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Post your project for free and connect with skilled SMTP Experts ready to start today. Compare bids, ratings and portfolios, and only pay when you're happy with the work.
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7.9
7.9
100%
Villa De Merlo, Argentina
$25 USD per hour
I started with BeOS in 2002, because of a friend, who showed me something other than Windows, Always I worked repair PC & Laptops. Now I have more 10 years of experience in Server Linux. I can manager servers dedicated, servesr VPS, servers shared, etc. Setup and management you server; Apache/Nginx/Tomcat. SMTP Postfix, POP/IMAP Dovecot. FTP Vsftpd, Proftpd, Pure-ftpd-mysql. Dns Bind9, dnsmasq. File Server & printer Samba (dc-ac). Network administrator: isc-server-dhcp, openvpn, etc. Install and renew SSL certicate. All services on cloud; AWS, Azure, etc. Also website and E-mail migrations. ALL panels and web managers. Management all Linux distributions. Setup, security and optimization your server. __________________________ VERY IMPORTANT!!! “Hi I'm Matias, someone is trying to impersonate me, this account is the only one active and verified by freelancer! I DON'T USE ANY OTHER MEANS OF CONTACT, ONLY FREELANCER CHAT!” -----------------------------------------
7.8
7.8
96%
Jaipur, India
$20 USD per hour
With 15+ years of experience in Web Hosting, Cloud Infrastructure, Email Marketing Systems, DevOps & Linux Server Administration, I help businesses run high-performance, secure and scalable environments. I’ve worked with all major cloud platforms including AWS, Google Cloud, Digital Ocean, and have successfully delivered 850+ projects with excellent client satisfaction. 🌐 Core Services 🔸 Server & Cloud Management • Server Setup & Optimization (Linux, Ubuntu, CentOS, Alma Linux) • WHM/cPanel, Plesk, Webmin, CyberPanel • VPS / Dedicated / Cloud Server Management • Security Hardening & Firewall Setup (CSF, UFW) • HA-Proxy Load Balancing, Auto-Scaling • NGINX, Apache, PHP-FPM tuning • Backup, Disaster Recovery & Monitoring • SSL Installation, Fixing SSL/CURL Issues ________________________________________ 🔸 DevOps & Automation • Docker, Kubernetes, Ansible, Jenkins • CI/CD Pipelines • Cloud Infrastructure Automation • Git, GitHub Actions • Infrastructure Scaling & Optimization ________________________________________ 🔸 Video Streaming & Real-Time Platforms • BigBlueButton (BBB) Setup & Customization • Jitsi Meet • Red5, Wowza • Live Streaming Server setup (RTMP, HLS) ________________________________________ 🔸 Email Marketing Infrastructure • SMTP (Postfix, Send mail, PowerMTA) • DKIM, DMARC, SPF, rDNS Setup • MailWizz, Interspire, Acelle, Sendy, Mumara • Email Warmup, Inbox Optimization • SES, SendGrid, Mailgun Integration • Email Deliverability Fixes ________________________________________ 🔸 Windows & Office Services • Office 365 Setup & Administration • Windows Server Management • SSL Troubleshooting ________________________________________ 🔎 Digital Marketing Experience With 9+ years in Digital Marketing & SEO, I help clients increase online visibility using: • SEO (On-page, Technical, Off-page) • Google Ads Campaign Optimization • Website Audit & Traffic Growth Strategies Weekly and monthly performance reports are provided for full transparency.
9.0
9.0
95%
Lalsot, India
$10 USD per hour
Hello, We provide Web Design - Development and SEO services. We have been working here at Freelancer for the last 10 years and have more than 1300+ reviews from satisfied buyers. We can help you with any of the following: ☑️Web Development (PHP, Wordpress, html, Laravel, API, Magento, Woocommerce, Webflow, Shopify, CSS, Javascript, Drupal, Prestashop, MySQL, Opencart, CS-Cart) ☑️SEO (Backlinks, Promotion, Marketing) Our team is ready to give you best results. Hope you will give us a chance to work with you. Thank you, Dynamite Web Solution
7.9
7.9
97%
CHERTHALA, India
$50 USD per hour
I have 12 years of experience in Linux and Cloud server management which includes Monitoring, Security, and Optimization. Designed, configured, and managed public/private cloud infrastructures utilizing Amazon Web Services (AWS), including Elastic Cloud Compute (EC2), Virtual Private Cloud (VPC), Public and Private Subnets, Security Groups, Route Tables, Elastic Load Balancer, Cloud Watch and IAM. Implemented AWS high availability using AWS Elastic Load Balancing (ELB), which performed a balance across instances in multiple Availability Zones. AWS deployment using Ansible and Terraform, also deployed, and administered Open stack services. Configuring Ansible to manage AWS environments and automate the build process for core AMIs (Amazon Machine Image) used by all application deployments including Auto scaling and Cloud formation scripts. Worked with Docker on multiple cloud providers, from helping developers build and containerize their application (CI/CD) to deploying either on public or private cloud. Played a major role in building Docker images; create build and deployment configurations to deploy applications using Jenkins onto the Kubernetes cluster. Deployed and configured Elastic search ELK, Logstash and Kibana (ELK) for log analytics, full text search, application monitoring in integration with AWS Lambda and CloudWatch. Used Kubernetes to deploy scale, load balance, scale and manage Docker containers with multiple namespace versions. Troubleshooting the network issues involving TCP/IP, LAN/WAN networking, DNS, DHCP, SMTP, SNMP, netstat and monitored the servers and Linux scripts regularly and performed troubleshooting. Monitoring of the servers through Nagios, Icinga2, Zabbix I can handle cloud platform setup and Network management. I'm an expert in Website and e-mail Migration. I also have experience on VMware. Cloud Services: Amazon web services (AWS) , Gcloud , Digitalocean , Scaleway , Azure , Rackspace , Linode etc... My areas of expertise are: Linux, FreeBSD, Windows, Asterisk, FreePBX, NFS, CIFS, VMware, Xen, LVM, Apache, Nginx, Tomcat, Zimbra, Qmail, Sendmail, Postfix, Exim, LVM in Linux, Jabber, Openfire, FTP, Bind, PowerDNS, Pfsense, IPtables, Zabbix, Nagios, MysQL, LDAP, SquidFreeNAS, IPSEC, OpenVPN, PPTP, L2TP TECHNICAL SKILLS Operating systems: Linux, Windows Protocols: TCP/IP, FTP, DHCP, HTTP, SMTP, POP, IMAP Application/Web Servers: Apache, Nginx, Litespeed Mail Servers: Postfix, exim, sentmail, zimbra, iredmail
8.6
8.6
99%
Noida, Gautam Bhudha Nagar, India
$20 USD per hour
✓ 800+ Successful Projects & 5-Star Reviews I'm a Senior Web Developer with 15+ years of experience specializing in WordPress, WooCommerce, Shopify, Custom PHP, Website Speed Optimization, Security Hardening, and SEO-friendly development. I help businesses: • Build high-converting websites • Create WooCommerce stores • Improve Google PageSpeed scores • Fix WordPress issues quickly • Remove malware and secure websites • Develop custom PHP applications My focus is on delivering fast, secure, mobile-friendly websites that generate results for businesses. If you need a reliable developer who communicates clearly and delivers on time, let's discuss your project.
8.3
8.3
94%
Karachi, Pakistan
$25 USD per hour
We build AI-powered software systems, intelligent automation workflows, AI agents, MCP servers, and scalable SaaS platforms for startups, agencies, and enterprises. Our expertise includes AI agent architecture, workflow automation, OpenAI integrations, multi-agent systems, MCP server development, CRM automation, business process automation, and enterprise-grade web applications. We help businesses automate operations, reduce manual work, improve customer experience, and scale faster using modern AI technologies. 🚀 Core Expertise: ✔ AI Agents & Autonomous Systems ✔ MCP Server Development ✔ OpenAI, Claude & Gemini Integrations ✔ AI Chatbots & Assistants ✔ n8n & Workflow Automation ✔ AI CRM & Business Automation ✔ SaaS Platforms & Enterprise Applications ✔ Laravel, React, Node.js & APIs ✔ Multi-Tenant Architectures ✔ Cloud Infrastructure & DevOps 💡 We specialize in: • AI-powered CRM systems • AI customer support agents • Business workflow automation • AI lead qualification systems • AI dashboards & analytics • AI-enhanced marketplaces • AI-integrated ERP/CRM platforms • Voice AI & AI chat systems • Custom MCP server implementations Our focus is delivering scalable, secure, maintainable, and revenue-driven AI software solutions with long-term business value.
9.0
9.0
96%
Islamabad, Pakistan
$45 USD per hour
Skillful in Website and Web Application development with handful number of technologies including PHP, MYSQL, C#, ASP.NET, CSS/HTML, Wordpress. Proficient in statistical analysis using SPSS/STATA. Research analysis capabilities in Machine Learning through MATLAB, PYTHON, R and SPSS. 900+ jobs @FL with 4.9 rating.
8.7
8.7
95%
Panchkula, India
$15 USD per hour
⭐ Profile Rating: 4.9 Out of 5 📊 Percentage of jobs completed: 95% 🏆 Successfully delivered jobs: 600+ 12+ years of experience in the domain of information technology, having expertise in web design, development, and digital marketing (SEO, PPC, Social Media Marketing & Online Reputation Management). I worked for a number of organizations from new to well-established ones around the world. My goal is to understand business goals and develop a customized strategy that meets your specific needs regardless of size or industry. ........................................................................ Web Skills: PHP, HTML, HTML5, CSS, CSS3, JavaScript, jQuery, Ajax, React, Node.js, Angular.js, Adobe Photoshop WordPress, WooCommerce, Shopify, Code Igniter, Laravel, Magento, Joomla, BigCommerce, Wix, Yii, Zend Framework, API Development, Payment Gateway Integration, E-Commerce Website Development, WordPress Plugin Development Digital Marketing Skills: - SEO (Search Engine Optimization Both On-Page and Off-Page) - Social Media Optimization and Marketing - Lead Generation Campaign - Amazon, Walmart, eBay, Mobile App Store SEO and Optimization - Pay Per Click/Paid Marketing (Google, Facebook, Amazon, Walmart, eBay) - Set up conversion tracking for Google Ads - Set up and Install the Meta pixel - Set up Google Analytics 4 - Set up Google search console - Looker Studio custom reports - YouTube Video Optimization and Marketing - Market research and business plan - Link Building - Google Ads Campaigns Setup, Optimization, and Management (PPC Advertising) - Google Shopping/Merchant Setup, Optimization and Marketing - Online Reputation Management - Conversion Rate Optimization (CRO) - Data Analytics - Local Citation/Business Listings - Amazon Listing Optimization & PPC Ads Campaign: Product Title, Bullet Points, Products Descriptions | A+ Content/EBC Design | PPC Campaigns | Custom Infographics, Lifestyle images, Product Images & Videos. I’m backed with a team of 50+ dedicated certified experts.
8.2
8.2
98%
Hai Duong, Vietnam
$20 USD per hour
Hi all, I'm an expert with all cms, ecommerce opensource php. I can code plugins, modules, components, create templates etc. I'm experienced and can do it for you fast and complete. Kind regards.
An SMTP expert is an email infrastructure specialist who configures, secures, and optimizes Simple Mail Transfer Protocol servers to ensure reliable, high-deliverability email sending for businesses. SMTP experts handle everything from initial server setup and DNS authentication to deliverability troubleshooting, IP warming, and integration with transactional and marketing email systems. Whether you send password resets, order confirmations, newsletters, or cold outreach, hiring a skilled SMTP consultant is the difference between landing in the inbox and disappearing into spam folders.
SMTP work sits at the intersection of system administration, networking, and email deliverability. A freelance SMTP specialist takes ownership of the technical pipeline that moves messages from your application to the recipient's mail server, then proves that the mail you send is authenticated, reputable, and welcomed by major mailbox providers like Gmail, Outlook, Yahoo, and Apple Mail.
The commercial impact is direct. Poor SMTP configuration causes failed signups, broken password recovery, lost transactional revenue, and blocked marketing campaigns. A qualified SMTP consultant protects sender reputation, reduces bounce rates, and keeps critical email flowing.
SMTP freelancers handle a broad range of email infrastructure tasks. Typical engagements include:
A capable SMTP expert is fluent across mail transfer agents, cloud email services, and monitoring tools. Common platforms include Postfix, Exim, Sendmail, and Haraka for self-hosted MTAs; Amazon SES, SendGrid, Mailgun, Postmark, SparkPost, Brevo, and Elastic Email for managed sending; and PowerMTA for high-volume dedicated infrastructure. For diagnostics and reputation monitoring, SMTP consultants rely on tools like MXToolbox, Mail-Tester, Google Postmaster Tools, GlockApps, Sender Score, and DMARC analyzers such as Postmark DMARC and Valimail.
On the integration side, expect proficiency with PHPMailer, SwiftMailer, Symfony Mailer, Nodemailer, SMTP libraries in Python and Ruby, and SMTP plugins for WordPress, Magento, and Shopify. Linux administration, DNS management on Cloudflare or Route 53, and basic firewall and SSL certificate handling are part of the standard skill set.
SMTP freelancers work with SaaS companies sending transactional notifications, e-commerce platforms confirming orders and shipments, fintech firms delivering statements and security alerts, healthcare providers sending appointment reminders, and marketing agencies running large outbound campaigns. They also support cold email outreach operations, newsletter publishers, and developers building email-heavy applications who need their sending infrastructure built or rescued.
Strong SMTP experts demonstrate hands-on experience with both self-hosted MTAs and managed services. Look for portfolio evidence of deliverability turnarounds, blacklist remediation, and DMARC enforcement projects. Profiles should reference specific platforms, sending volumes handled, and authentication standards rather than vague email marketing claims. Linux system administration experience and a working knowledge of DNS internals are non-negotiable.
Useful interview questions to copy and use:
Freelancer.com gives you access to a global pool of email infrastructure specialists with verified profiles, public ratings, and portfolios you can review before committing. Whether you need a one-time deliverability audit or an ongoing SMTP administrator, you can post a project on Freelancer.com and receive competitive bids from freelancers across every time zone within hours. Buyers set their own budgets, compare proposals side by side, and use Milestone Payments to release funds only when work is verified. The scale and breadth of freelancers on Freelancer.com means you can match with specialists who have hands-on experience with your exact stack, from Postfix on bare metal to Amazon SES at enterprise volume.
Hiring the right SMTP specialist comes down to writing a precise brief, reading proposals carefully, and verifying the freelancer's track record on similar email infrastructure work. The process below outlines what to do at each stage so you end up with a consultant who can authenticate, configure, and protect your sending reputation.
The quality of bids you receive is determined almost entirely by how clearly you describe your email setup. SMTP work is technical, so a vague brief attracts generalists while a specific brief filters for true specialists. Head to the
Bids are mini-proposals, not just price tags. Strong SMTP candidates will outline the diagnostic steps they plan to take, ask informed questions about your DNS and sending stack, and reference specific authentication standards or tools. Read each proposal carefully and shortlist freelancers whose interpretation of the brief shows genuine technical understanding.
Final selection should combine proposal quality with verifiable evidence on the freelancer's profile. SMTP work has long-term consequences for your sender reputation, so prioritize consistency over a single impressive review. Look for repeat clients in deliverability and email infrastructure work.
An SMTP expert handles the technical sending infrastructure: server configuration, authentication records, deliverability, and integration with applications. An email marketer focuses on campaign content, segmentation, and conversion optimization. Many deliverability problems require an SMTP specialist, not a marketer.
Yes. One-off engagements are common, including blacklist removal, SPF and DKIM setup, DMARC implementation, or migrating from one sending platform to another. Scope the work clearly in your brief and most freelancers will quote a fixed-price proposal.
Most businesses are better served by managed services like Amazon SES, SendGrid, or Postmark because they handle infrastructure and reputation at scale. Self-hosted Postfix or PowerMTA setups make sense for very high volumes, strict data residency requirements, or specialized cold outreach. An SMTP consultant can advise based on your sending profile.
A standard configuration with authentication, application integration, and basic deliverability testing typically takes a few days. IP warming and reputation building extend over several weeks. Complex migrations or multi-domain DMARC rollouts can run longer depending on the number of sending sources involved.
Share your sending volume, current platform, domain DNS access, application stack, and a description of any deliverability issues you are experiencing. Access to logs, current SPF and DKIM records, and any DMARC reports you have collected speeds up diagnosis significantly.
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