SendX Review 2026: It Claims 95 Percent Inbox, and Nobody Can Check
The Best: One plan with every feature, unlimited sends from $9.99
The Worst: A 95-98% inbox claim nobody can check
The short version
SendX sells simplicity and it delivers it. “One plan, all features, no tier locks, no per-email fees.” Pricing starts at $9.99 a month for 1,000 contacts with unlimited email sends, and contacts are counted once: “We count unique active contacts (subscribers) only once, regardless of how many segments or lists they’re in.” There is a 60-day money-back guarantee. For a small sender that is a clean, honest shape and cheaper than almost anything in this comparison.
Its users like it. We read all 39 Capterra reviews, the complete population, and the average is 4.6 with customer service at 4.6 as well. The praise is unusually personal: reviewers name individual staff, mention assistance over Zoom, and describe getting answers on Slack.
The problem is the one thing this site exists to check. SendX’s homepage claims “95-98% inbox placement rates across Gmail, Outlook, Yahoo, and Apple Mail”. There is no independent measurement of SendX anywhere, it has never been in a placement panel, and inside its own 39-review corpus three separate reviewers report deliverability problems. One of them, at two stars, writes: “Email delivery to our customers was 20% or less.”
We are not saying the vendor’s figure is false. We are saying it is a marketing claim with nothing behind it that a buyer can verify, sitting in the same body of evidence as three complaints.
Good value and genuinely good support for a small marketing list. Not a relay, not verifiable on deliverability, and not a platform to route application email through. Test with your own list during the 60-day window and keep the receipts.
Who owns SendX, and what SendX is not
SendX is owned by Inturact Capital, a private equity fund, and the man who runs SendX is the man who set that fund up. Trevor Hatfield is named CEO on SendX’s own team page, and his own bio describes the route that “led me down the path of eventually setting up a private equity fund, Inturact Capital, with a couple partners”, then acquiring SendX and SendWorks. Crunchbase carries the transaction as complete and paid in cash, terms undisclosed. Neither source publishes a date, so we do not give one.
The founder is still in the building: Varun Jain is named co-founder and CTO on the same team page. But SendX is now one asset in a fund’s portfolio rather than a founder-run product, and that is the plainest explanation available for the thing that confuses buyers most about it, why two separately sold products share a team, a domain and a deliverability practice.
Which brings us to the two clarifications this fiche owes a reader, because it sits on a site about SMTP.
First, SendX has no SMTP relay. Transactional sending is an add-on delivered through an API. No hostname and no port appear on any SendX page, and we checked the transactional add-on page specifically.
Second, and this is the trap: SendX’s sibling product SendPost does have a relay, at smtp.sendpost.io, and its product page is hosted on sendx.io. They are different products. SendPost’s footer reads “A Product of SendWorks”, while its page describes it as “built by the team of engineers and deliverability experts at SendX”. Same team, separate products, separate credentials. Do not configure a mail client with SendPost’s host and expect it to send from your SendX account.
Snapshot
| Founded | “Founded in 2017, SendX began with a simple yet powerful vision: to democratize email marketing for businesses of all sizes.” No country is stated on any official page. |
|---|---|
| Owner | Inturact Capital, a private equity fund. CEO Trevor Hatfield set that fund up; co-founder and CTO Varun Jain is still in post. Both are named on SendX’s own team page. The transaction date is not published in any source we can read. |
| Pricing model | One plan. Billed on unique active contacts, sends unlimited. “One plan, all features, no tier locks, no per-email fees.” |
| Entry price | “SendX pricing starts at $9.99/month for 1,000 contacts with unlimited email sends.” Annual billing saves 25 percent. |
| Higher tiers | Published, but only to a browser. The grid is a JavaScript slider, so no figure above $9.99 reaches a reader that does not run the script. Read stop by stop on 24 August 2026 the ladder runs to $2,999.99 a month for 1,000,000 contacts; our pricing tab publishes 27 of the 31 stops. Custom pricing above the top stop. |
| Free plan | None. A trial with no card required. |
| Guarantee | “60-day money-back guarantee, conditions apply. Valid for accounts with fewer than 100,000 contacts and fewer than 100,000 emails sent during the period.” |
| SMTP relay | None. Transactional is an API add-on. |
| API | https://api.sendx.io/api/v1/rest, authenticated with an X-Team-ApiKey header |
| SDKs | Six: Python, JavaScript/Node.js, Go, Ruby, Java, PHP |
| Rate limits | Not published. A 429 exists but no number appears in the API reference. |
| Message size, log retention | Neither published. |
| Official MCP | None. No community server exists either. |
| Deliverability claim | Vendor: “95-98% inbox placement rates across Gmail, Outlook, Yahoo, and Apple Mail”. Unverifiable. |
| Verticals served | Ecommerce, SaaS, local businesses, newsletters, publishers, authors, and explicitly casinos and iGaming |
What SendX does well
One plan, everything in it
No feature gating by tier. Every capability is available at $9.99 a month, and you pay only as your contact list grows. Set that against HubSpot, where split-testing a subject line costs $800 a month, or Kit, where automations are absent from the free plan entirely, and the honesty of this model is worth something.
Unlimited sending on top of contact-based billing is the same shape Campaign Monitor charges $19 for and Kit does not offer at all.
Support that reviewers describe by name
A 4.6 customer service sub-score across 39 reviews, and the praise is specific rather than generic. “Great customer support always very quick to answer if I need any assistance.” “Excellent customer service”, from a reviewer describing help delivered over Zoom. “Fast responses on Slack.” One names an individual: “Agni from their team is a rockstar.”
For a company this small, that is the thing worth buying.
Simplicity that people measure in minutes
Capterra rates ease of use at 4.5. One reviewer: “Very easy to use. You can get up and run in 15 mins.” Another, arriving from Mailchimp on cost grounds: “Product is very easy to navigate.”
Deliverability services that some customers clearly get
One five-star reviewer at a gambling operator, a vertical most providers refuse outright, describes what he receives: “list cleaning, warm-up program, and domain reputation monitoring” with “fast responses on Slack”, noting that “onboarding required some time and active participation”. That is a managed-deliverability relationship, not a self-serve product, and it is a real differentiator for senders in hard verticals.
A 60-day money-back window
Longer than anyone else in this comparison, and long enough to run a genuine placement test with your own list before committing. Given that the vendor’s inbox claim cannot be verified any other way, use it.
Where SendX falls short
An inbox placement claim with nothing behind it
The homepage states “95-98% inbox placement rates across Gmail, Outlook, Yahoo, and Apple Mail”. SendX has never appeared in an independent seedlist panel, and the panel that ranked providers has been discontinued. There is no methodology published and no third party has tested it.
Meanwhile, three of the 39 reviews raise delivery problems. The severest, at two stars: “Email delivery to our customers was 20% or less.” A four-star reviewer: “Faces issue with email deliverability.” Another: “Need a better deliverability manager.” And a fourth reports the symptom without the diagnosis: “emails did not go but we did not know why.”
Three complaints in 39 is 8 percent, which on its own is unremarkable. Against a claim of 95 to 98 percent it is worth putting in front of a buyer.
Two reviewers describe being unable to cancel
A small cluster, and we report it as a counted observation rather than a finding about the company. The one-star review: an account deleted without notification or refund, with the reviewer unable to log back in after resetting a password twice. The two-star review, in its cons field: “They don’t allow you to cancel your account or stop billing.”
Two of 39 is 5 percent and both are in the bottom of the distribution. We would keep the cancellation confirmation.
The company publishes two different sets of numbers about itself
SendX’s homepage says it is “trusted by 3,000+ businesses to deliver over 4.4 billion emails”. Its about page says “50K+ Active Users” and “1B+ Emails Sent”. Both are official pages. Three thousand businesses and fifty thousand active users are not the same claim, and 4.4 billion and 1 billion emails are not the same figure. We quote both and neither on its own.
Nor is much else published. The about page names no founders, states no country and gives no headcount. Third-party databases place the company in India; SendX does not say so itself, so neither do we.
Nothing a developer needs to size an integration is published
No API rate limit. No maximum message size. No log retention period. The API reference documents a 429 response without a number attached. For a platform whose API is a selling point, that is three blanks where MailerSend publishes precise figures for all of them.
No SMTP relay and no MCP server of any kind
Neither an official MCP server nor a community one exists for SendX. Searching returns servers for SendGrid, Mailgun and generic IMAP, and nothing for this platform. Combined with the absent relay, that means SendX is a marketing tool you drive through its own interface or a REST API, and nothing else.
The price ladder is real, and the page will not show it to you
The pricing grid renders through JavaScript. Nothing above $9.99 appears in the HTML SendX serves, so a comparison tool, a cached snapshot or an AI assistant reading the page will report one figure for a platform whose published ladder reaches $2,999.99 a month. The ladder does exist: we read it stop by stop on 24 August 2026 and publish 27 of the 31 stops, including the step where 20,000 contacts costs $119.99 against $79.99 at 15,000, a 50 percent jump for 33 percent more contacts.
That is a narrower complaint than not publishing at all, and it is worth stating narrowly. The number is disclosed. The page simply refuses to serve it to anything that does not execute the script.
What real users actually say
Capterra holds 39 reviews for SendX (product ID 158112; an older listing under 224747 is obsolete) and we read all 39. This is a complete population rather than a sample, so the shares below describe everyone who has reviewed it there. The distribution runs heavily to five stars, with one one-star and one two-star review.
What they praise
- Support. The dominant theme, and unusually personal.
- Price against Mailchimp. Several arrived on cost grounds and stayed.
- Simplicity. “Up and run in 15 mins.”
- Drip campaigns and segmentation. Named repeatedly as sufficient.
- Deliverability services. Warm-up, list cleaning and reputation monitoring, for customers who need them.
What they criticise
- Deliverability, 3 rows. Including one describing 20 percent or less.
- Cancellation, 2 rows. Both at the bottom of the distribution.
- Reporting and analytics. “No proper Analytics and reporting.”
- Integrations. “Very limited integration.”
- Templates and autosave. Small, repeated interface gaps.
The cluster that points both ways
Deliverability is the one theme in this corpus where the same subject produces the best and the worst rows, and the split is not random.
Three of the 39 report delivery failing, one of them severely: “Email delivery to our customers was 20% or less.” One of the 39, a five-star review from a gambling operator, describes the opposite experience in unusual detail: “list cleaning, warm-up program, and domain reputation monitoring”, “fast responses on Slack”, and “onboarding required some time and active participation”.
Read together they describe one platform with two products in it. There is a self-serve tool, where your sending reputation is your own problem and three reviewers found that out. And there is a managed relationship, where a human warms your domain and watches your reputation, which is what the operator in the hardest vertical on the list is actually buying. The vendor’s 95 to 98 percent claim is quoted for both and earned, at most, by the second. Ask at signup which one you are getting, because the price is the same and the outcome is not.
One structural detail worth knowing
Two independent reviewers name a native Amazon SES integration as a reason they chose SendX: “seamless integration with Amazon’s SES”. That is a genuinely useful capability, letting you use SendX’s interface and automations while sending through your own SES account at $0.10 per thousand. It also means the deliverability you get in that configuration is yours and Amazon’s rather than SendX’s, which is worth understanding before reading either the vendor’s claim or the complaints above.
Ratings breakdown
Six categories, each out of 10, judged against the same evidence rules on every platform we cover. The overall is the unweighted arithmetic mean, rounded to one decimal: 8.0 + 6.0 + 5.0 + 8.0 + 7.5 + 5.0 = 39.5, divided by 6, equals 6.6.
Ease of use, 8.0. A 4.5 Capterra ease sub-score and a corpus that measures onboarding in minutes.
Automation, 6.0. Drip campaigns, tags, segments and triggers, adequate for the audience it serves. Reviewers report triggers being hard to understand and no autosave while building.
Deliverability, 5.0. An unverifiable vendor claim, no independent measurement of any kind, and three of 39 reviews reporting problems including one severe. Real managed-deliverability services exist for customers who need them, which is why this is not lower.
Support, 8.0. A 4.6 customer service sub-score and the most personal praise in this whole project, naming individuals and channels.
Pricing value, 7.5. $9.99 for 1,000 contacts with unlimited sends and every feature unlocked, plus a 60-day guarantee. Held down by a ladder no static reader can see, the 50 percent step between 15,000 and 20,000 contacts, and two cancellation complaints.
API and MCP, 5.0. A REST API with six SDKs and a clean auth header. Held down hard by no published rate limit, no message size, no log retention, no SMTP relay and no MCP server of any kind.
Who should use SendX, and who should not
SendX is the right call for
Look elsewhere if
Third-party validation
| Source | Score | Reviews | What it covers |
|---|---|---|---|
| G2 | 4.6 / 5 | 48 | Software buyers rating features. Read 27 August 2026. |
| Capterra | 4.6 / 5 | 39 | Ease of use 4.5, customer service 4.6. The complete population, all 39 read on 27 August 2026, product ID 158112. An older listing under 224747 is obsolete. |
| Trustpilot | N/A | None | No verified listing for SendX. |
| Independent inbox placement | N/A | None | SendX has never appeared in a seedlist panel. The vendor’s 95 to 98 percent figure is its own. |
On most platforms we cover, G2 and Capterra disagree with Trustpilot, and the gap is informative: G2 and Capterra collect people rating software features, Trustpilot collects people who have had a billing or support experience worth telling a stranger about. Both are real, and the useful question is which of the two experiences you are going to have.
SendX has no Trustpilot listing at all, so that second channel is simply missing. Two scores agree at 4.6 and nothing contradicts them, not because the contradiction was tested and failed, but because the venue where it would have been recorded does not exist for this vendor. The two cancellation complaints and the three delivery complaints in this review are the whole of the negative public record, and they are visible only because someone read all 39 rows rather than the average.
Top 3 alternatives
| Alternative | Our score | Take it instead if |
|---|---|---|
| MailerLite | 7.4 | You want the same simplicity at a similar price with a measured 89.8 percent inbox placement, a real free plan and a 4.8 customer service score. |
| EmailOctopus | 7.1 | Cheapest credible paid tier in the category, with the best-loved sub-scores on Capterra at 4.7 and 4.8. |
| Brevo | 7.7 | You need a real SMTP relay in the same account, billed on sends rather than contacts. |
Continue reading
- SendX pricing, the single plan and what is not published
- SendX API, the v1 REST surface and SDKs
- SendX integrations
- SendPost review, the sibling product that does have a relay
- MailerLite review
- EmailOctopus review
Frequently asked questions
How much does SendX cost?
Pricing starts at $9.99 a month for 1,000 contacts with unlimited email sends. There is one plan with every feature included, billed on unique active contacts counted once regardless of how many lists they appear on, with 25 percent off for annual billing and custom pricing above 500,000 contacts. There is no free plan, only a trial, and a 60-day money-back guarantee applies to accounts under 100,000 contacts and 100,000 emails. Prices above the entry tier are not published on the pricing page.
Does SendX have SMTP?
No. SendX offers transactional email as an API add-on and publishes no SMTP hostname or port. Its sibling product SendPost does offer an SMTP relay, at smtp.sendpost.io, and its product page is hosted on the sendx.io domain, which makes the two easy to confuse. They are separate products with separate credentials.
Is SendX good for deliverability?
The vendor claims 95 to 98 percent inbox placement across Gmail, Outlook, Yahoo and Apple Mail. No independent panel has ever tested SendX and no methodology is published, so that figure cannot be checked. Within its own 39 reviews, three report delivery problems including one describing 20 percent or less. It does offer real managed services, warm-up programmes, list cleaning and reputation monitoring, to customers who need them. Use the 60-day guarantee to test with your own list.
What are the best SendX alternatives?
MailerLite at 7.4 for the same simplicity with a measured placement figure and a real free plan. EmailOctopus at 7.1 for the cheapest credible paid tier in the category. Brevo at 7.7 if you need an SMTP relay in the same account. All three are reviewed here with the same six categories.
Changelog
| Date | Change |
|---|---|
| 15 September 2026 | Two corrections and two additions. Corrected: this review previously stated that SendX’s founder names are not published on any official page, and that the price above $9.99 is not published. Both were wrong. SendX’s own team page names Varun Jain as co-founder and CTO and Trevor Hatfield as CEO, and the full price ladder to $2,999.99 a month was read stop by stop on 24 August 2026 and is published on our pricing tab. The prices are not in the HTML SendX serves, which is a different and smaller complaint, now stated as such. Added: the ownership of SendX by the private equity fund Inturact Capital, sourced from the fund founder’s own bio and the Crunchbase transaction record, with no date because neither source publishes one; a third-party validation section; and the mixed cluster the review was missing. No rating was changed. |
| 27 August 2026 | First publication. All 39 Capterra reviews read, the complete population. Pricing, guarantee terms, API base and auth header verified twice against SendX’s own pages. The absence of any SMTP hostname or port confirmed on the transactional add-on page specifically. The company’s two contradictory self-descriptions published side by side. No rate limit, message size or log retention is published and none is invented here. Search volumes measured for the United States. |
This review follows our email infrastructure testing methodology. We disclose affiliate relationships in our editorial independence policy.
