Will your emails reach the inbox? Free email deliverability check in 5 seconds.
A free audit of your domain's sending setup — and independent, measured deliverability rankings of the platforms that send your email.
SPF · DKIM · DMARC · MX · reverse DNS · BIMI — free, no signup, nothing stored
Email services by measured deliverability
Full ranking · 44 services| # | Service | Deliverability | Inbox rate | Gmail | Outlook | Yahoo | User rating |
|---|---|---|---|---|---|---|---|
| 1 | ActiveCampaign | 94 | 94.4% | 97 | 89 | 94 | 3.6 |
| 2 | Postmark | 93 | 96% | 87 | 94 | 96 | 3.3 |
| 3 | Constant Contact | 92 | 93.8% | 96 | 91 | 94 | 4.1 |
| 4 | SMTP2GO | 92 | 95.3% | 97 | 84 | 96 | 4.8 |
| 5 | Moosend | 91 | 94.7% | 95 | 96 | 93 | 3.8 |
| 6 | SendPulse | 91 | 95% | 100 | 75 | 95 | 4.5 |
| 7 | CleverReach | 87 | 91.1% | 75 | 97 | 87 | 3.9 |
| 8 | GetResponse | 87 | 90.9% | 89 | 92 | 92 | 4.3 |
| 9 | Kit | 85 | 89.3% | 79 | 81 | 80 | 4.3 |
| 10 | Klaviyo | 85 | 89.7% | 90 | 65 | 89 | 3.2 |
Showing top 10 of 44 services
Tested September 2026 · seed-list inbox placement
We send real campaigns through every platform to a controlled seed list and publish what percentage actually reached the inbox.
- Inbox — landed in the primary inbox
- Tabs — Promotions and similar folders
- Spam — junk-folder placement
- Missing — accepted, then vanished
- Bounced — rejected at send time
Free deliverability tools
All 15 toolsLatest deliverability news
All news2026-08-20 · Spam Resource
Legacy Google Postmaster Tools is going away — and reputation dashboards with itSenders are losing access to Postmaster Tools v1, per industry reports. The IP and domain reputation dashboards are being retired outright — v2's compliance verdicts are the replacement.2026-08-10 · Ars Technica
A researcher bought noreply.net — and 400,000 corporate emails followedArs Technica reports that misdirected mail to noreply.us and noreply.net — roughly 700 messages a day — has been leaking corporate data to a stranger since late 2024. The fix is basic sending-domain hygiene.2026-07-19 · Spam Resource
APRF: proposed standard would give senders real inbox-placement data from mailbox providersAn IETF draft co-authored at Comcast, Iterable and Google — with Comcast already running a beta — would send domain owners daily aggregate reports of where their mail actually lands.Measured, not estimated
Deliverability Scores come only from our seed-list placement tests. A service without a test shows “Not yet tested” — never a guess.
Two scores, never mixed
The Deliverability Score is measured. The Platform Score is an editorial rubric with published weights. Features never buy deliverability points.
Methodology in the open
The formula, the bands, the verification ladder and the test protocol are published — including our own documented failure modes.
Read the methodology — including our documented failure modes →
The vocabulary
Full glossarySPF·DKIM·DMARC·BIMI·SMTP·MX records·PTR records·Dedicated IP·IP reputation·Domain reputation— defined the way we use them in tests and reviews.