Recommended global mailbox detection tools: How to filter out reachable email addresses?

Do global email marketing,When SaaS registration is reached, B2B cold start or batch activation, most teams will prepare a batch of email addresses for delivery. But a key point that has been repeatedly stepped on is:How many of the people on the list can actually receive emails?"reachable mailbox"?

Judging by format alone is not enough. Although a large number of addresses appear to be normal, they may have been logged out, blocked, rejected, have a high bounce rate, or may not even be the active email addresses used by the users themselves.

At this time, a set of stable and reliableGlobal mailbox detection toolbecomes particularly important.

1. Why is it necessary to use the global mailbox detection tool?

1. Identify invalid email addresses in advance to avoid large-scale bounces

If the mass sending system frequently bounces messages within a short period of time, it will be deemed as spam by major email service providers, and the sender's domain name is likely to be included in the blacklist. Detection tools can accurately eliminate these"Sources of credit risk".

2. Ensure delivery quality and improve open rate and click-through rate

High quality email= Higher open and conversion rates. Through global email detection, you can filter out real, available email addresses with active behavior, and optimize the top data of the entire marketing funnel.

3. Save mass sending costs and system resources

Email services are usually billed based on the volume sent. The more invalid mailboxes there are, the greater the waste. Detection tools can significantly reduce list size, making every email more valuable.

2. What capabilities should a global mailbox detection tool have?

Faced with the wide variety of testing tools on the market, what can truly supportGlobal email verificationA platform suitable for marketing purposes usually needs to meet the following points:

1. Batch import and export support

supportCSV, TXT, Excel and other formats can detect tens of thousands of email addresses at one time and output structured results for system docking or personnel distribution.

2. Multi-language domain names and email suffixes are compatible

Must be compatible with common suffixes (such as .com,.net,.org) and local email suffixes in each country (such as .fr,.de,.co.jp,.com.mx), covering global user scenarios.

3. Support SMTP layer authentication

By simulating the real mail delivery process, it detects whether the target mailbox exists, whether it is received, whether the connection is refused, etc.

4. Ability to identify rejection rules

For mailboxes that reject unfamiliar emails, have full mailbox space, or use graylist policies, we can provideMarked as "suspicious" rather than simply classified as valid.

5. Risk rating and labeling mechanism

Can provide email address based on test results"Recommendation level" or "risk level" labeling allows users to quickly prioritize usage.

3. Result classification and application suggestions after mailbox detection

Good mailbox detection tools will typically label each mailbox into one of the following categories:

lValid / available: real existence, can receive emails, no obvious risks

lInvalid / invalid: The address does not exist and the server returns550 Error etc.

lCatch-All / Suspicious reception: The server accepts all mail, but delivery is not guaranteed

lUnknown / Uncertain: Server unresponsive or ambiguous return code

lBlocked/rejected: The server explicitly refuses to accept external mail

For mailboxes with different statuses, it is recommended to:

lValid email: Enter the main email marketing pool and give priority to delivery

lSuspicious email: Establish a grayscale test group and use it after secondary verification

lReject mailboxes: eliminate them uniformly to avoid affecting system reputation

lInvalid email addresses: delete them directly to prevent them from dragging down the overall delivery performance.

4. Recommended platform: Digital Planet Mailbox Detection System

In cross-border marketing and global sales scenarios,Digital Planet Platform Provides a detection system specifically designed for large-volume mailbox screening, covering global address structure,SMTP logic and risk identification.

Core competencies include:

lImport email data with one click, support100,000+ address detection

lSupport global email suffix recognition and cross-language structure judgment

lAutomate format analysis+ SMTP detection + risk annotation

lOutput structured report: mailbox status/Recommendation Level/Rejection Reason

lCan be dockedWhatsApp/Telegram/Facebook and other platform data for cross-channel user identification

Applicable scenarios:

lData cleaning before cross-border e-commerce platform activation emails

lAddress preparation before connecting to marketing automation system

lEffectiveness of screening after B2B sales team obtains lead email

lEmail status verification for overseas registered users

lPre-screening before email promotion activities and optimizing conversion funnel

Feedback from a large number of companies shows that after using Digital Planet’s mailbox detection tool, the bounce rate of bulk emails has dropped on average.More than 70%, the proportion of valid addresses increased by nearly 40%.

Choosing the right tool can make every mass sending more accurate and every email more meaningful. In today's increasingly fierce global competition, a reliable email detection system is often the first step to win users' attention. If you already have an email list to be sent in bulk, you can submit batch testing through the Digital Planet platform to obtain detailed results and quickly apply them to business scenarios.

digital planet is a world-leading number screening platform that combines Global mobile phone number segment selection, number generation, deduplication, comparison and other functions . It supports customers worldwideBatch numbers for 236 countriesScreening and testing services , currently supports40+ social and apps like:

whatsapp/line, twitter, facebook, Instagram, LinkedIn, Viber, zalo, binance, signal, skype, DISCORD, Amazon, Microsoft, Truemoney, Snapchat, kakao, Wish, GoogleVoice, Botim, MoMo, TikTok, GCash, Fantuan, Airbnb, Cash, VKontakte, Band, Mint, Paytm, VNPay, Moj, DHL, Okx, MasterCard, ICICBank, Byb Wait.

The platform has several features including Open filtering, active filtering, interactive filtering, gender filtering, avatar filtering, age filtering, online filtering, precise filtering, duration filtering, power-on filtering, empty number filtering, mobile phone device filtering wait.

Platform provides Self-screening mode, generation screening mode, fine screening mode and customized mode , to meet the needs of different users.

Its advantage lies in integrating major social networking and applications around the world, providing one-stop, real-time and efficient number screening services to help you achieve global digital development.

You can find it on the official channelt.me/xingqiupro Get more information and verify the identity of business personnel through the official website. official businesstelegram:@xq966

(Kind tips:existWhen searching for Telegram’s official customer service number, be sure to look for the usernamexq966), you can also verify it through the official website personnel: https://www.xingqiu.pro/check.html , confirm whether the business contacting you is a planet official