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General questions

Do you have a merge function? Can we personalize emails ?

You can absolutely personalize emails using your contact list properties!

I received an alert for an unknown sender detection: what should I do?

If you received an alert for a new sender address that you do not own, please check if there are scripts somewhere on one of your websites that are configured to send an email when someone fills in a form or signs-up for a newsletter. Check if the script is using the intended recipient address as the “From:” address. Make sure that the sender (From) matches with your own address.

I received an alert for a new sender detection: what's that?

When using a third party emailing service like Mailjet, you want to be able to appear as actually being the sender. This is why you need to provide some information about the “sender”. If the email contains an activation link, simply click on it. Otherwise, you don't need to do anything.

What's the meaning of DKIM?

The acronym DKIM stands for “Domain Keys Identified Mail”. It is an encryption authentication method that is used by many ISPs to establish if the email originated from an authorized system and prevents spammers from stealing the identity of legitimate entities.

What's the meaning of SPF (Sender Policy Framework)?

Haven’t we all received emails that seem to be from our bank, our credit card company or even from ourselves but they were fake emails? The way emails are structured, spammers can and often do falsify the ‘from email address’ to send these types of spoof / spam emails. This is where SPF comes into place!

What is a transactional email?

Transactional emails are sent to one person as a result of an action triggered by the user. These are automated notifications such as welcome emails, shipping notices, order confirmations, password reminders, purchase receipts, etc. These emails are so important and give users peace of mind in knowing that their transactions have been processed properly.

Can I purchase a B2B contact list? Is it legal?

Purchasing a B2B contact list, or directory, is legal and in some areas it may also be legal to send unsolicited email. However Mailjet does not allow the use of these lists and sending unsolicited emails is against our Anti-Spam Policy and our Terms of Use.

How can I be informed of new features & news about Mailjet?

Follow us on social networks or subscribe to our newsletter!

Can I use Mailjet to send bulk emails or newsletters?

Yes, you can absolutely use Mailjet to send bulk emails and newsletters! Our powerful online newsletter tool allows you to create and send your newsletters in a matter of minutes. Our APIs allow you to integrate some of Mailjet’s services into your own product. Enjoy the benefits of our real-time statistical tracking to show who opened your newsletters, which links were clicked and so on. Whether you are a newcomer to email marketing or a seasoned expert mailer, Mailjet has all the tools needed to optimize the impact of your communication.

What do these statuses mean: Sent, Opened, Clicked, Blocked & Bounced ?

It is important to know the meaning of email statuses in order to interpret your statistics properly and to help you boost your deliverability!

Do you have an affiliate or referral program?

Yes, we have a generous Affiliation Program (also called a “Reseller Program”).

What is your spam policy?

Our Sending Policy clearly explains that spam is not tolerated at Mailjet. Actually we hate spam as it affects deliverability and reputations.

Where is Mailjet available? In which languages?

We are in the cloud, so Mailjet can be used anywhere in the world! Our products and customer services are available in English, French, Spanish and German but our email includes every type of character in any language.

What is Mailjet and why should I use it?

Mailjet is a cloud-based service allows you to send your transactional messages as well as your marketing campaigns. Create your account in a few clicks and send your first messages in minutes!

Which character encoding is preferred for Mailjet?

We support most charset encodings. However, using UTF-8 in your emails is recommended for better compatibility.

Am I limited to one email sending address?

You can add an unlimited number of sending addresses from different domains.

You also have the option of adding and validating an entire domain. This option is only recommended if you have many sender addresses to add from one domain and you want to save time by not manually validating each one.

How will Mailjet use my account data?

Your contact lists and personal data are confidential. Mailjet will never disclose it to third parties.

How does Mailjet improve the deliverability of the emails?

Mailjet constantly look for different ways to optimize and improve the deliverability of your emails. We manage your reputation as a sender and puts authentication tools at your disposal (SPF, DKIM, etc.). We optimize your sending frequencies (throttling) and your HTML code (thanks to the Newsletter Tool). On top of that, the feedback loops and the statistics allow you to optimize deliverability from one sending to the other.

How can I contact Mailjet's team?

There are different ways to contact us! You can simply go to our Contact Us page and tell us your request or you can use our dedicated form Support tab.

Do not hesitate also to use our social media channels. We are on Twitter, Facebook and we also have a blog. You can expect a prompt answer from our team!

"Bulk", "marketing", "transactional", etc. What's the difference between the types of emails?

Bulk emails are "one-to-many" emails while transactional emails are sent on a "one-to-one" basis. The typical "bulk email" is a newsletter as the typical "transactional email" is an invoice or simply a sign up confirmation.

What is the size limit for attachments files sent via Mailjet?

File attachments is not possible when sending messages via our online newsletter tool. You must use the SMTP relay to send attachments. To learn more about using attachments, please go to: How can I add an attachment to a campaign.

You still can not find the answer to your question?
Do not hesitate to contact our support team or search for other topics!

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