Email Server: Definition, Types, and Deliverability Guide
Learn what an email server is, how SMTP, DNS, authentication, and reputation affect delivery, and how to keep campaign and transactional mail moving.
Sep 14, 202625 min read
Smtp
160 articles on smtp.
Email Routing Explained: How Messages Find the Right Destination
Learn how email routing works through MX records, SMTP relays, and inbox rules—and how to design reliable routes without harming deliverability.
Sep 14, 202622 min read
Email Logs: Definition, Events, and Deliverability Troubleshooting
Learn what email logs are, which events and SMTP responses they capture, and how to use email logs to diagnose delivery and campaign issues.
Sep 13, 202623 min read
Email Integrations: Definition, Types, and Deliverability Impact
Learn what email integrations are, how SMTP, APIs, webhooks, and DNS work together, and how a reliable setup improves email deliverability.
Sep 12, 202621 min read
Email Header Explained: Fields, Authentication, and Deliverability
Learn what an email header is, which fields affect authentication and deliverability, and how to inspect, diagnose, and fix header issues.
Sep 12, 202626 min read
Email Gateway: Definition, How It Works, and Deliverability Impact
Learn what an email gateway is, how it routes and filters mail, why it affects deliverability, and how senders troubleshoot gateway errors.
Sep 12, 202625 min read
Email Verification Accuracy: Why “Valid” Can Still Bounce
Email verification accuracy is more nuanced than a valid/invalid label. Learn why SMTP probes, catch-alls, and guesses can still bounce.
Sep 12, 202618 min read
Email Encryption: What It Means for Secure Email Delivery
Learn what email encryption means, how TLS, MTA-STS, DANE, and end-to-end encryption protect email delivery and affect campaign operations.
Sep 11, 202623 min read
Email Bounce: Definition, Types, Causes, and How to Reduce Them
Learn what an email bounce is, how hard and soft bounces affect deliverability, how to calculate bounce rate, and how to reduce failed sends.
Sep 10, 202625 min read
E-mail transacional: o que é, exemplos e como melhorar a entrega
Entenda o que é e-mail transacional, como ele afeta a entregabilidade e quais práticas melhoram a entrega de mensagens críticas.
Sep 9, 202624 min read
Deliverabilty: What Email Deliverability Means and How to Improve It
Learn what email deliverability means, how it differs from delivery, which metrics matter, and practical ways to improve inbox placement.
Sep 7, 202622 min read
Cold Email: Definition, Deliverability Risks, and Best Practices
Learn what cold email is, why it can hurt deliverability, how to measure campaign quality, and how to send relevant outreach responsibly.
Sep 4, 202623 min read
Client di posta: cos’è e perché influenza le tue email
Client di posta: scopri cos’è, come influenza rendering, aperture e deliverability e come progettare email affidabili per ogni destinatario.
Sep 4, 202622 min read
Bulk Email Software: Definition, Deliverability, and Best Practices
Learn what bulk email software is, how it supports high-volume campaigns, and the deliverability practices that protect inbox placement.
Sep 2, 202621 min read
Blocklist 2: What an Email Blocklist Means for Deliverability
Learn what an email blocklist is, why it hurts deliverability, how to diagnose a listing, and the steps to fix it and prevent repeat issues.
Sep 2, 202622 min read
What Does B2B 2 Mean in Email Sending?
Learn what B2B 2 means in email sending, why B2B email deliverability differs, and how to improve authentication, targeting, and engagement.
Sep 1, 202620 min read
Autorepondeur email : définition, usage et délivrabilité
Découvrez ce qu’est un autorepondeur email, son effet sur la délivrabilité, les boucles à éviter et les bonnes pratiques de configuration.
Sep 1, 202627 min read
Automazione 2: definizione, deliverability e best practice email
Scopri cos’è Automazione 2 nelle email, perché non è una metrica universale e come progettare workflow che migliorano engagement e deliverability.
Sep 1, 202622 min read
Automatización 3: qué significa en email y entregabilidad
Automatización 3 no es una métrica estándar. Aprende qué suele indicar en email, cómo medir un flujo y proteger la entregabilidad.
Aug 31, 202621 min read
Acceptance Rate in Email: Definition, Formula, and Fixes
Learn what acceptance rate in email means, how to calculate it, why it affects deliverability, and practical ways to improve rejected sends.
Aug 30, 202622 min read
Transactional Email: Definition, Examples, and Deliverability Basics
Learn what transactional email is, how it differs from marketing email, why it affects deliverability, and how to send reliable messages.
Aug 29, 202622 min read
Strapi
Install strapi-provider-email-volanea to send Strapi's transactional email through the Volanea API. Setup, configuration, attachments, error codes and troubleshooting.
Aug 28, 20265 min read
Supabase
Replace Supabase's rate-limited default sender. Auth emails via the Send Email Hook, transactional email from Edge Functions, database-webhook triggers, and delivery events written back to Postgres.
Aug 27, 202612 min read
IP Address in Email Deliverability: Definition, Reputation, and Setup
Learn how an IP address affects email deliverability, sender reputation, reverse DNS, shared vs. dedicated IPs, warming, and troubleshooting.
Aug 27, 202623 min read
Email Service Provider: Definition, Deliverability, and How to Choose One
Learn what an email service provider is, how it sends email, affects deliverability, and what to evaluate before choosing an ESP for your business.
Aug 27, 202619 min read
Email Deliverability: What It Is, How to Measure It, and How to Improve It
Learn what email deliverability means, how inbox placement differs from delivery, which metrics matter, and practical steps to improve results.
Aug 27, 202624 min read
Email API: What It Means for Sending, Deliverability, and Campaigns
Learn what an email API is, how it sends transactional and campaign email, and how API design affects deliverability, tracking, and reliability.
Aug 25, 202623 min read
Soft Bounce: What It Means and How to Reduce It
Learn what a soft bounce is, why temporary delivery failures affect email deliverability, how to calculate the rate, and how to reduce it.
Aug 25, 202623 min read
Hard Bounce: What It Means and How to Reduce It
Learn what a hard bounce means in email, how to calculate hard bounce rate, why permanent failures hurt deliverability, and how to prevent them.
Aug 25, 202624 min read
Bounce Rate in Email: How to Calculate, Diagnose, and Reduce It
Learn what bounce rate in email means, how to calculate it, why it affects deliverability, and practical steps to reduce hard and soft bounces.
Aug 24, 202627 min read
Symfony Email API for Transactional Email That Delivers
Use Volanea as your Symfony email API for reliable transactional delivery, SMTP compatibility, REST sending, domain setup, and actionable events.
Aug 20, 202621 min read
Send Email From .NET Without SMTP Friction
Send email from .NET with Volanea’s REST API, SMTP relay, domain authentication, event webhooks, and deliverability tools for production.
Aug 19, 202624 min read
Laravel Email API That Fits the Way You Build
Send reliable transactional email from Laravel with Volanea. Use familiar SMTP or REST, protect secrets, queue work, and improve delivery.
Aug 19, 202624 min read
Node.js Email API for Transactional and Campaign Email
Use Volanea’s Node.js email API and SMTP relay to send reliable transactional and campaign email across servers, serverless functions, and edge runtimes.
Aug 18, 202622 min read
WordPress
Install the Volanea SMTP plugin to send WordPress email through the Volanea API. Setup, configuration, troubleshooting, and what's different from a normal SMTP plugin.
Aug 18, 20264 min read
Troubleshooting Email Delivery Issues: A Developer’s Guide
Troubleshooting email delivery issues? Diagnose API, SMTP, DNS, authentication, bounces, spam placement, and recipient-side failures systematically.
Aug 17, 202623 min read
What Are Inbound Email Error Messages? Causes, Codes, and Fixes
Learn what inbound email error messages mean, where they occur, how SMTP, DNS, and webhook failures differ, and how to diagnose and fix them.
Aug 17, 202624 min read
How to Send Email From Subdomains: DNS Setup and Deliverability
Learn how to send email from subdomains with SPF, DKIM, DMARC, return-path, and tracking DNS records, plus practical testing and troubleshooting.
Aug 17, 202623 min read
Subject Line and From Address Character Limits: A Developer Guide
Learn subject line and From address character limits, SMTP line rules, Unicode encoding, DNS constraints, and validation practices for reliable email delivery.
Aug 16, 202620 min read
Email Preheader Text: How to Add Preview Copy That Works
Learn how to add email preheader text with robust HTML, plain-text, testing, accessibility, and deliverability practices for transactional messages.
Aug 16, 202621 min read
Managing Your Own Unsubscribe Process: A Developer Guide
Learn how to manage your own unsubscribe process with signed links, suppression data, one-click headers, testing, and compliance safeguards.
Aug 16, 202620 min read
How to Add an Unsubscribe Link to Email (Code + Headers)
Learn how to add an unsubscribe link to email with a compliant footer, List-Unsubscribe headers, one-click POST endpoint, testing steps, and safeguards.
Aug 16, 202623 min read
Resolving SPF Too Many DNS Lookups Errors: A Practical Guide
Resolve SPF too many DNS lookups errors with a clear audit, safe record changes, flattening guidance, testing steps, and delivery advice.
Aug 15, 202620 min read
DKIM Record Won’t Verify? A Practical DNS Troubleshooting Guide
Fix a DKIM record that won’t verify: check the selector, DNS host and value, CNAME/TXT conflicts, propagation, signing, and DMARC alignment.
Aug 15, 202620 min read
Setting Up DKIM for Your Domain: DNS Records, Testing, and Troubleshooting
Set up DKIM for your domain with correct DNS records, selector guidance, testing commands, key rotation, and fixes for common failures.
Aug 15, 202620 min read
What Are Transactional Emails? Definition, Examples, and Delivery
What are transactional emails? Learn how automated, event-triggered messages work, differ from marketing email, and deliver reliably.
Aug 15, 202620 min read
Transactional vs Broadcast Email: Differences That Matter
Transactional vs broadcast email explained: learn when to use each, how consent, deliverability, DNS, retries, and unsubscribe rules differ.
Aug 15, 202623 min read
Using Mail-Tester.com to Troubleshoot Deliverability Issues
Use a Mail-Tester.com deliverability test to diagnose SPF, DKIM, DMARC, DNS, content, and SMTP issues before email reaches customers.
Aug 15, 202624 min read