smtp proxy ip settings: mail client SMTP sending configuration proxy IP

Can't get mail delivery failure? Try this SMTP proxy IP configuration

Recently, a number of friends complained to me that using email clients to send mass notifications are always intercepted by the platform, or the sending speed is as slow as a snail. Here to teach you a wild way--Hook up SMTP to a proxy IPThis method is especially suitable for teams that need to send bulk mail and are not comfortable with building their own servers. This method is particularly suitable for the need to send bulk mail and not convenient to build their own server team, we use ipipgo's residential agent to practice demonstration.

Why do I have to use a proxy IP to send email?

Now the mail service providers are very fine, the same IP high-frequency mail directly to your blacklist. Last year, a friend doing e-commerce, using enterprise mailboxes to send 500 promotional emails a day, the results of the third week of the entire domain name are marked as spam. Later, he switched to a dynamic residential proxy.Automatic IP switching for every 20 emails, the survival rate pulls right above 90%.

Handy Configuration Guide

Here's an example of ipipgo's Socks5 proxy, their client supportsAutomatic switching of export IPsIt is much easier than extracting with API. First, download the client from the official website, log in and select "Residential Agent" - "Create Tunnel":

Tunnel type: Socks5
Geographic location: the country where the target customer is located
IP switching policy: by time interval (30 minutes recommended)

Outlook Setup Example

Open Account Settings - Server Settings in theOutgoing mail server (SMTP)Get your hands dirty here:

Server address: 127.0.0.1 (local proxy port)
Port: 1080
Check "Authentication required" and fill in the email account

Python scripting program

Remember to hang a proxy when using smtplib to send a message, this code template take it and change it to work:

import smtplib
import socks

socks.set_default_proxy(socks.SOCKS5, "proxy.ipipgo.com", 30001)
socks.wrapmodule(smtplib)

server = smtplib.SMTP('smtp.xxx.com', 587)
server.starttls()
server.login("your@email.com", "password")
 Normal sending logic...

Pitfall Warning.

Three common mistakes newbies make:
1. Clients not closedLocal DNS resolutionThis causes IP masquerading to be ineffective
2. Messages sent using data center agents, identified as machine traffic
3. Sending more than 50 consecutive letters from the same IP will trigger the wind control mechanism.

QA First Aid Station

Q: Proxy IP shows successful connection but can't send emails?
A: Check if the port is blocked by the firewall, ipipgo's Socks5 proxy needs to use port 1080 or 30001

Q: What should I do if the sending speed suddenly slows down?
A: In the client putIP switching modeChange it to "Failover", don't wait until the IP is completely blocked.

Q: What should I do if I need a fixed sending IP?
A: directly on the ipipgo static residential proxy, 35 dollars a month that package, can bind the fixed export IP

Why ipipgo?

Their agent pool has a specialty--Real Residential IP RotationThe first is that it is not a good idea to use the US node to send emails. The actual test with their U.S. nodes to send mail, open rate is higher than the ordinary agent about 20%. Especially friends doing cross-border e-commerce, with TK line agent to send international mail, basically will not enter the trash box. The price of the package is also real, dynamic agent more than 7 yuan 1 G, enough to send a small 10,000 plain text mail.

Lastly, a reminder: Proxy IPs are not a panacea.Reasonable frequency of transmissionrespond in singingQuality Email ContentIf you're spamming, you're not going to be able to save yourself. If the mass spamming, what fairy agent can not save. If you can't figure out how to set it up, go directly to ipipgo's website and look for the technical customer service, and the response speed is much faster than that of your peers.