SaaS senders 2026
According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), the top 1 million websites route email through 140 identifiable SaaS senders. The largest is Shopify at 0.84% of SPF-publishing domains. This page ranks them all and links to a full guide for each.
Key facts
- 140 SaaS senders tracked across 637,420 SPF-publishing domains (Tranco top-1M, 2026-09-24).
- Largest: Shopify — 0.84% of SPF-publishing domains.
- Combined share of all tracked SaaS senders: 9.7%.
- Every row links to a data-backed guide; figures update daily.
Beyond dedicated ESPs, a large category of SaaS platforms send email on behalf of the domains that use them — e-commerce (Shopify), marketing automation (Pardot), security awareness (KnowBe4), email-signature management, status pages and more. They show up in SPF the same way ESPs do: as authorized include: domains. Tracking them separately reveals which third-party tools have quietly become part of the world's sending infrastructure.
SaaS senders are worth isolating because they are easy to forget. A domain owner who carefully manages their marketing ESP may have no idea that a signature tool or a helpdesk is also sending under their name — and each unmanaged sender is a potential DMARC-alignment failure and a deliverability liability.
Full ranking — all 140 SaaS senders
Share = % of SPF-publishing domains in the Tranco top-1M. Click any name for its full guide.
| # | Saas Sender | Domains | Share | Δ 30d |
|---|---|---|---|---|
| 1 | Shopify | 5,345 | 0.84% | -0.01 pp |
| 2 | Pardot (Salesforce) | 4,770 | 0.75% | -0.01 pp |
| 3 | CodeTwo Email Signatures 365 | 4,550 | 0.71% | +0.00 pp |
| 4 | KnowBe4 | 3,459 | 0.54% | -0.01 pp |
| 5 | Statuspage (Atlassian) | 2,075 | 0.33% | +0.01 pp |
| 6 | Trustpilot | 1,891 | 0.30% | -0.00 pp |
| 7 | Firebase (Google) | 1,869 | 0.29% | +0.00 pp |
| 8 | Atlassian (Jira/Confluence) | 1,787 | 0.28% | +0.00 pp |
| 9 | BigCommerce | 1,724 | 0.27% | -0.02 pp |
| 10 | Lark / Feishu | 1,306 | 0.20% | +0.01 pp |
| 11 | Sage Intacct | 1,171 | 0.18% | +0.00 pp |
| 12 | NetSuite (Oracle) | 1,151 | 0.18% | +0.00 pp |
| 13 | Oracle Cloud Email | 1,122 | 0.18% | +0.01 pp |
| 14 | Qualtrics | 1,089 | 0.17% | +0.00 pp |
| 15 | WordPress.com / WP Cloud | 1,006 | 0.16% | -0.00 pp |
| 16 | SAP SuccessFactors | 960 | 0.15% | +0.00 pp |
| 17 | Docebo (LMS) | 944 | 0.15% | -0.00 pp |
| 18 | Oracle Cloud | 858 | 0.13% | +0.01 pp |
| 19 | Zoho Books | 715 | 0.11% | +0.00 pp |
| 20 | AFAS | 685 | 0.11% | -0.00 pp |
| 21 | Greenhouse | 622 | 0.10% | -0.00 pp |
| 22 | PayPal Braintree | 571 | 0.09% | +-0.00 pp |
| 23 | ClickDimensions | 568 | 0.09% | -0.00 pp |
| 24 | UKG / UltiPro | 545 | 0.09% | +0.01 pp |
| 25 | Autotask (ConnectWise) | 478 | 0.07% | -0.01 pp |
| 26 | TOPdesk | 474 | 0.07% | +0.00 pp |
| 27 | FormAssembly | 464 | 0.07% | +0.00 pp |
| 28 | Odoo | 447 | 0.07% | +0.00 pp |
| 29 | Zimpel (Cision) | 435 | 0.07% | — |
| 30 | ConnectWise | 428 | 0.07% | -0.00 pp |
| 31 | Freshservice (Freshworks) | 421 | 0.07% | — |
| 32 | HappyFox | 406 | 0.06% | — |
| 33 | Shoptet | 386 | 0.06% | — |
| 34 | Blackboard | 376 | 0.06% | — |
| 35 | ecbeing | 358 | 0.06% | — |
| 36 | k.io (workspace) | 345 | 0.05% | — |
| 37 | Umantis (Haufe HR) | 330 | 0.05% | — |
| 38 | MakeShop | 327 | 0.05% | — |
| 39 | Ex Libris | 314 | 0.05% | — |
| 40 | Chargebee | 314 | 0.05% | — |
| 41 | amoCRM (Kommo) | 312 | 0.05% | — |
| 42 | One.com (DK hosting) | 307 | 0.05% | — |
| 43 | SupportBox (CZ) | 301 | 0.05% | — |
| 44 | Dixa | 293 | 0.05% | — |
| 45 | SynXis (Sabre) | 285 | 0.04% | — |
| 46 | ServiceNow | 284 | 0.04% | — |
| 47 | MerchantPro | 273 | 0.04% | — |
| 48 | Gannett (USA Today) | 270 | 0.04% | — |
| 49 | pair Networks | 268 | 0.04% | — |
| 50 | RetailCRM | 261 | 0.04% | — |
| 51 | Brightspace (D2L) | 256 | 0.04% | — |
| 52 | Alchemer (SurveyGizmo) | 240 | 0.04% | — |
| 53 | rexx systems | 237 | 0.04% | — |
| 54 | Tipalti | 237 | 0.04% | — |
| 55 | DocuClass SaaS | 235 | 0.04% | — |
| 56 | Microsoft Dynamics 365 | 216 | 0.03% | — |
| 57 | Groove | 213 | 0.03% | — |
| 58 | Esker | 206 | 0.03% | — |
| 59 | Zoho Invoice | 205 | 0.03% | — |
| 60 | Autodoc | 204 | 0.03% | — |
| 61 | pair Networks pairlist | 203 | 0.03% | — |
| 62 | Ellucian | 199 | 0.03% | — |
| 63 | User.com | 199 | 0.03% | — |
| 64 | SchoolMessenger | 196 | 0.03% | — |
| 65 | SolarWinds Service Desk | 195 | 0.03% | — |
| 66 | Cvent | 190 | 0.03% | — |
| 67 | Freshsales (Freshworks) | 183 | 0.03% | — |
| 68 | Naviga | 181 | 0.03% | — |
| 69 | Amadeus | 174 | 0.03% | — |
| 70 | Sparkasse Emma | 173 | 0.03% | — |
| 71 | UNAS | 172 | 0.03% | — |
| 72 | Robin | 166 | 0.03% | — |
| 73 | Transact CashNet | 165 | 0.03% | — |
| 74 | Transsmart | 160 | 0.03% | — |
| 75 | EventsAir | 157 | 0.02% | — |
| 76 | Crescendo GiftLegacy | 155 | 0.02% | — |
| 77 | Yardi | 154 | 0.02% | — |
| 78 | CashEdge (Fiserv) | 154 | 0.02% | — |
| 79 | Neto (Maropost Commerce) | 154 | 0.02% | — |
| 80 | Tray | 154 | 0.02% | — |
| 81 | Chargify (Maxio) | 153 | 0.02% | — |
| 82 | UserVoice | 151 | 0.02% | — |
| 83 | PR TIMES | 151 | 0.02% | — |
| 84 | Aventri (Stova) | 150 | 0.02% | — |
| 85 | Toast | 149 | 0.02% | — |
| 86 | Webropol | 149 | 0.02% | — |
| 87 | Cadmium | 146 | 0.02% | — |
| 88 | Newsquest | 146 | 0.02% | — |
| 89 | Gorgias | 142 | 0.02% | — |
| 90 | Ingenie | 138 | 0.02% | — |
| 91 | Cegedim | 137 | 0.02% | — |
| 92 | Watermark | 134 | 0.02% | — |
| 93 | easybill | 132 | 0.02% | — |
| 94 | Echobox | 132 | 0.02% | — |
| 95 | WeFact | 132 | 0.02% | — |
| 96 | Access | 131 | 0.02% | — |
| 97 | Givex | 130 | 0.02% | — |
| 98 | Extole | 128 | 0.02% | — |
| 99 | Pearl | 127 | 0.02% | — |
| 100 | Freshworks Freshservice | 126 | 0.02% | — |
| 101 | MsgApp | 123 | 0.02% | — |
| 102 | Microsoft SharePoint | 121 | 0.02% | — |
| 103 | Squarespace | 120 | 0.02% | — |
| 104 | Mirabel Technologies | 119 | 0.02% | — |
| 105 | Shop-Pro | 115 | 0.02% | — |
| 106 | ADP | 115 | 0.02% | — |
| 107 | SecuTix | 114 | 0.02% | — |
| 108 | Recurly | 114 | 0.02% | — |
| 109 | Netigate | 113 | 0.02% | — |
| 110 | Everbridge | 113 | 0.02% | — |
| 111 | Logicalware | 111 | 0.02% | — |
| 112 | MiniCRM | 111 | 0.02% | — |
| 113 | Hivebrite | 108 | 0.02% | — |
| 114 | Convento | 108 | 0.02% | — |
| 115 | ClickFunnels | 107 | 0.02% | — |
| 116 | GreenGeeks | 105 | 0.02% | — |
| 117 | SuperOffice | 105 | 0.02% | — |
| 118 | TravelClick (Amadeus) | 104 | 0.02% | — |
| 119 | WiseStamp | 103 | 0.02% | — |
| 120 | Kayako | 101 | 0.02% | — |
| 121 | CI Solution | 101 | 0.02% | — |
| 122 | VoterVoice (FiscalNote) | 99 | 0.02% | — |
| 123 | Visualsoft | 99 | 0.02% | — |
| 124 | Zoho Creator | 95 | 0.01% | — |
| 125 | ReCharge | 95 | 0.01% | — |
| 126 | ClearSlide | 85 | 0.01% | — |
| 127 | Workfront (Adobe) | 84 | 0.01% | — |
| 128 | Pantheon | 83 | 0.01% | — |
| 129 | Zoho Analytics | 81 | 0.01% | — |
| 130 | LiveAgent | 71 | 0.01% | — |
| 131 | Xink | 64 | 0.01% | — |
| 132 | Acquia | 64 | 0.01% | — |
| 133 | SurveyMonkey | 60 | 0.01% | — |
| 134 | Digital Insight (NCR) | 54 | 0.01% | — |
| 135 | Hobsons | 44 | 0.01% | — |
| 136 | Jotform | 44 | 0.01% | — |
| 137 | DocuSign | 40 | 0.01% | — |
| 138 | Automattic (WordPress.com / Akismet) | 38 | 0.01% | — |
| 139 | Stripe | 32 | 0.01% | — |
| 140 | InSales | 29 | 0.00% | — |
The hidden-sender problem
Every SaaS platform authorized in your SPF record can send mail that claims to be from your domain. If that mail is not also DKIM-signed and aligned, a strict DMARC policy will quarantine or reject it — breaking legitimate messages. The fix is not to remove the senders but to inventory them, sign them correctly, and monitor DMARC aggregate reports. The list on this page is a good prompt to audit what is sending under your name.
Run a free inbox-placement test across Gmail, Outlook, Yahoo and more — see exactly where your mail lands and why.
Frequently asked questions
What is the most-used SaaS sender in 2026?
Shopify is the most common SaaS sender in the Tranco top-1M, used by 5,345 domains (0.84% of SPF-publishing domains) as of September 24, 2026.
How many SaaS senders are there in the top 1M?
Live Direct Marketing's scan identifies 140 distinct SaaS senders with at least a handful of domains each, as of 2026-09-24.