Why aren't my emails being sent?
It is possible to send an unlimited number of emails from all plans of systeme.io.
However, some checks are made to ensure optimal deliverability of all emails.
As a result, if you attempt to send an email using systeme.io and it does not go out (pending), resending it multiple times is unnecessary.
Three main situations can explain this pause:
1. New user email verification
To protect the overall deliverability of our platform, we take precautions with recent accounts. Here is how it works in detail:
- We first send the first email to 100 contacts, which amounts to 100 emails.
- After these 100 emails, sending is temporarily interrupted to analyze the initial statistics.
- This verification can last from a few minutes to six hours, depending on the volume of emails to process.
Depending on the results:
- Unsatisfactory results → the user is moved to the quarantine group.
- Satisfactory results → the next 100 emails are sent, and the verification repeats after each batch of 100 emails until reaching 500 emails.
Then:
- If the account is over 16 days old and 500 emails have been sent, the user is classified in a high, medium, or low risk group, depending on their statistics.
You can click here to better understand how systeme.io manages the thresholds of the different groups.
2. Temporary suspension after importing a contact list
When a user imports a contact list, sending their emails may be temporarily paused. This measure helps preserve deliverability and prevent potential issues related to the quality of the list.
a. Contact list verification
To ensure a healthy base, we check the following:
- List origin: how and where the contacts were obtained.
- Email condition: quality of the addresses present in the list.
- Domain condition: analysis of the domain used for sending to detect any potential issues.
b. Importance of list quality
A massive transfer of contacts from another autoresponder can harm deliverability. By validating the list, we allow the user to start on systeme.io with a healthy foundation, thus minimizing the risks of blocking or spam.
c. Prohibition of non-compliant lists
Purchased contact lists, lists collected from the internet, or obtained without explicit consent are strictly prohibited. This rule protects the reputation of our platform and ensures the best possible experience for all users.
These verifications allow each user to benefit from efficient and secure email sending, thus maximizing the deliverability and impact of the campaigns.
3. Use of suspicious words
If an email contains words or expressions that may be considered spam, our system may put the sending on hold.
Our team then checks the content:
- If the email is deemed reliable → sending reactivated.
- Otherwise → email blocked and user informed of the reasons for the block.
4. High volume of sends
When a user sends a large number of newsletters, the system may temporarily pause the sending.
- An automatic verification is then launched to guarantee deliverability and detect any potential issues.
- This verification is fast and lasts only a few minutes.
- Once validated, sending resumes normally without any additional action from the user.

If none of these situations apply to your case, you can contact systeme.io support. Our team is ready to analyze your problem and assist you to ensure the best possible deliverability.