[{"data":1,"prerenderedAt":345},["ShallowReactive",2],{"vs-list":3},[4,104,164,227,286],{"id":5,"title":6,"body":7,"comparison":65,"competitor":94,"description":95,"extension":96,"meta":97,"navigation":98,"path":99,"seo":100,"stem":101,"tagline":102,"__hash__":103},"vs\u002Fvs\u002Fmailhog.md","Mailcatcher vs. MailHog",{"type":8,"value":9,"toc":57},"minimark",[10,15,19,23,31,35,44,47,51],[11,12,14],"h2",{"id":13},"what-is-mailhog","What is MailHog?",[16,17,18],"p",{},"MailHog is a self-hosted, open-source SMTP test server written in Go. For years it was the default choice for catching outgoing emails in local development, with a simple web UI and API for viewing captured messages.",[11,20,22],{"id":21},"where-mailhog-shines","Where MailHog shines",[16,24,25,26,30],{},"MailHog is still perfectly capable of catching an email and showing you its HTML, text, and headers, and plenty of existing projects already have it wired into their ",[27,28,29],"code",{},"docker-compose.yml",". If it's already in your stack and doing the job, there's no urgent reason to rip it out.",[11,32,34],{"id":33},"where-mailcatcher-differs","Where Mailcatcher differs",[16,36,37,38,43],{},"The honest caveat with MailHog is its development pace: commits and releases have slowed to a crawl, several long-standing issues remain unresolved, and its own ecosystem has largely moved on — ",[39,40,42],"a",{"href":41},"\u002Fvs\u002Fmailpit","Mailpit"," was built specifically as a maintained, faster replacement. Beyond that, MailHog shares the same limitations as other self-hosted single-inbox tools: no team accounts, no permissions, and no way to share access without exposing the instance yourself.",[16,45,46],{},"Mailcatcher is hosted and actively developed, with projects, users, and permissions built in, so there's no server to maintain or worry about falling out of date.",[11,48,50],{"id":49},"which-should-you-choose","Which should you choose?",[16,52,53,54,56],{},"If MailHog is already running and meeting your needs, there's no rush to switch. For anything new, we'd point you toward ",[39,55,42],{"href":41}," if you want a self-hosted, actively maintained option, or Mailcatcher if you'd rather not run and secure the server yourself.",{"title":58,"searchDepth":59,"depth":59,"links":60},"",2,[61,62,63,64],{"id":13,"depth":59,"text":14},{"id":21,"depth":59,"text":22},{"id":33,"depth":59,"text":34},{"id":49,"depth":59,"text":50},[66,70,74,78,81,85,88,91],{"feature":67,"mailcatcher":68,"competitor":69},"Deployment","Hosted SaaS","Self-hosted (Docker or a single binary)",{"feature":71,"mailcatcher":72,"competitor":73},"Setup","Point your SMTP settings at us","Install, run, and keep the server up",{"feature":75,"mailcatcher":76,"competitor":77},"Team accounts & permissions","Yes","No",{"feature":79,"mailcatcher":76,"competitor":77,"note":80},"Shared access without exposing your network","Remote access means running your own reverse proxy or tunnel",{"feature":82,"mailcatcher":83,"competitor":84},"Multiple isolated projects","Unlimited","One shared inbox per instance",{"feature":86,"mailcatcher":76,"competitor":76,"note":87},"HTML\u002Ftext preview, headers & attachments","Basic but functional",{"feature":89,"mailcatcher":77,"competitor":76,"note":90},"Open source \u002F full control","Free and self-hosted",{"feature":92,"mailcatcher":76,"competitor":77,"note":93},"Active development","Development has largely stalled; Mailpit was created as its maintained successor","MailHog","How Mailcatcher compares to MailHog for catching test emails, and why most teams starting fresh now look at Mailpit or a hosted option instead.","md",{},true,"\u002Fvs\u002Fmailhog",{"title":6,"description":95},"vs\u002Fmailhog","A long-time favorite for local SMTP testing, but the project has been largely unmaintained for years.","KM8UkKMFD9z3njnw5cVnaoL_6I8mRkZO9YPi6wMqr-s",{"id":105,"title":106,"body":107,"comparison":146,"competitor":42,"description":158,"extension":96,"meta":159,"navigation":98,"path":41,"seo":160,"stem":161,"tagline":162,"__hash__":163},"vs\u002Fvs\u002Fmailpit.md","Mailcatcher vs. Mailpit",{"type":8,"value":108,"toc":140},[109,113,120,124,127,129,132,135,137],[11,110,112],{"id":111},"what-is-mailpit","What is Mailpit?",[16,114,115,116,119],{},"Mailpit is a free, open-source SMTP test server written in Go. It ships as a single binary or Docker image, catches everything sent to it, and shows you the result in a clean, fast web interface. It was built as a modern replacement for MailHog and has become a popular default in local ",[27,117,118],{},"docker-compose"," setups.",[11,121,123],{"id":122},"where-mailpit-shines","Where Mailpit shines",[16,125,126],{},"Mailpit is well-built software. It's lightweight, starts in milliseconds, and its message inspector is one of the better ones in this category. Because it's a single binary with no external dependencies, it's easy to drop into a CI pipeline or a local dev environment, and its REST API makes it scriptable for automated tests. It's also completely free, with no account or usage limits — you just need somewhere to run it.",[11,128,34],{"id":33},[16,130,131],{},"Mailpit gives you one shared inbox per running instance, with no built-in concept of separate projects, user accounts, or permissions. That's fine for a single developer on their own machine. It becomes friction once a team needs to look at the same captured emails: someone has to expose the instance, manage access to it, and keep it running and updated.",[16,133,134],{},"Mailcatcher is hosted, so there's no server to run or patch. Projects, users, and permissions are built in, so a designer or QA engineer can log in and see exactly the emails they're meant to, without SSH access or a shared instance URL.",[11,136,50],{"id":49},[16,138,139],{},"If you're working solo, testing locally, and you're comfortable maintaining a small piece of infrastructure, Mailpit is a strong, free choice. If your team needs to share captured emails across developers, QA, or clients without standing up and securing your own server, Mailcatcher's hosted model removes that step entirely.",{"title":58,"searchDepth":59,"depth":59,"links":141},[142,143,144,145],{"id":111,"depth":59,"text":112},{"id":122,"depth":59,"text":123},{"id":33,"depth":59,"text":34},{"id":49,"depth":59,"text":50},[147,148,149,150,151,152,154,156],{"feature":67,"mailcatcher":68,"competitor":69},{"feature":71,"mailcatcher":72,"competitor":73},{"feature":75,"mailcatcher":76,"competitor":77},{"feature":79,"mailcatcher":76,"competitor":77,"note":80},{"feature":82,"mailcatcher":83,"competitor":84},{"feature":86,"mailcatcher":76,"competitor":76,"note":153},"Mailpit's inspector is fast and well built",{"feature":89,"mailcatcher":77,"competitor":76,"note":155},"Free, MIT-licensed, runs anywhere",{"feature":92,"mailcatcher":76,"competitor":76,"note":157},"Actively maintained, built as the spiritual successor to MailHog","How Mailcatcher compares to Mailpit for catching and previewing test emails, including team access, project organization, and hosting.",{},{"title":106,"description":158},"vs\u002Fmailpit","The modern, actively maintained successor to MailHog — excellent for solo local development, but you're on your own for team access and infrastructure.","eUrWRjc86t_zBNyu2mY1n7EZR4hnCwN_1oNlv5v4KHM",{"id":165,"title":166,"body":167,"comparison":199,"competitor":219,"description":220,"extension":96,"meta":221,"navigation":98,"path":222,"seo":223,"stem":224,"tagline":225,"__hash__":226},"vs\u002Fvs\u002Fmailtrap.md","Mailcatcher vs. Mailtrap",{"type":8,"value":168,"toc":193},[169,173,176,180,183,185,188,190],[11,170,172],{"id":171},"what-is-mailtrap","What is Mailtrap?",[16,174,175],{},"Mailtrap is a hosted email-testing platform: emails from your app are sent to Mailtrap over SMTP or API and land in a virtual inbox instead of a real one. Alongside testing, it also offers a separate transactional email-sending product.",[11,177,179],{"id":178},"where-mailtrap-shines","Where Mailtrap shines",[16,181,182],{},"Mailtrap's standout feature is deliverability analysis — spam scoring and blacklist checks built directly into the inbox view. If you regularly need to verify that marketing or transactional emails will actually reach the inbox and not get flagged as spam, that's a useful, purpose-built capability that Mailcatcher doesn't try to replicate.",[11,184,34],{"id":33},[16,186,187],{},"Mailcatcher is focused on the day-to-day developer workflow: unlimited projects on every plan (including free), straightforward team permissions, and a simple setup with no separate sending product to navigate. Mailtrap's free plan caps how many projects and test emails you get before you need to upgrade, which can be limiting if you're testing across several apps or environments at once.",[11,189,50],{"id":49},[16,191,192],{},"If spam-score and blacklist testing is a priority — say, you're validating marketing campaigns — Mailtrap's dedicated deliverability tools are worth a look. If you mainly need a straightforward, unlimited way to organize and share captured emails across projects and environments during development, Mailcatcher is built around exactly that.",{"title":58,"searchDepth":59,"depth":59,"links":194},[195,196,197,198],{"id":171,"depth":59,"text":172},{"id":178,"depth":59,"text":179},{"id":33,"depth":59,"text":34},{"id":49,"depth":59,"text":50},[200,201,203,205,208,209,212,215],{"feature":67,"mailcatcher":68,"competitor":68},{"feature":71,"mailcatcher":72,"competitor":202},"Sign up, then update your SMTP settings",{"feature":75,"mailcatcher":76,"competitor":76,"note":204},"Available on Mailtrap's paid team plans",{"feature":82,"mailcatcher":206,"competitor":207},"Unlimited on every plan","Capped on the free plan",{"feature":86,"mailcatcher":76,"competitor":76},{"feature":210,"mailcatcher":77,"competitor":76,"note":211},"Spam score & blacklist checks","A genuine Mailtrap strength for deliverability testing",{"feature":213,"mailcatcher":77,"competitor":77,"note":214},"Open source \u002F self-hosted option","Both are closed-source hosted platforms",{"feature":216,"mailcatcher":217,"competitor":218},"Free tier","Unlimited projects, 10 emails per project","Limited monthly test emails and inboxes","Mailtrap","How Mailcatcher compares to Mailtrap for hosted email testing, including team plans, project limits, and spam\u002Fdeliverability analysis.",{},"\u002Fvs\u002Fmailtrap",{"title":166,"description":220},"vs\u002Fmailtrap","The closest thing to Mailcatcher — another hosted email-testing SaaS, with strong spam and deliverability analysis but stricter free-tier limits.","xDvJBKxnEqhE0GSUid55TD2QCr5-p7HsTB3HhgqaoAY",{"id":228,"title":229,"body":230,"comparison":265,"competitor":278,"description":279,"extension":96,"meta":280,"navigation":98,"path":281,"seo":282,"stem":283,"tagline":284,"__hash__":285},"vs\u002Fvs\u002Fpapercut-smtp.md","Mailcatcher vs. Papercut SMTP",{"type":8,"value":231,"toc":259},[232,236,239,243,246,248,251,254,256],[11,233,235],{"id":234},"what-is-papercut-smtp","What is Papercut SMTP?",[16,237,238],{},"Papercut SMTP is a free, open-source dummy SMTP server with a lightweight desktop interface for catching and viewing test emails. It's best known as a simple Windows-first tool, though builds exist for other platforms too.",[11,240,242],{"id":241},"where-papercut-smtp-shines","Where Papercut SMTP shines",[16,244,245],{},"It's refreshingly easy to get running: install it, point your app's SMTP settings at it, and captured emails show up in the desktop window immediately. For a single developer who wants something minimal and familiar in a Windows-centric stack, that simplicity is the whole appeal.",[11,247,34],{"id":33},[16,249,250],{},"Papercut SMTP gives you one inbox on one machine, with no accounts, permissions, or way to share what's been captured with anyone else — someone would need access to that machine to see the emails. It also isn't built with cross-platform teams or CI environments in mind the way a hosted or Docker-based tool is.",[16,252,253],{},"Mailcatcher is hosted and works the same way regardless of your OS, with unlimited projects and team permissions so captured emails can be shared with whoever needs to see them, not just whoever is at that desk.",[11,255,50],{"id":49},[16,257,258],{},"If you're a solo developer on Windows who wants a no-fuss desktop tool for local testing, Papercut SMTP does the job well. If you need to organize emails by project or share them with teammates who aren't on the same machine, Mailcatcher is built for that.",{"title":58,"searchDepth":59,"depth":59,"links":260},[261,262,263,264],{"id":234,"depth":59,"text":235},{"id":241,"depth":59,"text":242},{"id":33,"depth":59,"text":34},{"id":49,"depth":59,"text":50},[266,268,270,271,272,274,276],{"feature":67,"mailcatcher":68,"competitor":267},"Self-hosted desktop app or service",{"feature":71,"mailcatcher":72,"competitor":269},"Install and run the desktop app or service",{"feature":75,"mailcatcher":76,"competitor":77},{"feature":79,"mailcatcher":76,"competitor":77},{"feature":82,"mailcatcher":83,"competitor":273},"Single shared inbox",{"feature":86,"mailcatcher":76,"competitor":76,"note":275},"Straightforward and easy to use",{"feature":89,"mailcatcher":77,"competitor":76,"note":277},"Free to run yourself","Papercut SMTP","How Mailcatcher compares to Papercut SMTP for catching test emails, including team access, project organization, and hosting.",{},"\u002Fvs\u002Fpapercut-smtp",{"title":229,"description":279},"vs\u002Fpapercut-smtp","A simple, free desktop SMTP test server — best for solo development, not built for teams or remote access.","rVUsX5Yen3Py68bEZ99Q_eaXwO8a7B7Yw2gdcdDp1tc",{"id":287,"title":288,"body":289,"comparison":324,"competitor":337,"description":338,"extension":96,"meta":339,"navigation":98,"path":340,"seo":341,"stem":342,"tagline":343,"__hash__":344},"vs\u002Fvs\u002Fsmtp4dev.md","Mailcatcher vs. smtp4dev",{"type":8,"value":290,"toc":318},[291,295,298,302,305,307,310,313,315],[11,292,294],{"id":293},"what-is-smtp4dev","What is smtp4dev?",[16,296,297],{},"smtp4dev is a free, open-source SMTP test server built on .NET. It runs cross-platform (Docker, Windows, Linux, macOS) and catches outgoing mail for local inspection, alongside some IMAP retrieval and message-relay options.",[11,299,301],{"id":300},"where-smtp4dev-shines","Where smtp4dev shines",[16,303,304],{},"Beyond the usual HTML\u002Ftext preview, smtp4dev exposes the raw SMTP session log — the actual protocol exchange between your app and the server. That's a real advantage if you're debugging an SMTP client implementation or a tricky connection issue, rather than just checking what an email looks like.",[11,306,34],{"id":33},[16,308,309],{},"smtp4dev, like most self-hosted catchers, gives you a single shared inbox per instance with no accounts or permissions — fine for one developer, awkward for a team. Someone still has to run the server, keep it updated, and expose it if anyone else needs access.",[16,311,312],{},"Mailcatcher trades that raw protocol-level detail for a hosted, multi-project setup: unlimited projects, team accounts with permissions, and nothing to install or maintain.",[11,314,50],{"id":49},[16,316,317],{},"If you're troubleshooting SMTP protocol behavior itself and want full control over a self-hosted tool, smtp4dev is a good, actively developed option. If you want your team to share and organize captured emails across projects without running infrastructure, Mailcatcher is the more direct fit.",{"title":58,"searchDepth":59,"depth":59,"links":319},[320,321,322,323],{"id":293,"depth":59,"text":294},{"id":300,"depth":59,"text":301},{"id":33,"depth":59,"text":34},{"id":49,"depth":59,"text":50},[325,327,328,329,330,331,332,335],{"feature":67,"mailcatcher":68,"competitor":326},"Self-hosted (Docker, Windows service, or binary)",{"feature":71,"mailcatcher":72,"competitor":73},{"feature":75,"mailcatcher":76,"competitor":77},{"feature":79,"mailcatcher":76,"competitor":77,"note":80},{"feature":82,"mailcatcher":83,"competitor":84},{"feature":86,"mailcatcher":76,"competitor":76},{"feature":333,"mailcatcher":77,"competitor":76,"note":334},"Raw SMTP session\u002Fprotocol logs","Useful when you're debugging the SMTP conversation itself, not just the email content",{"feature":89,"mailcatcher":77,"competitor":76,"note":336},"Free, self-hosted, cross-platform","smtp4dev","How Mailcatcher compares to smtp4dev for testing outgoing emails, including SMTP session inspection, team access, and hosting.",{},"\u002Fvs\u002Fsmtp4dev",{"title":288,"description":338},"vs\u002Fsmtp4dev","A solid open-source, self-hosted SMTP test server with raw protocol-level logging — no team features or hosting included.","VrqV_ag6ZS1n6b_DO7jgsHWgQgxdnSl593otqHQfbrI",1788004068091]