Mailjet blog
Deliverability
Everything you need to start building connections that matter.
![Hermes wearing a mask sits on a sofa and spies emails](https://images.ctfassets.net/y6oq7udscnj8/42PthnrXyGi2n1jlJZ3FQp/bae5efbf3737a054d2fffe90e1f90b0b/Email_Deliverability_4_-_Version_3.png?w=2048&h=960&q=50&fm=png)
Deliverability
6 min
Email spoofing: How brand impersonation really works
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![Hermes and one other Goddess are connecting from the living room](https://images.ctfassets.net/y6oq7udscnj8/4V7kmxZTuO5spRWiXsRSEh/98727adbdbd241868b5d74977b52ff6e/Email_Design_1_-_Version_9.png?w=2048&h=960&q=50&fm=png)
Deliverability
6 min
Email list cleaning: Complete your chores before playtime
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![Hermes thinking about spam](https://images.ctfassets.net/y6oq7udscnj8/ZZbCu2DCSpr9kzh27Gdmc/cb1aae894fac93ea5e7250f874680399/Email_Deliverability_4_-_Version_10.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
8 min
8 ways to avoid ISP Blocklist
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![Hermes and a Goddess deliver mail in front of a green and orange house](https://images.ctfassets.net/y6oq7udscnj8/3VqoTKYE4EVcmhGauaR4HI/dd135e6deea2af2e545794c78c49f641/Deliverability_1_-_Version_8.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
8 min
How to handle SPF and the 4 steps to create an SPF record
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![Smirky god on moped with green and red background](https://images.ctfassets.net/y6oq7udscnj8/LlDprixdjiHFhDJHUQw0t/65823622fe16c4bd46548d73032c9ded/Deliverability_6_-_Version_7.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
7 min
Email throttling: An optimization guide
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![Gods putting mail in blue mailbox](https://images.ctfassets.net/y6oq7udscnj8/6buyU0egzaQfBE1yQ3NZ4D/c2252f6a3fd2157dca087f02d8b8c5e9/Deliverability_1_-_Version_6.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
7 min
What is IP reputation and are there ways to improve it?
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![Hermes and a Goddess split email in front of colourful cabins](https://images.ctfassets.net/y6oq7udscnj8/4yDkuWB4cGPonLdTfvwvv0/d751e99944619128a6850ade9d0ea3c7/Deliverability_1_-_Version_7.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
12 min
IP address explained & basics you should know
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![Deliverability_1_-_Version_4](https://images.ctfassets.net/y6oq7udscnj8/4YdVfcb0L2f9V2nhBOgF4W/5e6bcd37765bbadfcc13f35552250132/Deliverability_1_-_Version_4.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
7 min
Sunset policies in your email program
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![Hermes is floating with a picture in front of a screen](https://images.ctfassets.net/y6oq7udscnj8/4yBBKJD49MLe2n2DBP7VuW/0fe5407e56da6c27b4607e70d62cfc1f/Deliverability_2_-_Version_1.png?w=2048&h=960&q=50&fm=png)
Deliverability
7 min
Improving your sender reputation to boost email deliverability
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![Hermes and a Goddess deliver mail to two old postboxes](https://images.ctfassets.net/y6oq7udscnj8/4E13DxJxksr4CUN03e76eU/3560330018c26a7e958bcbc7fd622b4a/Deliverability_1_-_Version_9.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
7 min
What’s cool about COIL
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![Hermes filling up a mailbox](https://images.ctfassets.net/y6oq7udscnj8/3moHQjTx36FpuUeTCnroZI/42caef6e0d4b69965267186915d80eaf/Deliverability_1_-_Version_1.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
15 min
Sender score and email reputation: What are they and how to improve them
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![Hermes wearing a mask sits on a sofa and spies emails](https://images.ctfassets.net/y6oq7udscnj8/42PthnrXyGi2n1jlJZ3FQp/bae5efbf3737a054d2fffe90e1f90b0b/Email_Deliverability_4_-_Version_3.png?w=2048&h=960&q=50&fm=png)
Deliverability
8 min
Spam traps: What are they and how to avoid them
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![Hermes looks at a screen with a bin full of emails](https://images.ctfassets.net/y6oq7udscnj8/2560VbhpqkcyXCMQAWiEjw/02aea7f267951924ddbd8a06b653bb05/Deliverability_3_-_Version_4.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
10 min
Email list cleaning: Why and how to properly clean your email list
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![Hermes on the motorcycle delivering mail](https://images.ctfassets.net/y6oq7udscnj8/26dpqUPXPLhBR7gzuO7L1/91b5084cefc4a48e565a3ac2c041e740/Deliverability_6_-_Version_2.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
8 min
Email deliverability: A how-to guide to get into the inbox
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![Gods putting mail in blue mailbox](https://images.ctfassets.net/y6oq7udscnj8/6buyU0egzaQfBE1yQ3NZ4D/c2252f6a3fd2157dca087f02d8b8c5e9/Deliverability_1_-_Version_6.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
3 min
Terra Mail is about to close: All you need to know
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![Gods in front of laptop screen and plant with megaphone and x sign](https://images.ctfassets.net/y6oq7udscnj8/1RbEA0yGAFxbQOR75yucEu/14c96d2ad935b367ca7d82e089f3e2f7/Email_Marketing_3_-_Version_3.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
5 min
Orange email is closing: Here’s all you need to know
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![god and goddess holding a christmas tree](https://images.ctfassets.net/y6oq7udscnj8/6grzpLABlyN7J00v8qffOb/516e0718a53fd6b891941337fc8836d8/Holiday_Season_2_-_Version_4.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
1 min
Infographic: The journey of your emails this Christmas
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![Hermes on Santa's sleigh](https://images.ctfassets.net/y6oq7udscnj8/6SVbSV9sL6k91gP3EteLAV/3c0cc97c0423f45761fda584cd8e43e6/Holiday_Season_1_-_Version_7.png?w=2048&h=960&q=50&fm=png)
Deliverability
6 min
The journey of your emails this Christmas
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![Hermes and Hera in front of the mailboxes](https://images.ctfassets.net/y6oq7udscnj8/pGTnj9u8qWLFWAHOA3hl7/6e0c834b543b52b29bc91bd99c980334/-_Deliverability_1_-_Version_2.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
5 min
Opt-in is for life, not just for Christmas
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![Hermes with a mask thinking about security](https://images.ctfassets.net/y6oq7udscnj8/5q9F9Dh05fHxcoQ5V1E6gq/9ce1666a04a0bc79293c3764e013c506/Email_Deliverability_4_-_Version_7.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
4 min
Yahoo!’s security breach and what it means for your email sending
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![A thief steals some emails](https://images.ctfassets.net/y6oq7udscnj8/3eyDX8GmoRRQhRtcqvKbmw/0e3d2bbc4a594e4a13aeef56890c4c57/Email_Deliverability_4_-_Version_9.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
2 min
Quiz: What kind of spammer will you be this holiday season?
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![Hermes riding Santa's sleigh in front of presents](https://images.ctfassets.net/y6oq7udscnj8/2JifpbnIiTS8Iukrb9n8Xl/e048c308602c44182216d16dc7c52df0/Holiday_Season_1_-_Version_1.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
5 min
Improve your email deliverability: The secrets to send your holiday emails straight to the inbox
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![Hermes delivering a letter to Hera](https://images.ctfassets.net/y6oq7udscnj8/4aFUagamycuaDlY9goGSeu/a3f353384ca27271c93855a6bbd7e6c1/Deliverability_1_-_Version_5.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
2 min
Get ready for easier unsubscribe on iOS 10
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![Hermes bracing himself](https://images.ctfassets.net/y6oq7udscnj8/17MJuBoUv4Rmgc9WfBzpBI/50d440d96bba2f643856c1880e446d34/Deliverability_5_-_Version_2.jpg?w=2048&h=960&fl=progressive&q=50&fm=jpg)
Deliverability
3 min
Using Gmail for email marketing: Not such a good idea
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