Dedicated IPs Are Not Just for Big Senders
Why Should a Dedicated IP Be Reserved for High-Volume Email Senders? No, you’re not nuts — your own dedicated IP really is included from just 5,000 emails per month.For years, dedicated IP addresses have largely been associated with high-volume email sending. If you wanted your own sending IP, you typically needed significant email volume, a […]
Microsoft Tightens Exchange Online Outbound Email Limits – What Businesses Need to Know
Microsoft Tightens Exchange Online Outbound Email Limits – What Businesses Need to Know Updated September 2026 Microsoft has started rolling out stricter outbound email limits for new Exchange Online tenants. From September 14, 2026, Microsoft is changing how the Tenant External Recipient Rate Limit (TERRL) is calculated for certain tenants. The change is particularly important […]
What Is SMTP and How Does It Work?
mySMTP · Email Infrastructure Explained SMTP (Simple Mail Transfer Protocol) is the standard protocol used to send email across the internet. It transfers email from an application or email client to an SMTP server and between mail servers until the message reaches the recipient’s email provider. What Is SMTP and How Does It Work? | […]
Why Your Printer Won’t Connect to SMTP (and how to fix it)
Why Your Printer Won’t Connect to SMTP — mySMTP Every network-connected multifunction printer (MFP) — HP, Canon, Xerox, Brother, Ricoh, Konica Minolta, Epson, Kyocera — ships with a minimal embedded SMTP client baked into its firmware, used for scan-to-email, fax-to-email, and job/status notifications. Unlike a real mail server, that client is rarely updated after the […]
5 Reasons to Choose mySMTP for Business-Critical Email
5 Reasons to Choose mySMTP for Business-Critical Email Sending email is easy. Getting important email reliably delivered is harder. Whether you’re sending password resets, invoices, order confirmations, notifications or marketing email, your SMTP infrastructure directly affects your sender reputation and deliverability. Here are five reasons businesses choose mySMTP. Dedicated Infrastructure 1 Your Email. Your IP. […]
What Happens During the First 10 Seconds After You Send an Email?
What Happens During the First 10 Seconds After You Send an Email? Email Infrastructure — Deep Dive 2026 · mySMTP Team · Email Delivery SMTP Authentication Deliverability Follow a single email on its journey from your application to your recipient’s inbox. Most people think sending an email is instantaneous. You click Send, and seconds later […]
Running MailWizz on mySMTP: Getting Warmup and Quota Right
Running MailWizz on mySMTP: Warmup and Quota Tools for Better Deliverability If you self-host MailWizz in Europe, the United States, or anywhere else, mySMTP can sit behind it as your dedicated SMTP relay, handling secure email delivery to Gmail, Outlook, Yahoo, Apple Mail, and other major mailbox providers while MailWizz manages your campaigns, subscribers, and […]
Introducing the mySMTP Deliverability Toolbox
Introducing the mySMTP Deliverability Toolbox — Blog Post We’re launching toolbox.smtp.ai, the mySMTP Deliverability Toolkit — a free, unified suite of tools built for email senders, deliverability engineers, and technical marketers who need fast, reliable answers without the tab-switching. Every tool runs entirely in the browser. Nothing is transmitted to our servers — your email […]
The mySMTP DKIM Checker — Explained
A plain-language guide to what happens behind the scenes every time you look up a DKIM record.
What is the Best SMTP Port to Use for Sending Emails? Ports 25, 465, 587 and 2525 Explained
Most senders pick a port without understanding why it matters. The wrong choice can get your messages silently dropped, rejected by ISPs, or sent without encryption.