{"id":"pg_behgzdxnkegr","property_id":"prp_pfcr5h8cztsp","domain_id":"dom_gkgeprhezjg4wq","root_domain":"smashsend.com","locale":"en","url":"https://smashsend.com/features/spam-protection","url_hash":"fc013414b007ca9b9c8f976b0e534e630479e7d9806551f553620d9d5097d4c5","path":"/features/spam-protection","depth":1,"canonical_url":"https://smashsend.com/features/spam-protection","canonical_page_id":null,"page_type":"other","page_type_guess":"other","state":"indexed","skip_reason":null,"priority":"0.9","discovered_via":"sitemap","first_seen_at":"2026-08-28T03:07:01.092Z","last_seen_at":"2026-09-27T04:12:15.317Z","http_status":200,"content_hash":"42d12f959a2983901fec8a212541efcea71d377042f85bd3e5dc2d4804c32168","title":"Email Spam Protection & List Hygiene - SMASHSEND","description":"Keep bots, typos and disposable addresses off your list. Captcha, double opt-in, duplicate prevention and email verification, built into every form.","author":null,"published_at":null,"modified_at":null,"word_count":313,"reading_time_sec":85,"lang_detected":"en","images":[],"links_out":null,"markdown_source":"readability","refresh_interval":"monthly","last_fetched_at":"2026-09-27T04:08:53.748Z","next_refresh_at":"2026-10-27T04:08:53.748Z","runs_count":2,"changes_count":0,"last_changed_at":null,"fail_count":0,"last_error":null,"created_at":"2026-08-28T03:07:01.092Z","updated_at":"2026-08-28T03:07:01.092Z","inlinks":142,"inlinks_body":0,"outlinks":37,"outlinks_external":10,"anchor_terms":[],"template_score":"1.00000000000000000000","cash":"4.903794971780895535","cash_total":"8.7243432112061497984","pagerank":"0.00180450922845372","is_orphan":false,"link_confirmed":true,"discovered_wave":0,"embedded_hash":null,"embedded_at":null,"domain_name":null,"brand_color":null,"domain_rank":null,"spam_score":null,"markdown":"Spam protection\n\n## A clean list is a deliverable list\n\nBad addresses are the fastest way to wreck your sender reputation. SMASHSEND filters bots, typos and duplicates at signup, before they ever reach your list.\n\n## Protection at every step\n\n### Bot filtering\n\nA captcha plus a hidden honeypot field stops automated signups without adding friction for real people.\n\n### Typo detection\n\nCommon domain typos like gmial.com are caught at signup, so you do not lose a real subscriber to a slip.\n\n### Double opt-in\n\nRequire a confirmation click before an address counts. The single most effective way to keep a list clean.\n\n### Duplicate prevention\n\nThe same address cannot join twice, which keeps your counts honest and your referral program fair.\n\n### Origin allowlisting\n\nRestrict which domains may submit to your form, so nobody can post to it from somewhere else.\n\n### Submission limits\n\nCap how many entries a form accepts, and close it automatically when you hit the number.\n\n## Related reading\n\n-   [Why use a subdomain for email marketing](https://smashsend.com/support/why-use-a-subdomain-for-email-marketing)\n-   [Tips to increase deliverability and avoid spam](https://smashsend.com/blog/tips-increase-email-deliverability-and-avoid-spam-folder)\n-   [Automated IP and domain warmup](https://smashsend.com/support/automated-ip-and-domain-warmup)\n-   [List-Unsubscribe header](https://smashsend.com/support/list-unsubscribe-header)\n-   [Email marketing for web3 and crypto](https://smashsend.com/features/web3-email-marketing)\n-   [Looking for a Mailchimp alternative?](https://smashsend.com/compare/mailchimp-alternative)\n\n## Frequently asked questions\n\nWhy does spam protection matter for deliverability?\n\nMailbox providers judge you on how recipients react. Bot addresses and typos produce hard bounces and zero engagement, which pushes your reputation down and your future email into spam.\n\nDoes double opt-in cost me subscribers?\n\nIt lowers your raw signup count and raises the quality of what remains. Because unconfirmed addresses are the ones that bounce and never open, most senders see better inbox placement overall.\n\nCan I check addresses I already have?\n\nYes. Use the free email spell checker to catch typos in an existing list before you import it.\n\n## Protect your list from day one\n\nTurn on spam protection when you build your first form. It costs nothing and saves your reputation.\n\n[Start free](https://app.smashsend.com/signup)","storage":{"htmlKey":"stealpage/html/smashsend.com/pg_behgzdxnkegr/run_-yrtxrrrpgys.html.gz","markdownKey":"stealpage/md/smashsend.com/pg_behgzdxnkegr/run_-yrtxrrrpgys.md.gz"},"facets":null,"assets":[{"kind":"image","src_url":"https://smashsend.com/ogs/home.png","r2_key":null,"alt":null,"caption":null,"width":null,"height":null,"is_hero":true,"zone":"main"},{"kind":"image","src_url":"https://smashsend.com/_next/static/media/smashsend_dark.da05b6ec.svg","r2_key":null,"alt":"SMASHSEND email marketing - The #1 Email Marketing Tool that turns emails into revenue","caption":null,"width":135,"height":30,"is_hero":false,"zone":"unknown"},{"kind":"image","src_url":"https://smashsend.com/dashboard/integrations/zapier_icon_filled.png","r2_key":null,"alt":"Zapier","caption":null,"width":20,"height":20,"is_hero":false,"zone":"nav"},{"kind":"image","src_url":"https://smashsend.com/dashboard/integrations/mailchimp_icon.png","r2_key":null,"alt":"Mailchimp","caption":null,"width":20,"height":20,"is_hero":false,"zone":"nav"},{"kind":"image","src_url":"https://smashsend.com/dashboard/integrations/webhooks_icon_gradient.png","r2_key":null,"alt":"Webhooks","caption":null,"width":20,"height":20,"is_hero":false,"zone":"nav"},{"kind":"image","src_url":"https://smashsend.com/dashboard/integrations/events.png","r2_key":null,"alt":"Events API","caption":null,"width":20,"height":20,"is_hero":false,"zone":"nav"},{"kind":"image","src_url":"https://smashsend.com/_next/image?url=%2Favatar-profile.png&w=3840&q=75","r2_key":null,"alt":"Jorge Ferreiro","caption":null,"width":null,"height":null,"is_hero":false,"zone":"nav"},{"kind":"image","src_url":"https://smashsend.com/_next/image?q=75&url=%2Favatar-profile.png&w=3840","r2_key":null,"alt":"Jorge Ferreiro","caption":null,"width":null,"height":null,"is_hero":false,"zone":"nav"},{"kind":"image","src_url":"https://smashsend.com/_next/static/media/smashsend_light.be8a3849.svg","r2_key":null,"alt":"SMASHSEND email marketing - The #1 Email Marketing Tool that turns emails into revenue","caption":null,"width":171,"height":38,"is_hero":false,"zone":"footer"},{"kind":"image","src_url":"https://smashsend.com/marketing/legal/gdpr_compliance.png","r2_key":null,"alt":"SOC2","caption":null,"width":null,"height":50,"is_hero":false,"zone":"footer"}],"shots":[],"history":[{"id":"run_-yrtxrrrpgys","started_at":"2026-09-27T04:08:53.741Z","http_status":200,"fetcher":"direct","changed":false,"diff":{"added":0,"removed":17,"similarity":null},"word_count":313},{"id":"run_srwkcwxeczgx","started_at":"2026-08-28T03:10:37.706Z","http_status":200,"fetcher":"direct","changed":false,"diff":null,"word_count":330}],"citedBy":[]}