Embed a free tool on your site

You can put any of these free email and phone tools on your own page: copy its embed code and paste it into your HTML, blog post or page builder. Each one runs in a frame that resizes to fit, works on light and dark pages, and needs no account or API key. Rate limits match the tool pages here.

How do I embed a tool?

Pick a tool below and press Copy code.
Paste it where the tool should appear, in an HTML or custom code block.
Keep the link under the frame: it credits the tool and takes readers to the full guide. The small script resizes the frame and only listens to messages from simpleverifier.com.

Email deliverability tools

Check a domain or sending IP against what Gmail and Yahoo require, see who hosts a domain's mail, and decode bounces.

Email header analyzer

Paste raw headers to see SPF, DKIM and DMARC results, alignment, every hop with its delay, and spam verdicts.

HTML

<iframe src="https://simpleverifier.com/embed/tools/email-header-analyzer" title="Email header analyzer by SimpleVerifier" data-sv-embed="email-header-analyzer" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/email-header-analyzer">Free email header analyzer by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

MX record lookup

Free MX lookup: check the MX records for any domain and see which mail servers accept its email, in priority order, and which provider runs them.

HTML

<iframe src="https://simpleverifier.com/embed/tools/mx-lookup" title="MX record lookup by SimpleVerifier" data-sv-embed="mx-lookup" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/mx-lookup">Free MX record lookup by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

SPF record checker

Free SPF record checker: look up a domain's SPF TXT record, see the raw value, and catch missing records, duplicate records and soft-fail policies.

HTML

<iframe src="https://simpleverifier.com/embed/tools/spf-checker" title="SPF record checker by SimpleVerifier" data-sv-embed="spf-checker" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/spf-checker">Free SPF record checker by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

DMARC record checker

Check any domain's DMARC record: see the raw TXT at _dmarc, the policy (none, quarantine or reject) and what it actually enforces. Free DMARC lookup.

HTML

<iframe src="https://simpleverifier.com/embed/tools/dmarc-checker" title="DMARC record checker by SimpleVerifier" data-sv-embed="dmarc-checker" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/dmarc-checker">Free DMARC record checker by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

DKIM checker

Check DKIM records on any domain, no selector needed: auto-detects common selectors, decodes key length and flags weak, revoked or broken keys. Free.

HTML

<iframe src="https://simpleverifier.com/embed/tools/dkim-checker" title="DKIM checker by SimpleVerifier" data-sv-embed="dkim-checker" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/dkim-checker">Free DKIM checker by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

SPF lookup counter

Expands every include and redirect, counts DNS lookups and void lookups against RFC 7208's limits, and shows which include uses the most.

HTML

<iframe src="https://simpleverifier.com/embed/tools/spf-lookup-counter" title="SPF lookup counter by SimpleVerifier" data-sv-embed="spf-lookup-counter" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/spf-lookup-counter">Free SPF lookup counter by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

UTM builder

Paste a URL, pick an email or SMS preset and get a tagged link that GA4 counts in the right channel. Tag hundreds of URLs at once and download them as a CSV.

HTML

<iframe src="https://simpleverifier.com/embed/tools/utm-builder" title="UTM builder by SimpleVerifier" data-sv-embed="utm-builder" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/utm-builder">Free UTM builder by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

Email list tools

Extract, deduplicate, tidy and syntax-check addresses. These run entirely in your browser.

Email permutator

Turn a name and company domain into the likely email formats, most common first, and check the top ones live.

HTML

<iframe src="https://simpleverifier.com/embed/tools/email-permutator" title="Email permutator by SimpleVerifier" data-sv-embed="email-permutator" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/email-permutator">Free email permutator by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

Disposable email checker

Check whether an address or domain belongs to a known disposable (temporary) email provider.

HTML

<iframe src="https://simpleverifier.com/embed/tools/disposable-email-checker" title="Disposable email checker by SimpleVerifier" data-sv-embed="disposable-email-checker" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/disposable-email-checker">Free disposable email checker by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

Phone number tools

Format, extract and type numbers with Google's open-source numbering-plan data, and count SMS segments, in your browser.

Phone number validator

Check one phone number against its country's numbering plan and get its E.164 format, country and line type.

HTML

<iframe src="https://simpleverifier.com/embed/tools/phone-number-validator" title="Phone number validator by SimpleVerifier" data-sv-embed="phone-number-validator" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/phone-number-validator">Free phone number validator by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

SMS character counter

Type or paste a text message and see characters, GSM-7 or Unicode encoding, segments, and the exact characters that cut your limit from 160 to 70.

HTML

<iframe src="https://simpleverifier.com/embed/tools/sms-character-counter" title="SMS character counter by SimpleVerifier" data-sv-embed="sms-character-counter" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/sms-character-counter">Free SMS character counter by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

Area code lookup

State or province, largest rate centers, time zone and overlays for every North American area code, a reverse search by state or city, and a bulk mode for lists. NANPA and CNAC data.

HTML

<iframe src="https://simpleverifier.com/embed/tools/area-code-lookup" title="Area code lookup by SimpleVerifier" data-sv-embed="area-code-lookup" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/area-code-lookup">Free area code lookup by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

TCPA calling hours checker

Local time for each number from its area code, checked against the federal 8 a.m. to 9 p.m. rule and 19 stricter state rules quoted from statute, with the next allowed time. Not legal advice.

HTML

<iframe src="https://simpleverifier.com/embed/tools/tcpa-calling-hours-checker" title="TCPA calling hours checker by SimpleVerifier" data-sv-embed="tcpa-calling-hours-checker" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/tcpa-calling-hours-checker">Free TCPA calling hours checker by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

Email marketing calculators

Plan cold email capacity and read your bounce numbers against published limits.

Verification cost calculator

Compare what verifying a list costs per 1,000 addresses across 34 vendors' published prices, including what re-verifying costs again.

HTML

<iframe src="https://simpleverifier.com/embed/tools/verification-cost-calculator" title="Verification cost calculator by SimpleVerifier" data-sv-embed="verification-cost-calculator" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/verification-cost-calculator">Free verification cost calculator by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

Email list decay calculator

Enter list size and age and pick a yearly rate (a BLS job-tenure model by role, or your own measured rate) to estimate how many contacts have gone stale.

HTML

<iframe src="https://simpleverifier.com/embed/tools/email-list-decay-calculator" title="Email list decay calculator by SimpleVerifier" data-sv-embed="email-list-decay-calculator" width="100%" height="640" loading="lazy" allow="clipboard-write" style="border:0;width:100%;max-width:760px;display:block"></iframe>
<p style="margin:6px 0 0;font-size:13px"><a href="https://simpleverifier.com/tools/email-list-decay-calculator">Free email list decay calculator by SimpleVerifier</a></p>
<script>(function(){if(window.__svEmbed)return;window.__svEmbed=1;window.addEventListener("message",function(e){if(e.origin!=="https://simpleverifier.com")return;var d=e.data;if(!d||d.type!=="simpleverifier:embed-height"||typeof d.slug!=="string"||typeof d.height!=="number"||!isFinite(d.height))return;var f=document.querySelectorAll("iframe[data-sv-embed]");for(var i=0;i<f.length;i++){if(f[i].contentWindow===e.source){f[i].style.height=Math.min(Math.max(Math.ceil(d.height),200),4000)+"px";}}});})();</script>

How do I embed a tool?

Email deliverability tools

Email list tools

Phone number tools

Email marketing calculators

Clean your next list before it bounces