You can define how many emails Mailster sends in a certain period so you can respect your provider’s limits.

Depending on your server setting Mailster can send approx 1-2 emails per second. Some of our customers are able to send 12 mails per second – which are approx 43.000 within one hour!

Usually approx. 2-3 emails per second are considered average and if your list is below 5.000 subscribers you’re all good.

Please contact your delivery provider on how many emails you can send in a certain timeframe.

With Mailster you can also try to send your campaigns as fast as possible.

Do not send too many emails at once!

Sending more than 200 at once can cause server timeouts! You should decrease the cron interval!

Sending limits from different providers

Here’s a list of providers you can use the get your limits.

ProviderLimitationsYour settingsConfiguration
1and1-6 per minute
servers
-3500 per hour in the Unlimited Pro
30 emails / 5 minutesSMTP ports are blocked with this host. Use PHPMail instead.
BlueHost150 per hour70 emails / 30 minutesSome plans have SMTP blocked and there’s no way to unblock them
DomainFactory (df.eu)500 per hour with Sendmail

1000 per session with SMTP

115 emails / 15 minutes

 

250 emails / 15 minutes

 
DreamHost100 per hour25 emails / 15 minutes 

More info

SMTP Hostname: mail.your-domain
From: Needs to be a ‘DreamHost-hosted’ e-mail account
E-mail Address: Enter your e-mail address.
User Name: Enter your e-mail address, again.
Password: Enter the password you set up for your e-mail account.
Secure connection: No
Authentication: Yes
Ports: 25 or 587
Free.fr20 per task
100 per hour
2000 per week
18 emails / 15 minutesthe “from” email address needs to be [email protected].
If you’re using your own cron or the manual send process, you can send 15 emails every 10 minutes.
FrogHost.com1000 emails per hour490 emails / 30 minutes 
Gmail500 per day20 emails / 1 hour 
Google Apps100 per hour
500 per day
48 emails / 30 minutes
20 emails / 1 hour (if you have more than 500 subscribers)
 
GoDaddy250 per day on regular hosting

 

1000 on dedicated/virtual servers

5 emails / 30 minutes

 

40 emails / 1 hour (if you have more than 1000 subscribers)

For GoDaddy’s own SMTP:
Server: relay-hosting.secureserver.net
Port: 25
Secure method: No
Authentication: No

Your from and reply-to email should belong to your own domain.

Goneo250 per hour60 emails / 15 minutesMethod: php Mail Function
Your from, reply-to, and bounce-back email addresses should belong to your own domain.

Do not leave the bounce email field empty!

GreenGeeks100 per hour by default45 emails / 30 minutes 
hawkhost.com2000 emails per hour  
Hivetec80 per hour20 emails / 15 minutes 
Host Gator500 per hour115 emails / 15 minutesNote: Does not support third-party SMTP, except for Amazon SES and SendGrid. List over 5000 emails aren’t allowed

unless you use Amazon SES or SendGrid.

Hostinger200/hour via Webmail, 500/hour using SMTP depending on your plan  
Host Monster500 per hour115 emails / 15 minutesNote: Does not support third-party SMTP, except for Amazon SES and SendGrid.
Hosting 2GO50 per 15 minutes45 emails / 15 minutes 
Hotmail100 per dayDue to this limitation, you should not use Hotmail as SMTP server. 
Infomaniak20 / 15 minutes20 / 15 minutesAutomatic bounce handling for Premium users: Infomaniak forces its own bounce address, so we recommend using a third-party email provider.
InMotion250 emails per hour20 / 5 minutes 
JustHost150 per hour70 emails / 30 minutes 
Laughing SquidUnknown. They prefer not to send any newsletters from their servers.  
Lunarpages20 per minute
600 per hour
19 emails / 15 minutesYou can use your own cron task to have a better frequency (every 2 minutes)
Media Temple50 per minute
500 per hour
max 1000 per day
115 emails / 15 minutesYou can use your own cron task to have a better frequency (every 2 minutes)
More info
NameCheapStellar – 50/hour
Stellar Plus – 200/hour
Stellar Business – 10000/hour
  
Netfirms200 per hour
2000 per day
  
Netissime500 per 15 minutes
1000 per day
100 emails / 15 minutes
40 emails / 1 hour (if you have more than 1000 subscribers)
 
one.comNo official limits.Don’t go overboard nonetheless.Make sure your FROM address is from your own domain name.

If you send with their SMTP:

1. Hostname: mailout.one.com
2. Login should be the complete email address
3. Leave the password field blank.
4. Port: 25
5. Secure Connection and Authentication should be set to “No”.

OVH via SMTPPack Perso: 500 per day
Pack Pro: 500 per day
Pack Business: 1200 per day
Pack Premium: 2000 per day
20 emails / 1 hour
20 emails / 1 hour
48 emails / 1 hour
80 emails / 1 hour
Max per hour: 100
Method: SMTP
Server: ns0.ovh.net
Port: 465
Secure method: SSL
Authentication: Yes
Your username/password
OVH via the websiteYou will be blocked if more than 5% of your messages bounceNo more than 150 emails per batchMethod: php Mail function
If you’re sending from OVH’s shared hosting solution, you won’t be able to specify your own bounce address. A dynamic address is enforced by OVH. This means that you’ll never be able to fully validate your SPF and have a worse reputation for ISPs(Gmail, Yahoo etc…)
PHPNet100 per hour50 emails and 2-second pauses between each batch with the manual send processE-mails are added to their own queue so you can send as many emails as you want and then their server will deliver automatically 100 emails per hour
PlanetHoster200 per hour90 emails / 30 minutes 
Rochen100 per 10 minutes
1000 per day
95 emails / 15 minutes
40 emails / 1 hour (if you have more than 1000 subscribers)
 
ServerMX.comPackages MX1 – MX2 – MX5
1 minute => 120 emails
1 hour => 300 emails
1 day => 400 emails
1 week => 1000 emails
Packages MX10 – MX20 – MX50
1 minute => 120 emails
1 hour => 700 emails
1 day => 1000 emails
1 week => 5000 emails
 More info
Siteground400 per hour95 emails / 15 minutesList of Ports
Site5500 per hour41 emails / 5 minutesfor SMTP connections
Synthesis1000 per hour250 emails / 15 minutesPHP Mail
Techark250 per hour60 emails / 15 minutes 
VPS.net200 per hour90 emails / 30 minutes 
Webcity20 per 6 minutes19 emails / 15 minutesYou can use your own cron task to have a better frequency (every 8 minutes)
Westhost1000 per hour225 emails / 15 minutes 
wpwebhost.com200 per hour95 emails / 30 minutes 
Vexxhost250 per hour for shared hosting
500/hour for semi-dedicated
60 emails / 15 minutes
120 emails / 15 minutes
 
Yahoo100 per hour
Max 500
95 emails / 1 hour 
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