-subscriber opt-in list can land worse than a 10K one. As lists grow, the share of subscribers who don't engage anymore grows with it, and mailbox providers route the whole sender accordingly. Size is the vanity metric; engagement is the one providers actually score.
Tired segments quietly drag the sender down
The lapsed and re-engagement segments don't complain — they just stop opening. Mailbox providers see the falling engagement and demote future sends to everyone, not just the lapsed cohort. The healthy segment pays the price for the tired one.
Big broadcasts reveal what daily sends mask
A monthly newsletter or holiday push lands across the whole list at once, and providers see the volume anomaly. If the sender reputation isn't in good shape going in, the big broadcast becomes the diagnostic event — typically with the next two weeks of regular sends paying for it.
What InboxAlly gives list owners
A deliverability platform built for senders whose list is the asset: per-segment placement visibility, engagement signals to revive tired cohorts, list hygiene at scale, and a daily IA Score so you see the drift before subscribers do.
Per-segment placement testing
Test the exact message you'd send to each segment against a seed network covering Gmail, Google Workspace, Outlook, Hotmail, Microsoft 365, and Yahoo. See where each provider routes each segment's send (Inbox, Promotions, or Spam) before the broadcast, so you can tune copy or cadence per segment rather than averaging.
How placement testing worksEngagement signals to revive tired segments
InboxAlly's engagement engine generates real interaction signals (opens, clicks, replies, spam-to-inbox moves) through actual mailbox interfaces, not API calls. For lapsed and re-engagement segments, this retrains mailbox providers on what the sender deserves. Run it in parallel with regular sends; placement recovers without losing list size.
How reputation repair worksList hygiene at scale
Validate every subscriber against the address-quality checks used in deliverability incident response: disposable domains, role-based addresses, spam-trap patterns, hard bounces, and syntactic errors. The biggest single thing you can do for a large list is stop sending to the addresses that hurt you.
Email List VerificationDaily IA Score and multi-sender visibility
IA Score updates daily and breaks down per mailbox provider, so you see which provider drove a placement change within a day of it happening. Manage multiple sending domains, brands, or business lines as separate sender profiles in one account; each carries its own score and history. Capacity scales with your plan.
How the IA Score worksTooling, automation, and a team built to scale with your list
List ownership compounds when the tools and the people behind them grow with you. AI grounded in your account data, autopilot warmup for new sending domains, and a deliverability team you can reach as the list does.
IA Assistant
An in-app AI grounded in your account data. Ask why a segment's open rate slipped after a broadcast, or what changed on a specific sender after a list import. Answers come from your sends and reputation history, not generic best-practice templates.
Adaptive Autowarmup
AI-driven autopilot warmup that adapts to each domain's signals in real time. Adding a new sending domain or rotating between brands? Set the ramp, plug in via native CRM integrations, and let the warmup run while you focus on the editorial calendar.
Our deliverability team, every plan
Every plan ships with a dedicated Customer Success Manager plus access to InboxAlly's deliverability team via email, live chat, phone, and Zoom. When a broadcast lands wrong or a segment stops responding to repair, there's a team to work the recovery with you.
Our IP address and domain name were on the line — they had taken a nosedive. That's when we came across InboxAlly. In no time, both our IP and domain reputation shot up to excellent status. The product is downright incredible.Dan Wardle · CEO, Surveylab
Awarded for what works.
The list owner's toolkit
Beyond the IA Score and placement testing above, InboxAlly ships the full toolkit. What you need to keep a growing list landing in the inbox.
Validate placement, list hygiene, and authentication before the broadcast goes out.
Per-segment placement testing
Send segment-specific copy to a seed network covering Gmail, Google Workspace, Outlook, Hotmail, Microsoft 365, and Yahoo. See exactly where each provider routes each segment before the broadcast.
List hygiene at scale
Validate the full list against address-quality checks used in deliverability incident response: disposable domains, role accounts, spam-trap patterns, hard bounces, syntactic errors. The single biggest thing most large lists need.
Authentication health
Per-domain SPF, DKIM, and DMARC tracking via DMARC Reports and Domain Analytics. Surface alignment issues and unauthorized sources across every sending domain in the portfolio.
Run campaigns with engagement signals, multi-sender support, and recovery tools in place.
Engagement signals on lapsed segments
The engagement engine generates real interaction signals through actual mailbox interfaces. Retrain mailbox providers on what the sender deserves so the healthy part of the list stops paying the price for the lapsed part.
Reputation repair on degraded senders
Reverse bad mailbox classifications (Spam to Inbox, Promotions to Primary) on a sending domain that took a hit. Recover the sender instead of rotating to a fresh domain every time a big broadcast underperforms.
Multiple sender profiles per brand or list
Manage every sending domain as a separate sender profile under one account. Run separate engagement modes, placement history, and reporting per brand, business line, or list segment. Capacity scales with your plan.
Watch daily so a placement slip is visible the moment it starts, not the week subscribers stop opening.
Daily IA Score per sender
IA Score updates daily and breaks down per mailbox provider. See score drift the day it starts, not the week subscribers stop opening. Trend lines map score moves back to specific broadcasts, list changes, or send windows.
Postmaster + Domain Reports
Postmaster monitoring surfaces Gmail reputation signal shifts as they happen (domain reputation, spam rate, delivery errors). Domain Reports consolidate authentication health across every sending domain in one place.
CRM integrations + REST API
Native CRM integrations with HubSpot, Klaviyo, and more. For anything custom, the REST API covers seeds, sender profiles, and broadcasts. Wire IA Score, placement data, and warmup state into your sending stack directly.
Questions email list owners ask
My list has gotten "tired." Can InboxAlly help?
Yes. InboxAlly's engagement engine generates real interaction signals (opens, clicks, replies, spam-to-inbox moves) through actual mailbox interfaces, not API calls. For lists where opens have slipped and providers have started routing sends to Promotions or Spam, this retrains mailbox providers on what the sender deserves. You'd typically run it in parallel with regular sends; placement improvements are visible in the IA Score and per-provider data within days to weeks depending on how degraded the sender is. You don't need to drop the lapsed segment to recover.
Can I test a campaign before sending to my list?
Yes. Send the exact subject line, preview text, and body to a seed network covering Gmail, Google Workspace, Outlook, Hotmail, Microsoft 365, and Yahoo. The dashboard shows where each provider routes the message (Inbox, Promotions, or Spam) per send. Both Primary inbox and Promotions count as successful inbox placement in InboxAlly's reporting. The goal is consistent placement and rising engagement, not Primary-tab-or-nothing.
What if I run multiple lists, brands, or business lines?
InboxAlly supports multiple sender profiles under one account, each with its own IA Score, engagement mode, placement history, and reporting. Common list-owner setups: separate profiles per brand, per business line, or per list segment (engaged vs. re-engagement, for example). Plan tier determines how many sender profiles you can run simultaneously, from 1 on Starter up to unlimited on Enterprise.
How do I keep deliverability healthy as my list grows?
Three habits matter most as a list scales. First, keep address quality high by running list hygiene on imports and periodically on the full list to remove spam traps, role accounts, and hard bounces. Second, watch the IA Score daily so a slip is visible the day it happens, not the week subscribers stop opening. Third, run engagement signal generation on segments that have lapsed so they don't drag the rest of the sender down. InboxAlly ships the tooling for all three.
What about big broadcasts (newsletters, holiday pushes)?
Test the message via placement testing first, watch live Postmaster signals during the send, and have engagement signal generation running in parallel on a separate sender profile if the volume is unusual for the sender. The aim is to see reputation moves during the broadcast, not two weeks later when regular sends start landing in Promotions. The deliverability team is available via email, live chat, phone, and Zoom for substantial-campaign work.
Is there an API or programmatic access?
Yes. InboxAlly exposes a REST API covering three resource areas: seeds (list, shuffle, manage), sender profiles (create, update, bulk-change engagement presets by domain or tag), and broadcasts (placement results filtered by provider or sender). Common list-owner use cases: pulling per-segment placement data into a custom dashboard, automating engagement mode changes when inbox rate drops below threshold, and syncing seed lists across a multi-brand portfolio.
What is the IA Score?
IA Score is InboxAlly's proprietary sender-reputation index, scored 0–100%, representing your predicted inbox placement rate. It's built from your seed email placement history, weighted toward recent performance, and updated daily. The score breaks down per mailbox provider, so when it moves you can see which provider drove the change. Score ranges: 95–100% Excellent, 85–94% Good, 70–84% Fair, below 70% Needs Attention.
See what InboxAlly looks like on your hardest list segment
A 30-minute live walkthrough with a deliverability specialist on our team. Bring the segment that's underperforming. We'll show you what the dashboard says about it.
Book a 30-minute demo