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How to Measure Email Segmentation?
Creating segments is easy; knowing whether they actually work takes a few specific metrics. This guide shows you which numbers...
Read moreHow Can I Edit the Fields Email and Phone?
The email and phone fields are special: they are the two unique identifiers that connect a contact to your campaigns...
Read moreHow Can I Edit a Contact Field?
A contact field stores a piece of information about a contact — first name, city, language, last purchase date, anything...
Read moreHow to Create a New Contact in Mailpro
Adding a new contact to Mailpro takes about 30 seconds — whether you have one address or one thousand. This...
Read moreHow Can I Create and Assign a Tag to a Contact?
A tag is a free-form label you attach to a contact — like «VIP», «cold-lead», «webinar-2026», «requested-demo». Unlike custom fields...
Read moreHow to Create a Segment?
A segment is a saved subset of your contact list, defined by rules you choose: language, last open date, city,...
Read moreWhy the Countdown Timer Doesn’t Load on Outlook Desktop Version?
If your countdown timer renders perfectly in Gmail, Yahoo, Apple Mail and on mobile, but appears as a frozen single...
Read moreWhat Is the Countdown Timer and Why Does It Stop After 40 Seconds?
The countdown timer is an animated visual that shows the time remaining until a deadline (a sale ending, a webinar...
Read moreWhat Is the Difference Between Single Opt-in and Double Opt-in Subscription?
The difference between single opt-in and double opt-in comes down to one extra click: the confirmation. With single opt-in, the...
Read moreHow Does the Automatic Credit Recharge System for Emails Work?
Automatic recharge (auto top-up) keeps your account funded so high-volume sending never stops for lack of credits. It is mainly...
Read moreHow Does the Mailpro Reward Program Work?
The Mailpro reward program turns your loyalty and word-of-mouth into free email credits. Every time you renew on time, recommend...
Read moreHow Does Automatic Subscription Renewal Work?
Mailpro subscriptions automatically renew on the cycle you chose at signup — monthly, quarterly, or annual — provided your account...
Read moreHow Do I Send Emails with an SMTP Server?
Sending email through Mailpro’s SMTP server takes about ten minutes from start to first message. The exact steps depend on...
Read moreHow to Change the Default Language of an Automatic Link?
When Mailpro automatically inserts a link in your email — the unsubscribe link, the “view in browser” link, the “forward...
Read moreHow to Manage Unsubscribe Link for SMTP Messages?
Even when you send through SMTP from your CRM or your own application, every commercial message in 2026 must include...
Read moreHow Are Statistics Collected from an SMTP Sending?
An SMTP send is fast and silent: your application hands the message off, the relay delivers it, and unless something...
Read moreWhere Do I Find the SMTP Authentication Credentials in Mailpro?
To send messages through Mailpro’s SMTP relay you need four pieces of information: server host, port, username and password. They...
Read moreWhat Type of SMTP Server to Choose?
Choosing the right SMTP server is one of the most consequential technical decisions for any business that sends email at...
Read moreWhat Is the Maximum Weight of a Message Sent Through SMTP?
Mailpro’s SMTP relay accepts messages up to 20 MB total, including the email body, headers and all attachments after Base64 encoding...
Read moreWhat’s the difference between SMTP and API?
Both SMTP and a transactional Email API send messages from your application to your customers, but they take different paths...
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